Mining and Scientific Press.

July 3, 1897.

Mining and Scientific Press.

e;st/*bi-isi-ie;d isoo.

Oltlest Afluing; Journal on the Americnii Continent.

opce. No. .wo Market Street, San Francisco, Cat.

ANNUAL SUBSCRIPTION:

Uolied states, Mexico and Canada ta 00

All Other Countries in the Postal Union 4 00

Entered at the S. P. Postoffice as second-eiass mail matter.

J. F. HA1.I.ORAN General >Ianager

TO THE PUBLIC.

No one /.« authorized to solicit biisiness for this paper v.nhss in possession of proper creiientiais and regularly numbered and stampied blank subscription receipts.

San Francisco, July 3, 1897.

TABLE OF CONTENTS.

[LLiUSTRATIONS.— The Riverside Transmission Plant— View of Country Tbroutjh Which Line Passes; Method of Line Transposi- tion: The Substation Showiof? Lightning Arresters, High Poten- tial Switchboard, Transformers and the Distributijg .Switch- board; Potential Regulators in Substation, 1.

EDITORIAL.— African Gold Yield, 1. Our New OQice; The Mini's Error as to the Gold Yield; Will the Assessment CUruse Hold ? 3.

MINING SUMMARY. — From the Various Counties, of California Nevada and Other Pacific Coast States and Territoiies, 6-7.

ELECTRICAL PROGRESS.— The Riverside Transmission Plant; Drilling by Electricity; Illegal Practice of Medicine; Sodium- Gold Alloys with the X-Rays, 8.

SCIENTIFIC PROGRESS.— Liquefying Fluorine Gas; An Ergom- eter; Tin in Canned Goods ; An Al loy of Silver and Zinc, 8.

MECHANICAL PROGRESS.— The Largest Swing Bridge; Use for Scrap Mica; Nail Production iu 1890; Weighing Sky Scrapers, 9.

THE MARKETS.— Eastern and Local Markets; Mining Share Market; Sales in San Francisco Stock Board; Notices of Assess- ments, etc., :^^-■^.■i.

MISCELLANEOUS.— Concentrates, 3. Assaying of Gold and Sil ver; Lead Poisoning; The Waterloo Mining Case, 4. West Aus- tralian Gold Miuing; Destiny of Mining Investment; Side Lines Adjoining Agricultural Patents; German Deep Mining, 5. Index to Last Volume, 10-11. Coast Industrial Notes; Personal; Re- cent California Mining Incorporations; Recent Publications Re- ceived; Recently Declared Mining Dividends; Commercial Para- graphs, 13. List of U. S. Patents for Pacific Coast Inventors; No- tices of Recent Patents. 18.

The Mint's Error as to the Qold Yield.

The Director of the United States Mint about a month ago gave out some figures, semi-offioially, as to the product of gold in this country in 1896. The figures for California were without doubt incorrect, and will be changed when the official report is pub- lished ; but in the meantime a great deal of harm is being done to California. The returns of the United States Mint for California, as sent in by the statis- tician to Washington, show a yield of gold for 1896 of $17,181,562.70; yet the semi-official announcement referred to gave the output of California in gold as $15,235,800, which is about one hundred thousand dollars less than the amount returned by the same authority for 1895.

These figures have been given great publicity, and it will remain in the minds of many that the figures last given are the correct returns for the bullion product of California; and it will show on the face of it a decrease in the yield. In this respect a great injury has been done that cannot be repaired. The worst of it is that these figures when given out, being in the way of fresh news, have been given a much wider circulation by the press than will be any later statements from the mint, or any corrections made by others. Newspapers published in other gold pro- ducing districts have been vigorously calling atten- tion to the fact that the California gold yield is not increasing and that this State will soon lose prestige as the Golden State.

It would seem to those who are at all familiar with mining in California hardly necessary to say that the figures published by the mint director were wrong, for it is patent that the output of gold was increasing, not only by the reopening of old naines or new mines in old districts, but that there was a large increase from new districts, and in no part of the State has there been any considerable falling off or important closing down of mines, with the single exception of Calaveras county, where a fire closed the largest mine in the State for several months. As a result, the output of Calaveras county was considerably lower for 1896 than for 1895.

In Kern county a large increase was expected and returns show it to have amounted to about $350,000. So, too, with the opening up of mines in San Diego county; a large increase was expected. In the old districts of Nevada, Tuolumne, Mariposa, Trinity, Amador, Siskiyou and El Dorado counties there was increased activity, and there was a greater number of stamps falling and a larger output of ore, and it was expected that the returns would show a larce

increase in the bullion yield. It is from these coun- ties that the increase comes.

Year by year the means of obtaining accurate in- formation from the mines are increasing. If the Director of the United States Mint cannot take for his authority his own statistician and the State Min- ing Bureau, where could he get data that would be at all reliable from any other source ? No authori- ties except the United States Mint and the State Mining Bureau gather these statistics. If these are not correct, or approximately so, there certainly are no other sources worth consideration.

Will the Assessment Clause Mold ?

Considerable opposition is manifested toward that clause in the new law of California as to mining locations which requires that $50 worth of work must be done within sixty days after the date of discovery. Opposition has been manifested in Utah to a similar clause in the new law there, and an attempt will shortly be made to have this declared to be in conflict with the statute of the Federal Government, which refers to the amount of assess- ment work it is necessary to do to hold title. Strange as it may seem, although similar provisions have been incorporated in State and Territorial laws for years, the question as to whether they are in conflict with the Federal statute does not seem ever to have been brought up in a court for deter- mination, except in the Supreme Court of this State in 1882, and then in reference to the older Federal statutes.

This was the case of the Original Company vs. the Winthrop Mining Company (60 Cal., p. 631). The local rules of the district required that work should be done every sixty days on the claim, while the old law of Congress required that $10 worth of work should be done each year for each 100 feet along the vein.

The attorneys for the appellant stated that " the Court below held that there is no conflict between these acts of Congress and the local rules and regu- lations then in force in the district where the mine is located. But these provisions plainly- appear to us irreconcilable. That the acts of Congress are the paramount law is too plain for argument. Under the acts of Congress above cited appellants had until the first day of January, 1875, in which to make the first annual expenditure."

Attorneys for the respondent held that "under the acts of Congress of May 10, 1872, a compliance with the local laws and rules of the mining district are required. Under this provision the local law cannot contradict, but may add to the act of Con- gress in all matters not inconsistent with the act."

The Court in its opinion says: "We think that the Court erred in charging the jury that a locator of a mining claim must not only observe the law of Congress which requires that ' ten dollars worth of labor shall be performed or improvements made each year for each one hundred feet in length along the vein until a patent shall have been issued therefor,' but also the local regulations of the miners of the district, which require ' that work shall be done every sixty days on the claim.'

"According to the law of Congress, a locator would forfeit, his claim if he did not each year per- form work or make improvements of the value of ten dollars for each hundred feet of the vein. By the local regulations, he would forfeit it if he did not perform some work on it every sixty days. It seems to us that there is a clear conflict between the law and the regulations. And if there is, it is conceded that the law must prevail."

So it would appear that if this question should come before the Supreme Court of California again, unless it reversed this former ruling, the clause re- quiring fifty dollars worth of work to be done in sixty days after discovery would be declared to con- flict with the Federal Statutes, and, as they are paramount, would have to give way.

However, the question will have to be finally de- cided, to att'ect the different States and Territories interested, by the Federal Courts. The United States Supreme Court has only inferentially recog- nized the right of local districts or State legislatures to make provisions for work on locations in addition

to that required by the act of Congress. In the case of Erhardt vs. Boaro (113 U. S. Reports, p. 527) it would appear from the decision that the Supreme Court was inclined to admit the right of States or districts to require extra work.

Justice Field, who rendered the decision, says: "The statute of Colorado requires that the dis- coverer, before a certificate of location is filed for record, shall, in addition to posting the notice at the point of discovery, sink a shaft upon the lode to the depth of at least ten feet from the lowest part. Be- fore this work could be done by the plaintiff the ground claimed was taken possession of by the de- fendants, the stake at the point of discovery, upon which the notice was posted, was removed, and Car- roll was thereby and by threats of violence pre- vented from re-entering upon the premises and com- pleting the work required to perfect the loca- tion. » * * *

"In all legislation, whether of Congress or of State or Territory, and by all mining regulations and rules, discovery and appropriation are recog- nized as the sources of title to mining claims, and development, by working, as the condition of continued ownership, until a patent is obtained. And whenever preliminary work is required to define and describe the claim located, the first discoverer must be pro- tected in the possession of the claim until sufficient excavations and development can be made, so as to disclose whether a vein or deposit of such richness exists as to justify work to extract the metal." * * * " And the laws of the United States do not prescribe any time in which the excavations neces- sary to enable the locator to prepare and record a certificate shall be made. That is left to the legis- lature, which, as we have stated, prescribes sixty days for the excavations upon the vein from the date, of discovery, and thirty days after for the prep- aration of the certificate and filing it for record. In the judgment of the Legislature of that State this was reasonable time." * * * " A mere posting of a notice on a ridge of rocks cropping out of the earth, or on other ground, that the poster has located thereon a mining claim, without any discov- ery or knowledge on his part of the existence of metal therein, or in its immediate vicinity, would be justly treated as a mere speculative proceeding, and would not in itself initiate any right."

Our New Office.

Nearly twenty years ago the Mining and Scien- tific Press outgrew its rooms, corner California and Sansome, and with its allied interests took the entire upper part of the block bounded by Front and Market streets. It has now outgrown the building it so long occupied, and this issue appears from our new offices, 330 Market street. We have leased for a term of years what we consider the best part of the handsome modern building just com- pleted at the intersection of Battery, Bush and Market streets, No. 330 Market, an illustration of which appears above. The building is up-to-date in every particular, was built by the Clark estate, under the supervision of Mr. Edw. Swain, who was the architect, and that part of it occupied by the Mining and Scientific Press was built specially for the use of this paper. It is intended that, as in the past, this office shall be headquarters for mining information, and mining men resident or visiting the city are invited at any time to make use of its facilities.

July 3, 1897.

Mining and Scientific Press.

Concentrates.

A LBiiGE of onyx was discovered last week near Vollmer, Idaho.

The plan to build a smelter at Vaaeouver, B. C, has falleD through.

Tub gold yield of Victoria, Australia, during May amouoted to titi,0O4 ounces.

The Le Rol mine at Rossland, R. C. has increased its ship- oients to IHO tons a day.

The Banner Mining Co. in the PloreDce district, Idaho, are to erect a lU-stamp mill.

Platinum to the value of about 117,000 was produced in New South Wales during isyti.

TuEKE are about lOU men in the revived Meadow Lake district in Nevada Co., Cal.

SfoKANE people have bonded the Queen Esther mine at Cheney, Wash., for ri5,000.

Lank Citv Is a new mining town established at the Chain- man mines, near Kly, Nevada.

Mi.Ni.N'o [•Koi'EKTiE.s all over the coast are being opened up, in most cases, by their owners.

Tub Anaconda Copper Mining Company of Montana turns out about 5000 tons of ore daily.

Ka.steun people liave begun negotiations for copper property on Mlchal creek in Washington.

A coi'i-BK strike has been made in the Amazon di.strict near basin, Montana, in the Scioto mine.

A KECENT cleanup at the Cariboo hydraulic mine, in British Columbia, yielded gold valued at $71,414.

The monthly pjyroU of the Mouutain Copper Ojmpiny at Keswick, Shasta county, Cal., is about $40,000.

Tub Comet, a prospect at Cold Creek, Nevada, his been bonded by T. A. Bennett and others for |22,000.

E. C. MiTcuE[,i, is about to erect a tO-stamp mill at the South Fork mine, at Craniteville, Nevada Co., Cal.

Tub steamship City of Topeka is djwD from Alaska with 170,000 in bullion from the Alaska-Tread *velt Mining Co.

Tub Minnehaha mine, in the Randsburg, Cal., district, has been bonded by .1. W. Rogers and R N. Hubbell for*l5,000.

TuEHE was exported frum New York, in the week ending Aprils, to Europe 1,840,000 ounces of silver valued at *l,140,- 800.

Tb£ tailings at the old mill at the Cbainman mine, in White Fine district, Nevada, are to be worked by the cyanide pro- cess.

FuuH I'UMi'S have been manufactured and will ba set up im- mediately at Leadville to drain the down-town mining dis- trict.

TuE Boston & Montana Consolidated Copper and Silver Mining Company's mines in Montana produce about 1200 tons a day.

It is reported that placers have been found two miles north of Randsburg, Cal., which are as rich as those at Goler.

The Montana Smelting and Refining Company is going ahead with the erection of its plant at Twin Bridges, Montana.

It is estimated that there have been 15,000 mining locations recorded in Josephine county, Oregon, since the first one was made in 1803.

Negotiations are on foot in London to transfer the Golden Cache free milling gold mines in the Litlooet district, B. C, for $3,000,000.

The statement of the Parrott Company at Butte, Montana, shows net profits for the year 1800 of $412,377.00 from their copper properties.

HvDKAiLic woKJc has begun at Gold Creek, Nev., under the direction of C. H. Cook. The Empire mine there has been bonded for $35,000.

A NEW discovery of coal deposits, said to be of good quality and extensive, has been made in the western part of Box Elder county, Utah.

The Exchange group of mines on Springer creek in the Slocan district, B. C, has been bonded by Sir Chas Tupper of Ottawa for $42,000.

The mill at the Fortuoa mine in Arizona, with twenty stamps weighing 1350 pounds each, crushes eighty tons daily, or four tons per stamp.

The Anglo-Mexican reports that the output for the month of May amounts to: Bullion, $81,700; concentrates, $1300; 1780 tons, 29 days' run.

AocoKDiNG to the Spokane Sijiil[csman-Rcvien\ the owners of Reco mine of the Slocan, B C, have sixteen cars of ore in transit which will average $3500 a car.

F. Aug. Heinze's application to the Canadian Government for a subsidy of $8000 a mile on a railroad from the Columbia river to Pendleton will stand over for a year.

The mineral export of Tasmania for May was valued at £73, 171, and dividends were declared amounting to ,tl3,485, and a total for the first five months of 1897 of £55,940.

For the convenience of our readers, the index to the con- tents of the six months' issue of this paper, from January to June, 1897, inclusive, appears on pages 10 and U of this issue.

Large powers have been granted to the Yukon Chartered Company of England to explore in what is known as the Cas- siar concession, and the advance party has started for the fields.

In the hanging wall of the Daisy mine at Mercur, Utah, there is about 18 inches of a fine quality of fireclay, some of which is being used in the assay offices to manufacture crucibles.

The Grand Central of Mexico reports for May: Thirty stamps ran 28 days, crushing 4500 tons; bullion shipped, £7000; concentrates estimated to be £3800; expenses, £0000; profit, £4800.

Up to May 22 the dividends declared by South African mines this year amounted to £358,939 on a total capital of £1,379,594, or over 20 p3r cent. However, this came from only thirteen mines.

The Little Sunflower reservoir at Gjld Creek, Nevada, contains about 300 million gallons of water and hydraulickiog has been commenced. When filled the reservoir will hold 820 million gallons.

In the Senate last Tuesday by a vote of thirty to twenty- three the^committee tariff rates of 1^ cents per pound on lead

in ore was agreed to. The duty on pig lead is increased from 2 to 2'^ cents per pound.

TiiE exports of ore from the Kooteaays for the week ending June 19 was 1,145 tons; the total so far for 1897 is 30.98t» tons. The value of the output of ore and bullion and matte up to that date is given at f3,:i:t<i,723.

Ol'kiN)! the last two years nearly 100 new papers have been started up, and in some cases old papers hav^e been revived. Of the latter, the most notable is the resuscitation of the Ttnit»'lii-cieu' at Tuscarora, Nev.

The gold output of the Indian mines for May was 32,099 ounces, an increase of 074 ounces as compared with the pre- ceding month, and an increase of 5250 ounces as compared with the corresponding month of 1890.

A NBv\ strike has been made in the Stonewall mine near Julian, San Diego county, opened and worked by the late CJovoruor Waterman. Tne mine has been idle for a number of years since the ore bodies pinched out.

Last week's ore shipments from Rossland, B. C, were: Le Roi, 900 tons; War Eagle, 250; Iron Mask, 80; Columbia and Kootenay, 200; Josie, 95; Cliff, 40. Total, 1455 tons. The I. X. L. milled In the O. Iv. mill 105 tons.

The oil producers at Los Angeles have been holding oil up to II a barrel, but now the increased production, it is claimed, will increase the reserves largely or force down the price. The local demand takes 2000 barrels daily.

The Mount Lyell mine of Tasmania reports for the last half year having worked 34,009 tons of ore and produced 1283 tons of copper maile valued at t:84,853. When the additional works are completed, it is expected to treat 500 tons daily.

An effort is to be made in London to raise funds to build a railroad between Bute inlet, near the north cjast of British CoKirabla, to the village of Quesnelle, Cariboo, a distance of 230 miles. It would be of value to a rich gravel mining country.

The cost of shipping nine tons of mining miterial from San Francisco to the Rand, Soutli Africa, lately was about $1000, the Cape charges being eight times as great and the Nether- lands railroad, twenty-seven times as great as the American per mile.

Tue export of gold from British Guiana from January 1 to May 24, this year, has amounted to $73(5,522, as against i?005,- 800 for the corresponding period of ISOiJ. The weekly yield, however, would indicate an output for the year much larger than last.

In Meadow Lake district, Nevada county, Cal., nearly all the mines are bonded to the syndicate which is building the road for transporting the rebellious ores. Although nearly all the known ledges have been taken up miny prospactors are going in.

The Alaska-Mexican reports for May as follows: Period since last return, 31 days; bullion shipment, $33,330; ore milled, 14,369 tons; sulphurets treated, 239 tons; of bullion there came from sulphurets $9593; working expenses for period, $17,901.

The Salt Lake Trihanc is unearthing and exposing a number of raining swindles being perpetrated in the East with worth- less Utah mines. The old game of giving names similar to well known mines, or locating their wildcats near big proper- ties is the most common in use.

The Superior Court of Butte Co., Cal., has refused to grant Goodall, Perkins and others an injunction restraining the Golden Feather Co. from making use of the dams and flumes for turning the waters of the Feather river at Morris ravine. The case will now go on to trial.

The De Lamar of Idaho reports for May : Crushed during the month, 4060 tons; bullion produced in the mill, $44,080; estimated value of ore shipped to smelters, $400; miscella- neous revenue, $155; total produce, $45,235; total expenses, $34,430; profit for the month, $10,805.

Negotiations are pending for the transfer to the Scottish Colonial Gold Fields, Limited, of Edinburgh of the properties of the Adams Mining Co., the Cumberland Mining Co., the Slocan Mill Co., the Slocan Tramway Co. and the Idaho mines in British Columbia for about $400,000.

The Arizona Legislature at its last session passed a bill ex- empting from taxation for five years new railroids. As one result it is proposed to build a road from Kingman or Hancock into the White Hills in Mohave county. This would enable a number of low-grade gold mines to be worked.

In the Gregory-Bobtail mine in Gilpin county. Col., a strike of rich ore has been made by the Gold Coin Compiny, which holds it under a band and lease. This mine was discovered in 1859 and has been worked ever since and has produced several millions, although of late but little his been taken out.

The output of copper in the United States for the first five months of 1897 has amounted to about 90,000 tons and is an increase of a little more than 3000 tons over that of the cor- responding period of 1896. European demand has taken more than usual and the home consumption has remained about stationary.

The Bon Accord Placer Mining Company, operating near Bannack, Montana, have proved the feasibility of working gravel with a dredger last season, and now are about to erect a dredge having the capacity to handle 5000 to 0000 cubic yards of gravel every twenty-four hours, to work on Grass- hopper creek.

A mortgage for $250,000 bonds has been executed by the Arizona Onyx Company of New Jersey to the Continental Trust Company of New York, covering the Big Bug onyx mines in Maricopa county, Arizona, recently purchased by the mortgagors for $50,000, This step is to secure a large working capital.

The Alaska-Treadwetl reports for June 23,590 tons ore worked, averaging $2.84 per ton. There were also 372 tons sulphurets treated, of the value of $21,106. The total bullion product for the month was $07,043. The expenses were $28,981. In May the ore averaged $2 per ton, and the total bullion product was about $41,000.

At Brown's valley, Yuba county, Cil , 200O inches of water taken from the Yuba river by the irrigation district authori- ties have been leased for fifty years by the Dannebroge Min- ing Company, and they are now putting in an electric light and power plant to supply their 20-stamp mill and mine and other properties in the neighborhood.

The Montana {Drum Lummon) of Montana manager reports that the 50-stamp mill, which resumed operations on May 1, crushed during that month 3500 tons of ore, which contained

gold 1720 ounces, and silver 13,730 ounces, valued at $40,800. Working expenses on revenue account, $20,800; outlay on de- velopments, $5400; sundry, $300; total, *;«,500; estimated net result. $8300.

Ix the P'lU Mull Cazttif of London lately it was stated that *'a syndicate of British investors will within a few weeks purchase half a dozen gold mines in Cripple Creek, Col., and two lines of railroad connecting the mines with the nearest trunk roads, thus giving it control of the shipping facilities to the East. The railroads are the Colorado Midland and tlie Midland Terminal."

Twn MEs charged with kidnaping Captain WilUam Meikle, superintendent of the Niagara mine in Sierra county, Cal., last December, because he was employing Chinese, were last week fuuod guilty of false imprisonment and one sentenced to one year und the other to six months imprisonment in the county jail. Another defendant, who has been confined in jail for six months, was acquitted.

The Geldenhuis Estate, on the Rand, South Africa, which made a profit for the year ending March 31 of £70,123, reports that the 120-stamp mill crushed 189,598 tons of ore. The cost per Ion for the year, including development work and all ex- penses, was $4.39, against $4.40 for the previous year. The cost of cyaniding 127,000 tons was 70.3 cents per ton, against 83 cents per ton for the previous year.

Lately a shipment of ten tons of ore was made from the San Juan country in Colorado valued at 40 cents per pound, or about $800 a ton. In referring to this the Cripple Creek Miiil says that shipments of more than ten tons of even more valu- able ore have been made from the Doctor, Elkton, Smuggler, Victor, Portland, Independence, Pike's Peak, Garfield- Grouse, Moose and Eclipie mines of Cripple Creek.

Gold mines in Servia were largely worked in Roman times and in the middle ages, but during the long Turkish oppres- sion mining operations ceased. The richest source of gold known to the Romans was on the river Timok. Only alluvial deposits were then worked, but traces of systematic mining are visible, dating from the sixteen years of Austrian occupa- tion in the last century. Tbey are now being reopened.

The Lillooet, Fraser River and Cariboo Company reports for the Lanark mine in British Columbia for May: Concen- trator has been running continuously for twenty-five days, 3132 tons treated ; have shipped 430 tons of concentrates. Six days' delay caused by a breakage to the pumps and landslide. Estimated profit $;35 per ton (say, total net profits for month of May, $15,050. Estimated profit for the month of June, $20,- 000, can be increased to $30,000 subsequently.

FiFTV producing mines in April mide up thi total output of the Rand, South Africa. These crushed witi a total of 3413 stamps working on an average nearly twenty-eight days. Of these the 907 stamps at thirteen propsrties in the Associa- tion of Mines crushed on an average 4.73 tons per stamp per day. The thirty-seven mills in the Chamber of Mines with 2505 stamtjs crushed an average of 4.45 tons p^r stamp p3r diy. The twenty stamps in the Langlaate estate will made an average of 6.41 tons per stamp per day.

Deeds have been filed transferring some thirty claims owned in San Diego county, Cal., by the Golden Cross Mining and Milling Company, to a syndicate of Silt Lake and Cali- fornia capitalists, for a consideration named of $1,000,000. For some time, under the management of the receiver, W. W. Stewart, these mines have been paying a profit of some $30,- 000 a month. There are 150 stamps on the property, and it is stated by the management that a large cyanide plant will probably be erected soon to work the tailings.

Of the loss of copper by drainage from the Bingham, Utah, copper mine, the Bulletin of that place says; "One of the cop- per springs runs a little over one miner's inch of water, or about too pounds, per minute, carrying one-fourth of 1 per cent copper, and each minute four ounces of copper runs to waste from this one spring alone. In all probability the stream was running at the dawn of the Christian era— say, 1900 years ago— and by computation we find that during this period 268,- 831,000 pounds of the red metal have gone to waste— enough to make a belt for the world 8 inches broad by one-sixteenth thick, and have over 4,000,000 pounds left for buckles and ban- gles."

An Englishman writing from London to a correspondent says : " If any one had during the first days of the depression in Africans and Australians come over with good California properties, he could easily have placed them on a reasonable basis. But now I have changed my opinion as to where the property should be located, and have seriously changed my estimate of the California mine owners' aptitude for business. Thirsting for capital, they no sooner see it approach than they drive it away by asking several times more than they had in- tended. Get an option on a well-opened mine in Kootenay, with good reports, and you have something you can sell our friends. British capital is very much inclined to follow the British flag, and always will."

Hennen Jennings in his evidence before the mines com- mission in South Africa compared the cost of working the El Callao mine in Venezuela with those of Africa. At first it was worked by utterly inexperienced people, but later in its history there were thirty-one companies running 758 stamps. Now the lode is practically worked out, only ten stamps run- ning on the fields. The gross yield from the mine has amounted to £5,457,432, while the dividends have only amounted to £1,940,478, in spite of the great richness of the ore. This paucity of return must be attributed to the high costs, which during the first thirteen years were 149s 3d per ton, and have averaged 533 8d during the period of the lode— the lowest level being reached in 1891, when the figure was 39s 9d.

The Comstock Tunnel Company (Sutro tunnel) has failed to take action on the proposition submitted to it by the directors of the American Flat Development Company, and the claim owners all along the line of the proposed tunnel extension, from the Alta to the Rock Island, have generally declined to accept the terms proposed by the Development Company. On this subject the Katerprise, says : " Notwithstanding all this, the proposition has by no means been abandoned, and the di- rectors of the company are as enthusiastic of success as ever. They say the mines of the American Flat will be drained in the course of a few years. The plan of the tunnel extension from the Alta to Rock Island has not been abandoned, but other plans are now under consideration, one of which is a tunnel from the river at Dayton through Silver City into the American Fiat country, and still another is to run a tunnel from the Dayton mine at Silver City to the Rock Island shaft."

Mining and Scientific Press.

July 3, 1897.

Assaying of Gold and Silver.

- ■'By jkcoB B. ECKFELDT, Assayer of the United States Mint at pniladelpliia, Pa.

Assa.}/ of Gohl— Gold received at the mint for re- fining or coinage, either in the manufactured or na- tive condition, is of every variety of fineness, the alloy in a majority of cases being silver, with a smaller proportion of base metal.

In some cases of low-grade gold the alloy is largely composed of copper. The object of the assay is to ascertain these different proportions, both in order to base the calculations for value and for subsequent minting operations. For this purpose a small sam- ple is cut from each bar after melting. The fineness of this sample must, if the melting has been properly ■conducted, be the fineness of the gross amount.

The fineness of gold being expressed in thousandths (pure gold being 1000), it has been found expedient in assaying to employ the French system of weights, using the demigramme as a unit of 1000 parts with the decimal divisions to the ten-thousandth of that weight.

The demigramme is rather less than 8 grams. From the sample, after it has been laminated for convenience in chipping, there is accurately weighed 1 demigramme on the assay balance.

This assay balance is so constructed as to be of the utmost precision and delicacy, and so fine is the ad- justment that it is sensitive to the fiftieth of a milli- gramme.

To the gold, after being accurately weighed, there is added sufficient fine silver to make about twice (according to one system) or thrice (according to an- other method, now less used) the estimated amount of silver which may be contained in the alloy, ex- treme care being necessary that the amount of sil- ver added varies as little as possible from this pro- portion, as in any marked divergence the result would be liable to inaccuracy. Practice ena,bles an expert to judge of the fineness of gold within a few thousandths, thus securing the proper basis for the addition of silver. It is needless to say that the ad- ded silver is accurately weighed.

If the gold for assay is of low fineness, or contains a large amount of base metal, where it is impossible to estimate the quality, it is customary to make a preliminary or approximate assay as a basis or guide for a subsequent rigid assay.

The gold and silver, each having been weighed, are inclosed in a piece of lead foil about ten times the weight of the assay. A very little copper is ad- ded, merely to assist the cupellation. These are now ready for what may be termed the first part of the operation, that of removing the copper and other base metal. This is effected by the cupelling pro- cess.

The cupel is a small, shallow cup made from the ash of bones or the pith of animal horns. It pos- sesses the quality of absorbing the oxides of the metals, but not the metals themselves.

The bone or pith is first well burned in open air and thoroughly ground, after which it is moistened with water and pressed in a mold to the desired shape.

The assay furnace is oval in cross section, about 1 foot in height, made of fire brick. Extending across the furnace about the center is what is known as the " bridge " (that is also made of fire brick), and is de- signed to support the muffle. The muffle is the oven for the reception of the cupels. It is flat-bottomed, with an arched top, its length nearly corresponding to the depth of the furnace. The modern furnace is arranged for burning gas; the flame completely sur- rounding the mutfie subjects it to a high heat, easily controlled and regulated.

The front of the furnace has an arched opening corresponding to the muffle; through this opening the cupels are introduced by a long pair of spring tongs. When in operation the muffle is nearly closed by a door, allowing, however, the entrance of a reg- ulated current of air, which, passing over the assay, oxidizes the lead and base metals, their oxides being absorbed by the cupel.

At the back of the muffle is a slit or opening, which allows the exit of the unabsorbed fumes formed by the oxides of the metals, which are not absorbed by the cupel.

The furnace having been properly heated, the cupels are placed therein and brought to a uniform temperature of which the assayer must judge from experience. Each leaden bullet with its contents is then placed in its cupel, and the furnace closed. The lead in which the gold and silver has been inclosed is rapidly changed to a fluid vitreous oxide, which, ex- erting an oxidizing effect upon the base metals in the gold, causes their absorption into the pores of the cupel.

The lead likewise helps to form a more uniform al- loy of the gold and silver.

The precious metal is allowed to remain in the cupel until all agitation ceases; it then presents a bright surface, which indicates that the base metals have been oxidized and absorbed.

- The cupel is now allowed to cool gradually, and the button of pure gold and silver detached. The next step in the operation is the extraction of the

silver, which is effected by digesting the rolled-out button in nitric acid.

The object of the addition of fine silver previous to the cupellation is to make an alloy, in which the par- ticles of gold will be so far separated from each other that they may not protect any part of the silver from free action of the acid. A total extraction of the silver, both that which has been added and that which was originally in the alloy, is thus insured, within the limit hereafter described.

The button is hammered, annealed, and rolled to a thin strip, to furnish a larger surface for the action of the acid. This strip is loosely coiled into a small roll, technically termed a cornet.

The cornet is now ready for the process of sepa- rating the silver. If three parts of silver have been added in making up the assay, the action of the acid has to be conducted more slowly (to lessen the dan- ger of breaking the cornet) than when but two parts of silver have been used; consequently, a weaker acid is employed.

The cornet is introduced into a small vessel or flask, containing U fluid ounces of nitric acid at 22° of Baume's hydrometer; heat is then applied, either by a sand bath or gas jet, and the acid boiled for ten minutes.

The resulting solution, which contains nitrate of silver, is poured off, ahd three-fourths of an ounce of stronger acid, at 32° Baume, is substituted. This is boiled for ten minutes, after which the operation is again repeated with acid at 32°.

When the boiling or digestion is completed, it is presumed that the whole of the silver has been re- moved. The acid is accordingly poured off, and the cornet well washed with pure water. It is then de- posited in a small clay crucible, which is placed in the muffle, that the gold may be dried and annealed.

The cornet (which is now fine gold) is brought to the assay balance and its weight ascertained in thousandths of a demigramme. The number of thousandths which it weighs expresses the fineness of the original sample in thousandths.

If but two parts of silver have been used in pre- paring the assay, the cornet is introduced into the flask containing 1 ounce of nitric acid at 32° Baume's hydrometer. This acid is boiled for ten minutes, when it is poured oft' and replaced by another equal charge of acid of the same strength, in which the gold is again boiled the same length of time. After the second boiling has been completed, the cornet is washed, dried, annealed, and weighed, as in the pre- ceding case.

By subjecting another demigramme of the alloy to the cupellation process, without adding any silver, the base metal alone is removed. The loss gives the proportion of base metal, and, the fineness in gold being known, the amount of silver is ascertained by difference. It must equal 1000, less the sum of gold and base metal.

It is customary with every assay or set of assays to make one or more of pure gold, as a test assay or proof of the work, to detect any possible inaccuracy from overheating, too prolonged boiling, and partic- ularly to afford the necessary correction for "sur- charge," which will be explained at the close.

With every set of assays for the determination of base metal there is also a proof assay made. For this purpose gold of a standard fineness is used when the assays are of native gold, or in other cases when the proportion of alloy is not very large. A special proof, however, is made for every such assay. The proof, by calculation from the approximate assay, is so composed that when melted it will make an alloy similar to the sample for assay. Its exact propor- tion of base metal being thus known, any deviation from this proportion shown by cupellation becomes apparent. By this deviation the necessary correc- tion is made upon the result of the regular assay. In an assay of gold containing platinum, as in dentist plate, the amount of silver in the alloy cannot be ac- curately determined by the cupellation process, for the reason that the platinum, being a nonoxidizable metal, it is not absorbed by the cupel, but is re- turned in the button as precious metal. (To he Continued.)

Lead Poisoning.

Dr. Wegener of Clausthal has published in the German Quarterly Review of Public Health an im- portant memoir on lead poisoning. Lead miners are in no way liable to lead poisoning. The danger only occurs when the ores are smelted. It then re- sults entirely from the formation of lead dust and of volatile lead fumes. In order to obviate the danger it is, therefore, necessary to prevent lead fumes from being formed, or to conduct them away as rapidly as possible. It is satisfactory to note that much has been done of late years to improve the sanitary condition of lead works, the result being that there has been a notable decrease in lead poison- ing. This is well shown by the following statistics collected at the Tarnowitz Lead Works:

AU illnesses.

Yfttr. Workini'ii. Xo. Per urn men.

1888 6:4 .386 62.9

1889 616 249 4U4

1880 6-22 326 , 36.3

1891 686 152 23.9

1892 5T9 ISl 32.6

Leadpo	sotuiu/.
.Vo.	Fe	• 100 men
&>.		41.0
m		19.8
11)4		16.7
4K		7..T
36		6.2

The Waterloo Mining Case.

Written for tlie Mining and Scientific Press.

The Calico Mines of San Bernardino county, Cal., after various vicissitudes, passed mainly into the hands of two separate ownerships — on the one side by T. S. Doe of San Francisco, and on the other the Waterloo Mining Co. of Milwaukee.

When the claims of these separate ownership ad- joined arose a number of conflicting interests, which resulted in long and expensive litigation. The most important of these suits, so far as the miner is con- cerned, was the conflict between the Silver King mine, owned by the Waterloo Co., and the Oriental No. 2, owned by Mr. Doe. This suit had its incep- tion in a contract between the prior owners of the Oriental No. 2 ground and the prior owners of the Silver King mine, by which the Silver King owners were given the right of way to run a tunnel through the Oriental ground to reach their own mine, on cer- tain conditions. At this time the miners of the dis- trict considered the ore deposits as merely superfi- cial, and gave but little thought to any extra lateral rights which they might have. In the subsequent developments, however, of the Silver King mine the ore was followed to considerable depth and beyond the side line and into the Oriental No. 2 ground. After about $300,000 or $400,000 had been extracted from the Oriental No. 2 ground, Mr. Doe brought suit in the Superior Court of San Bernardino county for the value of the ore extracted from that ground. This brought up the question of the extra lateral right of the Silver King mine. The Silver King owners came into court with elaborate plans and models to try to prove that they had on the Silver King ground a lode on similar lines as was con- tended in the celebrated Eureka case. That this lode had a well-defined hanging and footwall, and that the ore which they had extracted was within these boundaries, and had been followed down con- tinuously from their croppings, the counsel for Mr. Doe denied their right to justify. They contended that whether they had a vein or lode, or not, they had no right to trespass upon the ground of another because the end lines of their claim were not paral- lel. At this time the Silver King was not patented and their title rested upon their original, location, which had widely divergent end lines. The Court took the view of counsel for Mr. Doe, and the jury were instructed to award the extent of damages.

An appeal was taken from this decision to the Su- preme Court of the State, where the ruling of the lower court was reversed and the case sent back for re-trial on its merits.

Pending this decision the Silver King owners, about 1000 feet westerly from the original points of contention, again trespassed upon and extracted ore from the claims owned by Mr. Doe, who stopped them by a temporary injunction issued by the U. S. Circuit Court of Southern California. The testi- mony in this case was taken before an examiner of the court, which permitted all the testimony bear- ing on the merits of the case to be heard. Practic- ally the same points were involved as in the original suit, with the exception that in the meantime the Silver King owners had obtained a United States patent, or Land Office receipt for patent, showing parallel end lines for the greater portion of their original location.

The experts for the Silver King owners, following the lines of the Eureka case, contended that the ore deposits of the Silver King were within a lode hav- ing well-defined hanging and footwall boundaries; that the whole mass of rock between these boun- daries should be regarded as a lode within which ore might be anywhere found.

The experts for Mr. Doe proved that the ore was found only along the planes of three distinct and independent fissures, constituting three independ- ent veins. The apex of one of these veins, and that from which the ore in dispute had been extracted, was within the surface boundaries of the Oriental No. 2 ground.

The main points therefore which were brought be- fore the Court for decision were:

First — To what extent the non-parallelism of the end lines of the original location would affect the extra lateral rights; and

Second — Whether the ore deposits constituted an indivisible unity, or were several independent and distinct units.

As to the non-parallelism of the end lines, the Court finds that a patent having been issued show- ing parallel end lines, the presumption is that the Land Office was right in issuing it, as no attack is made on the patent.

It is believed that this ruling opens or leaves open a very wide field of uncertainty as to subsequent and adjoining locators to a faulty location, and that a more radical decision would in the end be of far greater justice to the miner. Space, however, does not permit of a discussion of this subject at this time.

After a careful consideration and thorough knowl- ■ edge of the facts, it is not seen how the decision . could be otherwise as to the constitution of the ore deposit. The question was stubbornly fought by able experts on both sides,

July 3, isn;

Mining and Scientific Press.

West Australian Qotd Mining.

The principal features of the gold fields of West- ern Australia may be briefly summarized as follows :

/. \'iisi /■'j-tini. — The area of the proclaimed gold fields is over HOO,0(JU square miles, and there are still unexplored enormous tracts into which pros- pectors have not yet penetrated. The total area of the colony is close on 1,000,000 square miles, and it may be assumed that throughout its whole extent it contains auriferous deposits of more or less value.

J. liarrtii Niitiirr of ihr Cnuiilr;/. — The greater part of the gold fields consist of a desert, fresh water on the surface being almost unknown, and where water is found it is of a densely saline character. All water for drinking purposes requires to be con- densed, and it has only been found possible to pene- trate into the country by the establishment of condensers at various points. The exploration and prospecting of the country has, to a great extent, been conducted by the use of camels. Experience has shown, however, that there is a considerable rainfall which can be conserved, also that there are subterranean watercourses and reservoirs through- out the fields.

.;. Riij)lilit;i iif Dcieh)pmini. — It seems almost in- (^redible that, in the short space of about three years, H00,000 square miles of gold fields have been opened up, many important towns built iu the desert, hun- dreds of miles of railways built, and numerous stamp batteries erected, some of them in the most distant parts of the interior. It has not been unusual to pay from i;(iO to £75 per ton for the transport of machinery and stores from the railway terminus to the mines. Labor charges have also been excessive, and this has rendered mining operations most costly. In spite of these difficulties, the returns of the West Australian Chamber of Mines for the month of April last show that 14,452 tons of ore were crushed, yield- ing :!1,957 ounces of gold, equal to an average of nearly i\ ounces per ton. Undoubtedly this result bears eloquent testimony to the enterprise and activity of those who have had charge of the devel- opment of the mines.

-(. Chiiriictrr of thf Gohl DepositH. — The reefs are of two distinct kinds — (1) quartz veins and (2) compos- ite veins, known in Western Australia as " lode for- mations." The quartz veins have similar character- istics to those of other countries, but are of exceptional richness, and certainly exceed all pre- vious experience. The gold generally occurs, as elsewhere, in chutes, which vary very much in length and thickness, and the value of any mine working on these veins depends entirely upon the length and thickness of the payable chute. A remarkable feat- ure of these gold fields has been the extraordinarily rich patches of almost solid gold that have been found in detached masses in mines like the London- derry, Bayley's Reward and others ; but a still more remarkable feature is the high average value of many of the reefs over long distances and for great widths. This high average value is not confined to any particular center, but is found throughout the gold fields.

The composite veins of Western Australia appear to be as peculiar to that colony as the gold-bearing conglomerate beds of .Johannesburg are to the Trans- vaal. They chiefly occur in the diorite or diabase, but are not unknown in the granite. No scientific study has been made of these formations up to the present, and they have hardly been explored below the zone of decomposed diorite in which they consist of a light-brown rock of a clayey and talcose char- acter, intersected in all directions by veins of quartz of varying thickness. So far as is known, the more numerous the quartz veins the richer the formation in gold. The transition between these formations and the country rock on each side is often not well defined. Information is wanting as to the behavior of these formations below the decomposed zone. So far as is known at present, they become hard like the enclosing diorite, and contain iron sulphides and tellurium ores, and are equally as rich in gold as in the decomposed zone. Sufficient time has not yet elapsed for the mining companies to sink their shafts into the undecomposed rock, and results will be watched with much interest. These " lode forma- tions " are of great size, are persistent over large areas and their gold contents are, as a rule, very regular, varying in diflerent formations from half an ounce up to many ounces per ton. Extraordinary results have already been obtained from these forma- tions, not from a few tons of ore, but from large quantities and continuous crushings. For instance:

Ttjiis Gritil Yield per tun,

vnislied. vccocercd. Ozn. dwU.

Great Boulder Proprietary Cu 31.02() 82 612 3 18. (ill

LaUo View Consols 11,037 31,17.3 2 16.11

Hannan'.s Brovvnhill Gold M. Co . 2,M8 18,'124 8 5.0(1

These results, it must be remembered, have been obtained in the face of the great difBculties already pointed out, with inefficient and inadequate ma- chinery, and by the use of the extremely dense salt water which is alone available. In many cases from one ounce to two ounces of gold is left in the tail- ings— equal to two or three times the amount con- tained in the original ore of some of the richest mines of other countries. There seems little doubt that, when sufficient time has been given to allow of the

industry being organized, and machinery placed on these formations, a production of gold will take place which will eclipse that from any other part of the world.

• ', Mi-ifliUtfvtj itiifl Mithuifx of On' Tirtiltiiftif. — The specially difficult conditions under which West Aus- tralian mining presented itself at the beginning has resulted in a diversity of practice among engineers with regard to machinery and ore treatment, and great attention has been given to dry treatment. The author's opinion is that, so far as the treatment of the ore from (juartz veins is concerned, wet crush- ing and plate amalgamation is the most economical, where sufficient water can be obtained for the pro- cess; but for the 'lode torniation," in which the gold occurs in an extremely finely divided condition, and which also contain a quantity of clayey and tal- cose material (forming slime), dry crushing is prefer- able. He suggests that the ore should, as it comes from the mine, be dried, and in some cases partially calcined in revolving dryers. It should then be crushed dry, and the pulp divided into two products by air winnowing, viz.: (1) A product easily per- colable. (2) A very fine product or slime. These are then treated by cyanide or bromo-cyanide solu- tion, extracting all the fine gold, and the tailings dealt with by some form of amalgamation. It will be seen that this is a complete reversal of the ordi- nary method of treatment, and from the author's ex- perience will give better results.

ti. Ocriirn-iicij of TrUuriilcs. — A considerable amount of interest has been aroused by the fact that ores of i tellurium have been found in the "lode formations," and as these ores generally occur in formations rich in gold, it has been rather hastily concluded that their value is mainly dependent on the presence of telluride of gold, whereas there is no doubt that many of the "lode formations " in which no tellurium has been detected are as rich, if not richer, than those containing that metal. A considerable amount of the gold occurring with some of the tellurium ores is in a free state, and, as tellurium itself is unattacked by cyanide of potassium, there would seem to be little difficulty in extracting the gold by that means. It is possible that in some cases gold may occur in the form of a telluride of gold, and, if so, it would have to be kept apart for treatment of smelters. — C. E. Moreing's paper read before the London Institute of Civil Engineers.

Destiny of Mining Investment.

The recent past experience of the mining industry has introduced into financial and other circles a sub- ject of discussion of great interest to mining invest- ors and speculators — indeed, to all who are con- nected with this great industry either closely or remotely. It is whether mining investment will gradually decline until it reaches, in a few years, the vanishing point, or whether, on the other hand, it will more and more attract the capitalist class, to the detriment of other phases of industry. Now, this is seemingly a difficult question to answer, but it would not be audacious to predict, with some feel- ings of assurance, the future course of public invest- ment. The probabilities are highly promising that the mining industry will increase in favor as the years roll on, as new gold fields are opened up, and as scientific methods are modified and improved upon. But we must always expect to see ebbs and fiows. The stream of investment will never flow un- interruptedly and in increasing volume.

But, in forecasting the future, a most important and vital circumstance must be taken into full con- sideration. The many evils from which the industry suffered in the past have been greatly diminished, and will become fewer as the years advance. Conse- quently dangers will be lessened, and investment will not be so risky an enterprise as of old. It is safe to say, therefore, if the public will fully grasp this fact, that, far from allowing their favors to be diverted elsewhere, their affection for the industry will become stronger, and thus mining, instead of declining, will become more and more the favorite medium of investment. Science is advancing. That is the great hopeful, assuring fact. Where in the past profitable working was impossible, with im- proved machinery and more economical methods of treatment mining can now be carried on with suc- cess. Then new gold fields are coming forward des- tined to surpass in richness and reliability anything that has yet been heard of. The failures and disas- ters which accompanied the introduction of some of the great gold fields in the past are not likely to be repeated in the careers of these newcomers, for not only are the indications of permanence most con- vincing, but the facilities for economical working are exceptional, whilst profits will be earned from the treatment of tailings which in old times were discarded as valueless. This is another powerful reason against the decline of mining investment, and one which should foreshadow greater activity than has ever yet been displayed. The great evil, of course, is gigantic, and the less remediable of all. It is the unscrupulous company promoter, whose in- sidious tactics it is almost impossible successfully to combat. Enormous capitalization is insignificant in comparison with his success in foisting worthless

properties upon the unwary investor. Though he is believed by many to be less successful than of old, owing to the exercise of greater caution and judg- ment on the part of the public, this is very doubtful. — London Mining Journal.

Side Lines Adjoining Agricultural Patents.

A correspondent asks what action has been taken regarding the Sawyer decision which forbids the fol- lowing of veins or lodes past side lines of a mining claim Into land under an agricultural patent of dale prior to the location of the mine. Unless legislation is had in the matter there Is no likelihood of anv change. In the case of Amador Medeau Gold Min- ing Company vs. South Spring Hill Gold Mining Company et al., as reported in Vol. 36, Federal Re- porter, page 008, .fudge Sawyer stated in his de- cision, " The only (juestion is whether, under the Re- vised Statutes, a party discovering and acqulrln" title by patent from the United States to a mineral gold-bearing vein or lode having its apex within the land purchased, is entitled to follow the vein or lode down on its dip, across the boundaries of his own land Into the agricultural lands of an adjoining pro- prietor who has the older title'i' In my judgment he clearly has not. The equitable title to'the'airlcul- tural lands, held by plaintiff, fully rested on the en- try and payment by Hammack on June 15, 1874. After that the United States merely held the dry legal title in trust for the purchaser without any pecuniary or beneficial interest in It. From the mo- ment of the entry, payment, and issue of the certifi- cate of purchase, these lands cease to be public, and become private property. Milling Company' vs Spargo and Same vs. Fick, 8 Savoy, (J47, ir; Fed! Rep., 348, and cases cited. Also, Wirth vs. Branson m U. S., 118; Detfeback vs. Hawke, 115 U. S., 405| (J Sup. Ct. Rep., 95. By the entry and payment by Hammack, there being no known mine on the land, the entire interest to the center of the earth rested in him, and there was nothing left In the United States for a subsequent grant to other parties to operate upon. The only exceptions in the patent relate to easements and other prior rights already vested in other parties, before the date of the entry, as was held in case of Milling Co. vs. Spargo, cited! No other exceptions are authorized by the statute to be inserted, and exceptions not so authorized, if in- serted, would be void. Cowell vs. Lammers 10 Savoy, 254, 21 Feb. Rep., 200; Deffeback vs. Hawke, 115 U. S., 402, 40(1, (j Sup. Ct. Rep., 115. Section 2322, Rev. St., relied on by defendant, does not authorize any such exception, and it only applies, at most, to public lands, and to rights acquired by such lands before other parties acquire interests therein. It certainly does not apply to agricultural lands dis- posed of years — perhaps half a century — before by the Government and before any easement, or other right, has become vested in other parties. The United States can undoubtedly grant easements, and other limited rights, in any portion of the public lands, and subsequent purchasers must take them burdened with such easements or other rights, but when it has once disposed of its entire estate in the lands to one party, it can, afterward, no more burden it with other rights than any other pro- prietor of lands. Minhiy DvbrU cast; 9 Savoy, 493, 18 Fed. Rep., 753. The defendant acquired no rights in the premises in question under the section cited, or any other statute of the United States, brought to the notice of the court, as against the prior grant plaintiff holds. The result is that there must be a judgment for plaintiff, and it is so ordered."

German Deep flining.

The .Journal of the Society of German Engineers con- tains a memoir on mining In the Upper Harz, by Mr. von Groddeck. The veins, which have been worked since the earliest times, yield argentiferous galena,, zinc-blende, and copper pyrites. Ample water power for working the mines is available, for art has come to the aid of Nature by hydraulic undertak- ings of great magnitude. Conduits, aggregating 75 miles in length, convey the water into 70 reservoirs with a capacity of 13,000,000 cubic yards. Secondary conduits of 50 miles in length convey the ivater to motors aggregating 3500-horse power, the supply being sufficient to last for fourteen weeks of unter- rupted want of rain. The water is economized in such a way that it is led from the higher motors to lower ones, and finally to others deep down in the shafts. The various mechanical appliances used in the mines are passed in review by the author, special refer- ence being made to the man engines and the hy- draulic engines. The new Kaiser Wilhelm shaft has been sunk vertically to a depth of 2840 feet. It has an internal diameter of 16 feet, and is the first and so far the only winding shaft in the Harz, with a circu- lar section and with iron tubbing. The sinking was begun in 1880 and finished in 1892, the cost being £90,000. The remarkable feature of the shaft is the absence of machinery from the surface, all the mo- tors being hydraulic engines placed at a depth of 1180 feet in tlie shaft at the level of the great Ernst- August adit. The water required is brought down in pipes from the surface and escapes through the adit.

Mining and Scientific Press.

July 3, 1897.

Mining Summary.

CALIFORNIA.

Amador.

ftepuhUcan : At the Kennedy rock from this mine at the 2150 level averages $15 per ton. The new hoist for the north shaft will have greater power than any ever used at the Ken- nedy mine. The company has lately bought thirty acres east of its location on wbich a perpendir^ular shaft will be sunk to a depth of 3500 feet. Sixty additional stamps will then

The Anita mine has reached a depth of 500 feet, and last week a very heavy flow of water interfered with work. The pay chute is 114 feet in length. . ^ . , ,. ^ . ^,.

At the Zeila the retimbering of the shaft has caused several months' delay, but the work is now nearing completion. A station has been cut at the 1180 level which is to be opened up. The mine will probably be in full operation some time in July. ,

Ore from the Argonaut mine amounting to 500 tons was handled at the Zeila mill re- cently and yielded an average of 111 per ton

^D ^Dutmann has purchased the Muldoon mine and will begin operations withm a short time At present work preparatory to the lo- cation of the shaft and hoisting works is go- ing forward.

On the South Eureka, at a depth of 1200 feet, good rock has been taken out. A second shaft is now being sunk 900 feet south from the present workings. A drift 485 feet north and 380 feet south was made in this mine be- fore encountering any pay chute.

In the Union Consolidated a station at the 500-foot level was cut some time ago and the ledge encountered a3 feet from the shaft. The improvement of the rock is apparent, and no doubt the 30-stamp mill will be kept going in the near future.

LeiUfcr: At Volcano in the Marklee mine, which has remained idle for many years, re- cently G. P. Rixfordof San Francisco acquired some of the Interests of Marshall and Hall and he now proposes to reopen the property.

The Iron Mass has the new hoist in opera- tion and has taken out the water. The man- agement of the Iron Mass is in charge of A. B. McLaughlin and he proposes to sink to a new level and take out and crush ore.

At the Monte Cristo recent developments in the ore body show improvement in the amount of gold carried.

Record: At the Potazuba mine the shaft is down 360 feet and sinking is progressing at the rate of ii feet per day. It is the intention to run drifts north and south at a depth of 500 feet; and if the lode is found to be as good as that encountered on the 100 and 200 foot levels a mill will be erected.

At the American mine sinking is progress- ing, and in the bottom of the shaft a 10-foot vein of ore is exposed. The mill has been started up again. Sixteen men are on the payroll at present.

Liens and attachments aggregating $10,000 have been tiled against the Bay State mine at Plymouth.

The Baliol mill is running steadily on the adjacent property.

The Argonaut 40-stamp mill will be com- pleted in about three months.

The manager of the Consolidated Gold Mines of California reports to London as follows; 800-foot level— South drift has been extended a further distance of 21 feet; 1000-foot level— Twenty-five feet north have been crosscut from the east crosscut to make preparations for sinking proposed winze on the quartzite ; 300-foot level— The bulkhead from the east crosscut has been removed to the west side, and we have commenced to clean out the 760 feet of tunnel between the shaft and Amosky vein. Clark and Coffee— In this mine we have commenced to raise on the vein, which looks very promising, and for the week just ended thirty-eight tons of ore from the raise have been removed to ore bin ready for milling. The 10-stamp mill is now running full time, and next month will work a fortnight on Clark and Coffee and a fortnight on Banner ore.

Calaveras.

Prospect : One of the properties owned by the Murray Creek Mining Company, has been bonded to J. B. Rodgers, and work will com- mence on the mine next week and the mill will soon he started up. Two tunnels have been run, one crosscutting the ledge at a depth of 125 feet and the other at a depth of 200 feet.

Chronicle: At the Paragon mine work is progressing well in three tunnels. Tunnel No. 1 is now in 127 feet and has cut the Paragon led?e. It is full 7 feet wide, lies in smooth slate walls, well defined, the quartz prospects well in free gold and also carries a large percentage of sulphurets. At tunnel No. 2, on the Tip Top ground before reaching the Bullion lode a well defined 4-foot vein was encountered, with yet no foot wall reached. Four feet of quartz shows that it will mill well in free gold. Tunnel No. 3 is being driven on a small vein in the Tip Top ground, which vein averages 12 inches wide and is high grade. They have constructed a 5-stamp mill with timbers and shafting for ten stamps.

The Malones mine at Robinson's Ferry on the Calaveras side of the river closed down last week, an order to that effect having been received from the directorate in San Fran- cisco. About twenty men were thrown out of employment A deposit of rich telluride ore was found in this mine about a year ago.

At the Quartz Glen mine near Rich Gulch the working tunnel has been driven in over 1000 feet on a fissure vein, with granite walls, the ledge averaging G feet and carrying a large percentage of good sulphurets. The

mill has five concentrators. A, U. Marsh is superintendent and twenty-five men are em-

^ Col W. T. Robinson has bonded the Wesson quartz mine. Active work is now being prosecuted on the lead. A 10-stamp mill will be put upon the property.

At the South Paloma {extension of the Gwin) a 35 H. P. hoist has been put in to sink to 1000 feet out and drift the ore body. The shaft is now down 675 feet. The large hang- ing wall vein has pitched towards the foot wall and the two are expected to contact at 700 feet.

£1 Dorado.

Nuoncl: At the Pine Hill mine fourteen men are employed. They are down 340 feet, and have about 1100 feet in drifts and pros- pee ts.

At the Griffith Consolidated they are down 270 feet. They are sinking for the 300-foot level. At that time they will commence drift-

The Atlantic mine, near town, has been bonded, and the present controllers are re- pairing the old shaft with the intention of sinking deeper.

Kern.

Randsburg Miner: In the Val Verde No. 2 last week a new 3 foot vein was uncovered. Since then the vein has been perceptibly widening and the ore has increased in rich- ness. , J p

On the Alameda ore is being sacked tor shipment. Ore in the various workings con- tinues to grow better as depth is gained.

Kinyon & Sons have just received 13,346.40 from the mint, the result of a cleanup on forty tons of ore recently milled at Garlock.

W. B. McConnell, F. A. Pratt. H. F. Par- ker, J. A. Haralson and H. C. Flanagan have just taken a bond on a group of four claims near the Petaluma in the sum of $22,500, and will in a few days put men to work develop- ing the property. The claims are the Skoo- kura, Yorkshire Lass, Spokane and Superior.

Nevada.

{Special Correspondence.) — Califox'nia is recognized the world over as a great gold- producing country. To-day, with the fabulous amount of gold taken from her hills and val- leys, the State is still in the infancy of sys- tematic mining, and none the less so in the production of precious metals.

Nevada ranks at present as the banner county of the State in the mining field, and yet it is safe to say that she is only in her baby- hood. Present development and present indi- cations point to the assurance that in the territory of this section awaiting the pros- pector's'pick and the capitalist's aid to labor, prudent investment cannot make any error of judgment by coming into this county.

Whilst much is said of the "Great Mother Lode'' in the lower tier of mining counties, the question is rightfully asked, " What about the Great Father Lode running through Ne- vada county?" In reply to this, one need but refer to the Nevada City and Grass Valley folio of the United States geological survey for authority as to the rich and extensive for- mations permeating the county. Aside from this, the properties at present in active opera- tion are a most convincing argument of the productiveness and stability of the county.

The question of deep mining, as is well known, is no longer an experiment in this section. It is none the less true that proper- ties which were abandoned at water level, or such as failed some years ago for want of high explosives, are again receiving attention, and some of them are already proving them- selves a veritable storehouse of wealth. Some of these shall receive special notice later on in verification of the statement made in the preceding sentence.

New developments are gradually coming to light, and these, too, will be referred to specifically, to show the true state of facts in the advancement of mining in this county.

With its past history, its present record, and its new di.scoperies of paying ore bodies, Nevada county is certain to attract the atten- tion of capital seeking opportunities for care- ful and safe investments. Like in many other localities, much of future success must depend in a measure on assistance from out- side the county, though perhaps few localities show such a precedent for investment of home capital as do Nevada City and Grass Valley. The field of operations is widening and is consequently not confined to one or two par- ticular districts.

It is probably well to state for the informa- tion of many Eastern readers of the Mining AND Scientific Press that Grass Valley and Nevada City are both on the railway, and but a short distance of counection at Colfax with the overland trains from the East.

In addition to the mining resources and rail- way facilities, the other important factors of wool and water abound in plenty and conven- ience. Electric power is no less a representa- tive feature in active operation. With the above facts, though briefly outlined, a fair knowledge and a safe estimate can be gained of the present important position, and the promising future, of Nevada county in the mining world. J. F. L.

Nevada City, June2S, '97. Traiiiicript : Letson Balliet is looking after the affairs of the Des Moines company that is working a mining claim on Alder creek west of Truckee. A double compartment shaft is being sunk on the ledge and is down about 40 feet. Preparations are under way for erecting a hoisting and pumping plant, to be run by water power.

A. L. Bigbie, who will direct mining operations for the Electric Power Com- pany in the Yuba river channel during the summer, has left for the scene of his work, tie will make Purdon's crossing his base of operations. The water of the Yuba will be turned into the Power Company's flume and the gravel in the river bed will be prospected to see if it will be profit-

able to work the long stretch of channel that can be drained. Within a few weeks forty to fifty men will be at work under Mr. Bigbie.

Sentinel: The Jubilee quartz mine near Auburn is being developed. The ledge is from 2 to 2y^ feet in width and shows free gold in many places. It is owned by Paul, Kirby, Morgan & Bourne.

Herald : At the Gold Blossom mine a hoist is being erected to be operated by steam and the drills run by compressed air. The machinery that is being put in is sufficient to enable them to sink to the depth 1500 feet. It is the first mine in this vicinity that has done away with the bucket and adopted the cage as a means of hoisting.

Plumas.

Independent : At the Plumas Imperial mine, owned by C. D. Hazard, piping has been brought to a close for the present season, and the work of cleaning bedrock, bedrock cuts and gold flumes is being vigorously prosecuted.

National Bulletin: At Taylorvilte men are being put to work on the Lucky S. mine. This property was purchased by Mrs. Weggener last year, but little work has been done since.

The mill at the Robinson mine was started about a week ago and the yield of gold thus

The formation is serpentine and slate. The lower tunnel is 600 feet long and has 300-foot backs. The property is idle for want of capi- tal. E. L. Craft is the present owner.

The Bald Mountain Extension (gravel) is running a tunnel for the channel, which at present is 845 feet long. The gravel yields a good "prospect." This is the old Bald Moun- tain lead which paid handsome dividends for thirteen years. The company {incorporated) expects to reach the channel within a short distance.

Forest, Cal., June 26, '97.

Enterprise: The hydraulic mines at Cray- croft have closed down for the season. The clean-up for the year exceeds expectation.

Siskiyou.

News: The McKinley mine, near Oro Fino and owned by Raymond, Tuttle & Coburn, is being developed by tunneling and a large body of ore has been opened up.

A rich chimney of ore has been struck in the old Steele ledge of Quartz valley, now the property of Morrison & Coburn. This mine is showing up well under late developments, aside from the recent important find.

There is some talk of fitting up the old Steamboat mine near Fort Jones for opera- tions.

Considerable prospecting has recently been done near Honolulu with good success. Sev-

far has been much better than was expected, g,,^^ promising claims have been located,

New hoisting works will be erected and power drills put into the mine. About thirty men are now in the employ of the company.

San Diego.

Union: The placer claim of 120 acres twenty-five miles beyond Foster station, on the Cuyamaca railroad, owned by Pierce, Benton, Morse, Burk and Schafer, all of San Diego, has been sold to Colorado mining men, who will develop the property. The price paid was 130,000. It is expected that work will begin in about a month.

Shasta.

Free Press: A ledge of gold quartz ore has been struck in the Salee & McDonnell mine, at Bully Hill. They began work over a year ago upon a long tunnel with which they ex- pected to cross cut a ledge of free gold ore. They ran through several small veins and finally, after running 1000 feet, tapped the ledge at a depth of 500 feet.

Chapman & Voluntine, owners of a hy- draulic mine on Clear creek, have closed down after a very successful season's run.

Fitzhugh, McCutchen and Henshaw agree to deliver to the Mountain Copper Company each week for six months, from June 3d, thirty- five tons of quartz ore from the Even- ing Star mine, in Old Diggings mining dis- trict.

The National Consolidated Mining Com- pany, at Old Diggings, has twenty-eight men in the mine, and the mill is crushing quartz with good results.

ScarrhUolit : At the Niagara little is being done pending the reorganization of the com- pany, which will be effected by July 1st.

D. B. Hunt, representing Senator Jones & Company of Nevada, is placing two large 3- stamp batteries on the Milkmaid mine at French Gulch, which, owing to their large possib'e discharge, are regarded as equal to an ordinary 10-stamp mill. Twenty men are at work, and more men will be employed July 1st. About 600 tons of ore are on the dump from development work.

Hall &■ Carpenter, who have opened up a property at Hall City, are now crushing ore from their mines.

The Gladstone, owned by the Euclid Min- ing Company of Ohio, superintended by F. E. Brighton, is reported to have made a new rich strike. Upon being exposed the vein proved to be 5 feet in width.

The Portuguese Plat property near Delta has been purchased by W. R. Conant, who is now sole owner of the whole property, com- prising nineteen claims. It is a combined quartz and gravel proposition, and, so far as has been worked, has given good returns. Mr. Conant proposes to begin a thorough de- velopment.

At Harrison gulch Capt. Roberts is putting in his new process, and is resuming work. Twenty-five men are in the mine and seven are at the mill. Only five stamps of the mill are running, owing to insuflicient capacity to treat the product of the complete mill. The settling tanks, barrel amalgamators, etc., of the new process are now in use, but the cyanide tank is not yet completed.

Sierra.

(Special Correspondence). — Development work in and about Forest is showing con- siderable activity. The Bald Mountain Consolidated Company is at work at the edge of the village. Their tunnel is 3700 feet long, tapping the channel at 2400 feet. They are crossing the channel, and at 400 feet have not yet reachea the west rim. There are eight men employed in the devel- opment work. An S ton locomotive is on the ground and will soon be put in use for haul- ing the cars. There is a water right and tailing claim attached to the grounds, which comprise SOO acres. P. W. Page is manager, and J. O. Jones is the superintendent.

The Kate Hardy on Oregon creek, a quartz property, has two tunnels 60 and 300 feet. The ledge will average 4 feet of pay ore. The formation is slate hanging and porphyry foot- wall. The property is idle at present for want of means to prosecute the work. Hooper & Dudley of Forest are the owners.

Benson & Meehan, nine miles easton Amer- ican Hill, have tapped an ancient channel by an 800-foot tunnel. Gold is found in soft bed- rock in coarse pieces. Tbey have 200 acres of ground.

The Dreadnaught quartz mine, three miles from town, has two tunnels on the ledge, which averages 16 inches, running from 3 Inches to 4 feet, the ore averaging *5 per ton.

A new 10-foot vein of porphyry is being de- veloped by Freshour & Jackson. The dyke is located on the summit of the mountain be- tween Lumgray and Empire creeks, at an elevation of about 1000 feet above the Klam- ath. It is supposed to be an extension of the 50-foot dyke on Empire owned by Mr. Fresh- our, which will mill about $3 50 in gold. There are thousands of tons of ore in sight in the upper dyke, which has a tunnelin 80 feet.

Jiturnal : At the Commodore mine on Bark- house creek some good work is being accom- plished. This mine is at the head of Bark- house creek. The double arrastra reduces five tons of ore every twenty-four hours.

Bailey & Carrick of the Katie May mine on Greenhorn have not been taking out any ore from their mine lately, but are soon to run a tunnel.

The Scheld brothers are taking out some good ore at their mine on Long gulch, near Yreka, which they crush in an arrastra at the mine.

Reporter: At Sawyer's Bar a number of prospectors are at work in the different gulches in this vicinity.

One by one the hydraulic mines are clos- ing down on account of the scarcity of water. All the miners seem to be satisfied with the season's run, although it was exceptionally short.

Mauche and partners are digging a ditch on their claim that will give them about 4000 more inches of water.

The Jumbo mine will open shortly.

Trinity.

Scarcldiglil : Chambers & Harrison at Hall City have a lease and bond on the Green property, comprising the Yellow Stone, White Rock, Sabbath and Quartzite claims. About fifty tons of ore are on the dump. They also have a bond from Hall & Landis on the Isabel and Evaleen claims, and are now putting in a 5-stamp mill, which will be running next month.

Journal: On East Fork the Thanksgiving mine is being operated with good results.

At the North Star mine ten stamps are kept dropping on good ore. Mr. Mayberry, the superintendent, has recently fitted up the mine well and has it on a paying basis.

Reed. Given. Simpson and Zuella have re- cently discovered a 3foot body of ore.

At the Lone Jack mine under the superin- tendency of Grant Day, the mill is kept run- ning steadily on good ore.

At the Independence mine, owned by Hippler, Carr and Brown, work is steadily progressing toward the main chute of ore.

Taolnmne.

Denuicratie Banner: The Green mine, be- tween Confidence and Sugar Pine, is being pumped out preparatory to development.

Superintendent Richard Chute, at the Rap- pahannock, is drifting on the fissure vein from the 600-foot level.

At the Arbona a tunnel 190 feet has been driven and drifting is being done north and south. The vein is from 4 to 12 feet and car- ries free gold and sulphurets. There is upon the dump 500 tons of ore ready for the mill, which will be in operation by the 15th of July.

At the Marietta, under the superinten- dency of W. G. Long, the shaft is down 400 feet. At the 150-foot level drifting is being done that will tap the Gagnere. The vein is from 4 to 8 feet wide. Mr. Long commenced operations on the Patterson, below Tuttle- town, this week.

N. J. Coleman has a shaft 145 feet in the Anchor and will sink it 300 feet, at which point he expects to cut into the vein.

G. Ogden, at the Providence, has a 6-foot ledge in the bottom of the winze, which gives a good mill test both in free gold and sulphurets. Mining expert Newhouse, of San Francisco, has examined it for San Fran- cisco parties.

Union Denwcrat : At the Rawhide the main shaft is nearing the 12(J0-foot mark, and a new station and level will be run when that depth is attained. Work still continues on the north drift of the 800, while the big body of ore in the slopes between the lOUO and 800 levels is fine as ever. The vein holds a regu- lar width of about 35 feet.

At the Lady Washington the mill is about " completed, and will .soon be crushing ore from the mine.

At the Providence preparations are being made for putting in a hoisting plant. Work on an upraise from bottom of shaft is being

July 3, 1807.

Mining and Scientific Press.

prosecuted. Wben this is completed siakiog wilt be coDtinued for :iU0 feet.

At the (irizzly a hoist is Id course of con- structioD, while sinkiog oo the vein stUl goes on. A large Hume is being built to convey water from the river to the properly.

Ktght men are drifting and cross-cutting on the Consuella.

Mather l.ntie: At the Colden Kule a cross- cut is being run for tbe east vein on the :iO0 level.

At the Trio the new three compartment shaft isdowa45feet. Two ten-hour shifts with four men each are employed in sinking. A rich body of ore has been found in the west cross- cut on the UOO level in No. I shaft. Yuba.

Nevada TnxnAcriitt . At Smartsvilte the Allcnder Vuba Uiver Mining Company is be- ginning preparations for mining the river bod with renewed energy. It is expected that everything will be tn running order bv the middle of next month.

Interest in the quarts: mines is still in the ascendant. Considerable work has and is now being done on what is known as the Nug- get Ledge, on Sand Hill.

NKVAIIA.

.Sffrri- SUiti : J. A. Blossom has shipped from Winnemucca tifteen tons of high-grade ore from his Kennedy mine to a smaller in Utah.

Tuscarora Timfx-lirvirw: The ledge in the Dexter was encountered in the now shaft, as was predicted by Supt. .1. F. l*arsons. At present they have not reached the footwall, and its full extent is yet u matter of con- jecture. It is the inlenlioo of the company to carry the shaft on down. Both tbe foot "and hanging walls run high in gold and are mill- ing ore.

Sluicing has begun on the placers of the White Kock Mining Co.

Mason and b^leishman have made a new strike oo their copper property on Lone moun- tain.

Pioche Hii'iivd : The De Lamar Company in- creased its working force. More men are em- ployed than at any tune in the p^st. The work of reopening the caved ground of last month is being pushed Prospecting work has been resumed. The mills at the De La- mar Works are operated principally at night. It is comparatively easy to crudh the ;iUU tons of ore needed per day In this time.

On the Uro mine, adjoiDing the Magnolia, the owners report at me bottom of the shaft A feet of ore that assays well in silver, be- sides a good showing in gold.

The work at the Magnolia has opened up what appears lo be a new ore body. It lies tu the south of the old chute, though close against it and very near the middle of the rUim. Au extensive broken up country, largely porphyry, is found, from which some fairly good oie is mined. The main tunnel has been pushed ahead and another ore chute encountered to the north.

White Pine .V'trs: At Cherry creek, in the Grey Eagle shaft, men are to prepare for sink- ing, and at the Star shaft sinking is being pushed as rapidly as possible.

The North Mountain Co. at Egan canyon are putting their machinery in position, and very shortly the mill will be running.

A new strike was made iu the Ontario mine, Robinson district, last week, i'he ledge is about ;i feel wide and the ore goes about .V) per cent load and carries a gojd per- centage of gold and silver. This is one of the oldest locations in the camp, having been worked for lead and silver m^ny years ago. At that time, however, ibe value of the gold found in the ore was comparatively small, and formed no part of its shipping value.

Yerrington Hustler: Fish brothers are drifting on the Argona. Forty-two men are now on the payroll of the Boston Nevada Company. The shaft at the Pratt mine is down '.tj feet and four men are taking out gnod ore from a 2%-foot ledge. The owners of the Jrma Faye mine are now down 4o feet and the ore is getting richer. A 3U-inch vein of excellent quality is reported from the Lit- tle. The shall has been sunk 34 feet and the ledge is strong. Four men are at work on the Slrosnider mine, sinking and sloping in good ore. As soon as the r25-foot level is reached crosscut ting will commence. The Pioneer mill at Pine Grove, which has laid idle for many years, started ten stamps oo low-grade ore last week in order to test the machinerv.

ARIZONA.

Jintrnal'Miiicr: R. M. Doughertj' has sold his Charleston mining claim in the Bradshaw mountains lo the Gladiator Mining Company. The claim is an extension of the Crowned King and shows up well in ore.

The price at which the Standard group of claims on the Santa Maria were sold was #75,000, instead of $50,0U0, as previously re- ported.

Another body of free milling gold ore has been encountered in the Little Jessie mine at a depth of 190 feel.

The Crown Point group of gold claims, situated near Walnut Grove, under Super- intendent Brodie, is showing up finely. As depth is reached, the lead not only is widen- ing, but the grade of ore encountered is richer and gives indication of permanency.

Mojave Miner: In sinking the main shaft of the Eureka mine at Cerbat a 5-foot body of six-ounce gold ore has been encountered. The shaft on the Eureka has been sunk between the ore chutes, and the opening of the new ore body was a surprise to the owners.

At Painted Canyon a trial run has been made with the Smith stamp mill. The teams hauling from the mine are unable to supply the mill with sufficient ore, but more will be put on this week.

Kay & Vandercook have gone to El Dorado canyon lo again start up work on the mines at Kay camp. ^

Many prospectors are going into the coun-

try south of Kingman in search of gold. There are many small ledges showing on the surface within four miles of town.

At the Connor mine .1. Barry is making ex- tensive improvements at his' mill, and will soon be able lo increase the output.

W. Burkbart is taking rich ore from a lease on the Uetort mine, Mineral Park.

I. C. Conkey has put men to work on the Lady Bug mine, at Mineral Park.

OKKtiON.

Baker City nfitmck Dem'tcrat : lo the Cliff mine, north of the Flagstaff, a recent discovery made by the Bradbury Bros., the ledge In the drift from the bottom of an SU-fool shaft shows a width of 5 feet.

Montana people have made an examination of the Baisley-Elkhorn mine, wiih a view to a purchase of the property. The mine and mill are running with satisfactory results.

The placer mining season will soon close, on account of a scarcity of water. The season has not been as long as was anticipated. The output of gold thus far has been large, and the tinal clean-ups will swell the total.

P. Berthon, manager of the Flick Bar Min- ing Company, operating near the mouth of Powder river, has built a ditch eight miles in length and a reservoir this spring, and the claims are now In operation.

Mnnih>r-Miu(r: The Brass Nail, a placer mine in the .lurap-ofT-Joc district, owned by J. W. Kobinsoo, has been developed for three years. Owing to scarcity of water it can only be worked from three to six months in the year, but up to dale it has produced about $t;oou.

The Oregon Bonanza Company is operating night and day at the Anderson mill on Eclipse ore. This ledge shows two feet of solid quartz, all high grade.

BRITISH COLUMIilA.

I (Special Correspondence.) ~ The raining world is distressingly flat ]ust now and the cause of tbe depression cannot be accurately stated. A combination of unforeseen circum- stances is responsible, but none of the mining men appear to be able to give an intelligent reason, but all are confident that the depres- sion is only temporarv. Rossland papers say that owing to British Columbia mines Canada is about lo experience a period of prosperity. No doubt in time Canada will be greatly bene- fited by development of British Columbia mines, but for want of capital the mines are being developed very slowly.

There are many good prospects along the seaboard being taken up largely by Americans The numerous islands in the Gulf of Georgia are alive with prospectors and claims are be ing staked every day. Many of them are being purchased by Americans, bill after the report of the sale nothing more is heard of them. The time will come when there will be a great deal of business done in the way of shipping ore and legitimately developing the mines in British Columbia terrilorj', but perhaps owing to the unsettled stale of the English money market and the fact that Americans are turn- ing their attention entirely to the Kootenays, the seaboard propositions, though the most rosy reports of their merit are being given, seem to be between the prospecting and de- veloping stage. There are, however, three or four free milling propositions which will be crushing in sixty days, the Golden Cache in Lillooet and the Tinhorn in Okanogan dis- trict being the principal ones. If these mines make a good showing they will do much to re- store waning confidence.

The Providence mine in Harrison Lake dis- trict is now shipping in small quantities to the smelter, as is the Athabasca of Nelson district. The latter is a free milling proposi- tion. Goodman.

OTAH.

The Chicago Pumice Compmj' is making ar- rangements lo developexlensive pumice stone beds in Miller county, Utah, where the com pany owns 120 acres of land said to possess an abundance of the product. James Quigley is president of the company.

Tintic Miner: Shipments from the district for the week are as follows: From the Bul- lion-Beck, '20 carloads ore ; Centennial-Eureka, 3 carloads; Gemini, 10; Uncle Sam, 0; Ajax, 5; Carisa, 1 ; Sioux mill, 1 ; Swansea, 3; South Swansea, 0; North Star, 5; Governor, 1.

From the Gemini five carloads were sent out Monday and five Wednesday. For a time at least the shipments will probably amount to five carloads every other day.

At the Beck tbe force has been slightly in- creased during the past week, and the ore being sent out is reported to be some of the highest grade ever found in that great mine.

MONTANA.

Basin Pr»i/ra<s ; J. Berkin of Boulder has leased and-bonded the Legal Tender group on Cataract creek for three years at §12,000 A shaft is down 50 feet on the lead, and Mr. Berkin will continue this down to the 100-foot level, at which point they will drift on the lead.

The Boulder mill has been started up. This mill and mine have been leased for three years lo O'Neill and Largent by the Boulder Gold and Silver Mining Company. At present five stamps will run. Soon a set of jigs will be put in and two vanners added.

COLORADO.

(Special Correspondence.)— The new chlori- nation works, of fifty tons daily capacity, has been treating telluride and sulphide ores for the past fortnight, and two gold bricks have been produced that were valued at about $0,- 000. The management of the Delano Mining and Milling Company has built this chlorination mill at a cost of about ^150,000, for the purpose of treating the enormous quantities of low grade mineral produced in Boulder county, yet is exceedingly doubtful if the object be attained. The price for treating ore has been I

fixed at *10 per ton, which is 13 above the charges at the smelter for raw ores, and 10 higher for treating concentrates. It is stated that the actual cost of treating ore by ehlo- rioation will not exceed 9ii per ton, "which would give a net profit of IT per ton or *350 per day.

Arthur G. Gorham, prcsiden* and manager of the Marshall coal mines, returned from New York City last week, where he has been in consultation with the directors of the com- pany. Extensive arrangements were con- summated for opening the recently discov- ered Gorham coal vein, which is 10^^ feet thick, of elegant coal for domestic purposes. Superb machinery has been ordered for the mine, which is situated one-half mile south- east of Marshall camp, and near the Gulf railroad track. While the new slope is being made to the coal, and machinery erected, the several mines owned by this company will be run to their fullest capacity in order to sup- ply the demand for this particular coal. Mar- shall is the oldest joal camp in Boulder county, and will, during the winter, be an exceedingly lively town. Other mining mat- ters, involving an outlay of *250,000, were discussed by President Gorham before the board of directors, and within the next sixty days a company will be organized for the pur- pose of consummating the scheme.

The new Inter-Mountain Railway has re- ceived wonderful impetus during "the past three weeks, by visits to this city of import- ant railroad men from the East. J. T. Blair, of Greenville, Pennsylvania, has made acare- ful examination of the surveyed route from Boulder City lo the mining camp of Ward, with a view of the success of such an enter- prise. The road will be a ;S0-inch gauge ; will be thoroughly equipped with the most mod- ern and powerful locomotives for the moun- tain work. The object is to haul ore, passen- gers and freight at much reduced rates.

The company also proposes to build in the near future a mill— chlorination, cyanide or some cheap process for treating low grade ore. The capacity will be from 300 to 500 tons daily, and the supply of mineralized matter will be purchased at the mines of the numer- ous camps.

The Kii;on Company treats about eight tons of mineral dailj- by chlorination, while there are other chemical processes in operation in Boulder City treating the tellurides more or less successfully.

The bromine process has proven a fail- ure so far as treating the tellurides of Boulder county mines. Over *125,000 have been spent in the Keystone-Mountain Lion mines, and building the large mill, which the owners said would save '.15 per cent of the precious metal contained in the ore, at a cost of not over *2 per ton. The ore carried no gold and silver, or the process failed to save these metals.

The miners and merchants have put a lien on the property and the court has appointed a receiver. Wm. M. Rule.

Boulder, Colo., June 23, '07.

Rcpuf>Ucan : Assayer W. J. Plunkett of the United States branch mint gives the follow- ing statement of the gold bullion received at the mint for the fiscal year ending June 30:

IsUH. lS!t7.

First quarter $1,186, 161. 1'J 8I,-J24,'.191.5J

Second quarter ... 1,108.415.68 l,I17.70<),ll:J

Third quarter a*^l,iKI7.86 l,55'i,2i)4 59

Fourth quarter l,Ct)9,436 76 3,015, BUU)6

The property is producing

Totals $1,198,031.42 $6,944,S)04.19

Gain i/i. JS97.

First quarter $ 38,830.45

Second quarter 9,39.3 34

Third quarter 7i-2,'2m.7\

Fourthquarter I,976.382.3J

Total $3,746,882.77

If the figures given by the director of the mint and by the Wells-Fargo Express Com- pany, both of which give Colorado approxi- mately S15,000,000, are accepted, there is good reason to anticipate a production in this State during 1897 of not less than §35,000,000, For the last two quarters of the fiscal year end- ing June 30, IS'JB, and the first two quarters of the present fiscal year the receipts of the local mint were ¥4,340,235.18, a little'less than one-third the total production of 180(5, accord- ing to the authorities named. Assuming that the last half of the present year will be equal lo the half just closed, Cjlorado will have in mint receipts for 1807 over40,000,000, and with all due allowance for unforeseen accidents, if the ratio between mint receipts and total production in 180(3 holds good during 1897, the estimate of §25,000,000 is within the bounds of reason. It is well known to all mining men that the output for this year will be a very heavy increase over that of last, and esti- mates made so far based upon what is known of the present production of leading mines and districts range from *30,000,000 to §35,- 000,000, with the probabilities strongly in favor of the latter figure.

At Cripple Creek Manager Weston of the Good Will tunnel is devoting a'l his energy to the development of the veins cut in running the tunnel. It is likely that in a few days the treasury, which now only contains $10,000, will have its fund largely increased, when another contract will be let to drive the tun- nel ahead.

Manager McDonald of the Strong mine re- ports that he is now shipping a little over 3000 tons a month of ore that is worth about §50 a ton, average grade. Drifting is under way from the 500-fool level on a large body of ore. A new 100 H. P. boiler is being placed on the property over the main shaft.

The Anchoria-Leland management has re- sumed the sinking of the main working shaft, which, when worli had ceased about the first of the year, had gained a depth of 740 feet.

The Gladden lease on Lindsay ground on Beacon hill has broken into better ore than ever. Every bit of rock hoisted shows syl- vanite.

A new plant of machinery has arrived for the Grant & Kline lease on the Cariolanus on

Battle mountain. regularly.

The people who are working the Elkhorn have started a new shaft, which is now down T5 feet. Within a day or two they expect to put on machinery. The shaft is continued to 300 feet.

On the Hayden gold placer, a few hundred feel east of the Crescent ground. Reed & Hague are saving ore from a (50-foot shaft.

On the Yankee Girl on Womack hill W. B. Webb has taken a bond and lease and started retimbering the old shaft on the property.

The May t^ueen on the Lawrence townsile, worked under lease by Carhart it Saunders and others, is showing up well. Returns from several small runs from the 5-foot vein opened up at 05 feet have given satisfactory results.

At La Plata A. Lakes, who is making a geological examination of the new district, gives out the following opinion :

" From a general superficial and prelimioarv survey of the greater portion of the La Plata region, I am of the opinion that the geological conditions are decidedly favorable to the for- mation of veins and ore bodies. The grounds for this assertion are, firstly, ihe numerous eruptions of diorite, a variety of igneous rock which, the world over, is notorious for its gold bearing tendencies.

"Secondly, the peculiar mode of eruptions of enormous intrusive masses and sheets of this lava, in that mode of eruption known to geologists as laccolitic, has also its favorable points by fissuring the country in an unusu- ally plentiful way by traversing it with eruptive dikes and intrusive sheets, and by powerful metamorphic action on the sur- rounding strata. All these phenomena are recognized by the students of ore deposits as amongst the most favorable conditions for their formation.

"There is evidence, through these agencies, of the production of an unusual number of veins within a comparatively small area, a few of which have already been discovered and partially developed, but we prophesy that many more will be found by future pros- pecting. It will be premature to predicate the character of all these veins, but in those so far developed there are certain character- istic family features.

"The veins as a rule are comparatively nap- row from wall to wall— that is, the gangue matter— and in this gangue matter the pay streaks are still smaller, but in proportion to their smallness they are generally exceed- ingly rich, and it may be a surprise to many who have supposed that tellurium ores were confined to Boulder and Cripple Creek to learn that the La Plata area is, so far as we have observed, an essentially telluride camp." *At Yankee, for some time past the Gold Coin Company and an Eastern syndicate have been negotiating for the purchase of the Alice. The Eastern syndicate now have a bond and lease oa the entire property for two years, the bond being *250,000— §50,000 being paid down, §100,000 to be paid at the end of the first year, and the balance to be paid at the end of the second year. The big 300-ton con- centrator belonging to the property is to be thoroughly repaired and probably enlarged. The property is to be worked by air drills, in- stead of hand drills, as heretofore. The Alice Company owns IISO acres of patented ground, consisting largely of placer ground, in which the village of Alice is situated. The Alice mine probably contains one of the largest ore bodies of any mine in the State, as it is known to be 310 feet between walls, everything be- ing low-grade concentrating ore, with screaks of rich smelting ore running through it.

The working force on the Shell Back has been doubled Large shipments of smelting ore are being made to Idaho Springs.

Dr. G. W. Compton intends to start up work on his Kentucky property. A large new shaft is shortly to be erected on the Gilt Edge mine.

Some fine ore is being encountered in the Stormy Petrel mine.

Near Salida, in the Cameron district, three weeks ago, one could count on his fingers the properties that were over 15 feet deep. Now dozens of shafts have been sunk to 50 feet and more, and every day the enthusiasm grows. At the surface the veins are small, but depth increases both bulk and values.

At Idaho Springs a new hoisting plant is to be installed at the Smith &; Wiley property and the shaft continued deeper from the lower level, which leaves the shaft at a depth of 400 feet. A nice body of mineral shows in the lev- els being driven.

The rich gold streak found by Henry Black- wood on the divide between Chicago and Soda creeks is showing even richer than at first re- ported, and I inch of the mineral is alive with free gold. It runs §5 a pound. Of course, the streali is small.

While drifting from the shaft at the fourth level of the Eclipse mine, leasers have struck mineral which has all the indiea'ions of com- ing into an important ore chute.

Ore is coming in at the Champion mine, on Bellview mountain, and from the levels down lo the sixth several shipments have gone for- ward.

The Bellman mine, in Virginia canyon, has started up with work near the surface. The vein is the same as the Crown Point, but water makes in the Bellman shaft so rapidly that sinking was stopped by the former com- pany and the mine has remained idle for some time.

Leasers in the Great Republic have ex- tended the Matlie adit and are now coming into mineral which is thought to be the big ore chute like that heretofore found on the lode.

The new shaft at the Silver Age mine was sunk to a depth of 300 feel and levels com- menced at 100 and 300 feet. Both of these have been driven west and are now in good ore. By working through the Lake tunnel, the Windsor Castle people have opened into a big body of lead ore and are getting out some good shipments.

Mining and Scientific Press.

July 3, 1897.

Electrical Progress.

The Riverside Transmission Plant.

Written for tbc Mining and Scientific Press by W. A. LAYMoN.

On December first, '96, there was re- cently turned over to the city of River- side. Cal., from the California Electri- cal "Works of San Francisco, an electric transmission and general distributing system for power and lighting. The transmission of electric energy twenty- two miles appropriated the energy of mountain streams and placed within the reach of Riverside residents elec- tric power and light at favorable rates.

The Redlands Company, by contract, delivers to the city of Riverside at the switchboard of the generating station a three-phase alternating electric cur- rent of 2500 volts pressure. This cur- rent passes through step-up trans- formers which change the pressure to 11,000 volts, at which the energy is transmitted 22.4 miles over the open country to a sub-station in the City of Riverside. There it is in turn again transformed by step-down transformers to a pressure of 2200 volts. Prom the step-down transformers it passes to a distributing switchboard, and from the latter continues out over the general city distributing circuits — four in num- ber— of which two are for street arc lighting and two are for incandescent lighting and motor work. On these .street circuits reducing transformers are again used, changing the pressure to 30 volts for the street and commer- cial arc lights and to 100 volts for the incandescent lights and motors. From first to last the three-phase system of distribution has been followed.

The generating dynamos, which at present are two in number, are of 250 kilowatts each, and are of the General Electric 3-phase, 6000-alteruatioQ type. As before stated, these dynamos de- liver current to the switchboard at 2500 pressui-e. Since the two machines are not always required there are inde- pendent sets of bus-bars, and it is from either of these or both, as the case may be, that the energy for Riverside is taken.

The Riverside equipment accord- ingly begins with a marble panel on which are mounted three double- throw, single-pole, quick-break switches of the California Electrical Works' design and manufacture, by means of which cur- rent is thrown on a special set of three bus-bars feeding the step-up trans- formers. From these bus-bars the current passes through a panel of spe- cially designed single-pole fuse blocks to the three 100-kilowatt step-up trans- formers. These blocks are so made that the portion containing the fuse is separable and perfectly insulated, so that were it desirable to do so the fuse could at any time be quickly removed from circuit and as easily reinserted. Furthermore, the blowing of any fuse is devoid of the burning of contacts, and the block is accordingly good for unlimited service.

Coming now to the step-up trans- formers, there is found probably the most decided innovation of the entire equipment there, three in number, and of a capacity of 100 kilowatts each, built by the Electric Manufac- turing Company of St. Louis, under stringent requirements for efficiency. They are a radical departure from conventional practice, each being a series combination of two 1250 to 5500- volt units, encased in oast-iron, oil- filled, water-jacketed boxes. They were designed to afford not only a higher degree of insulation safely, but a more economic use of materials and a higher operating efficiency at all loads than is possible with an air- ventilated transformer. The insulat- ing oil is of the highest quality, as shown by proof tests, to be had in the market and is sent out under guarantee. The iron cases are built up in sections, each lateral mem- ber of which is so cased as to give suc- cessive small channels confining the water to constant flow up and down as if there were a continuous coil of pipe all

around the transformer. The sections are cross connected in such a manner that, all in all, there is not possible any communication of the water and the oil. The water flow is from a gravity head of about 15 feet, and can be reg- ulated at the will of the operator by means of globe valves in the outlet pipe of each transformer. The design is such that no cooling device whatever is required up to one-half or three- fourths load, and not until the appa- ratus begins to approach the full load does the temperature of the apparatus rise much above that of the atmos- phere. Operating under one-third load without cooling device, the maximum temperature attained in a ten-hour run was but 100° Fahrenheit.

Passing from the step-up transform- ers, the 11,000-volt current goes out through three single-pole quick and long-break switches to the transmission line. These switches are also of special design, manufactured by the California Electrical Works, and are so arranged that the blowing of a protecting fuse automatically opens them. Immedi- ately beyond the switches are the lightning arresters, of the Wurtz pat- tern.

In the transmission three No. 4 bare copper conductors carry the current. These conductors are mounted on porcelain insulators, these insulators in turn being carried on the iron pins. On the entire transmission line 3300 of these insulators have been used.

The substation is a single-story brick building 36 by 30 feet. The transmis- sion line enters the east side, passing directly to the high-tension switch- board whichhas single-pole, quick-break switches exactly duplicating those on the high-tension side of the step-up transformers. From this bigh-voltage marble switchboard, which is about 3 by 4 feet, the 10,000-volt lines pass to three bus-bars to which the step- down transformers are connected.

The step-down transformers are prac- tically identical with the step-up trans- formers in general mechanical feat- ures, being oil-filled and water-jack- eted. Their only difference is in the transformation ratio, and the capac- ity here being but 85 kilowatt units in- stead of 100 kilowatts as there, and having a reduction ratio of 5.

The step-down transformer second- aries lead direct to the distributing switchboard of the general wiring sys- tem of the city.

The marble switchboard, 7 by 12 feet, is designed and made by the Cali- fornia Electrical Works.

The step-down transformer second- aries, on reaching the board, are grouped in three-phase interlinking on the rear projecting studs of fuse blocks at the bottom of the main feeder panel. The current passes upward through these special fuse blocks to quick-break, single-pole switches, thence to the Whitney ammeters above and then down to three main bus-bars extending all the way across the board. Above the ammeters on the panel are three Whitney indicating volt-meters, reading through special resistance boxes direct on the full voltage on each phase of the main feeder circuits. 'The adjoining panel on the right is for the two three-wire arc lighting circuits. These circuits are fed from an auxiliary set of three bus-bars connected with the main bus- bars through a set of three fuse blocks and three single-pole switches. Be- tween the auxiliary bus-bars and the outgoing branches of the circuits are interposed single switches by means of which the arc load is divided up so that a small portion may be thrown on at one time. On this panel, occupying a position above all the,,switches, is a single voltmeter so arranged that it can be thrown on any two of the auxil- iary bus-bars.

The third panel is for a three- wire in- candescent current feeding the western business portion of the city. Here, again, the current for each leg passes from the main bus-bar through special fuse block to a single-pole switch above. Beyond the switch it passes through special pressure regulating transformers to the outgoing line. On this panel there is also a

single Whitney voltmeter and a single Whitney ammeter. The former is so arranged, through small throw over switches, that it can be quickly con- nected to either of the three phases of the outgoing circuit. The latter is so arranged that it may be plugged by means of special flexible leads in par- allel with either of the three single- pole switches below, and when so con- nected the simple opening of the switch in which it throws the current through the instrument. By this pro- cess a single ammeter is made to do the indicating, both on this panel and the next, in all branches of the two circuits.

The fourth panel is identical with the third, with the exception that where the ammeter is located on the third there is here placed the ground detector switch. This panel feeds the residence incandescent district, and on this, also, the outgoing line pressure is regulated by means of three Wagner regulating transformers.

'The six regulating transformers are designed to control the pressure of the circuits in which they are placed for a variation of 10 per cent above or be- low the nominal feeder pressure.

For street lighting there are used eighty 2000-candle power helios arc lamps, especially built for this fre- quency. 'These lamps are fed from an equal number of 2000 to 30-volt oil- filled transformers.

The incandescent service follows the conventional practice. Where require- ments and conditions accommodate themselves, large transformers feed secondary bus-lines, from which grouped customers are supplied.

The system in its entirety has now been in operation a sufficient length of time to demonstrate its success.

The California Electric Works of San Francisco have been represented in the field by A. J. Myers.

The installation as originally con- tracted for was to have cost $40,978. Additional work will, however, bring this up to about $50,000.

Drilling by Electricity.

The Bryam Oil Company of Indian- apolis has completed the first oil well ever drilled by electricity. It is lo- cated on a 400-acre lease about four miles west of Indianapolis, within sight of the village of Dundee. After prac- tical tests for a year and a half the company pronounces its power a suc- cess. One disadvantage was developed in drilling, and this fault is that the electricity does not raise the tools or the bailer out of the well fast enough. But, altogether, it is said to offer many advantages over steam power. It re- quires fewer men to operate the wells on the lease, there are no delays from lack of fuel, and, during the cold of last winter, when other oil properties showed a decreased production, that of the Bryam Company was at a higher point than during the summer and fall before.

According to the Journal <h McJicinc (If Bordeaux, a man placed under ar- rest for illegal practice of medicine, claiming to be a graduate of an Ameri- can college, presented a diploma which excited the suspicion of the magistrate. Calling in the services of an expert, the document was submitted to the action of a Crookes tube, and the re- sult showed distinctly the outlines, in the substance of the paper, of a name which had been erased from the surface to make room for that of the man who was convicted upon this evidence.

In the proceedings of the Chemical Society of London Heycock and Neville describe the study of the sodium-gold alloys with the X rays. Sodium is much more transparent to the rays than gold, and X-ray photographs of thin sections of the alloy show its crystal- line structure very clearly. The authors point out that other alloys may be similarly studied, and are at pres- ent engaged on those of aluminum. It is possible that by this method our knowledge of alloys may be materially extended.

Scientific Progress.

Liquefying Fluorine Gas.

At a sitting of the Academy of Sci- ences at Paris lately, M. Moissan com- municated the results of his experi- ments with Prof. Dewar in the lique- faction of fluorine gas. This gas, as is well known, has hitherto resisted all efforts to reduce it to a liquid state. M. Moissan announced in his address that it had now been liquefied by him and Prof. Dewar at about 185° centi- grade, below zero. The experiments resulting in liquefaction were conducted in apparatus invented by Prof. Dewar. When a current of fluorine gas is passed into an apparatus maintained in the midst of liquid oxygen in tranquil ebulli- tion at a temperature of minus 180° cen- tigrade,liquefaction does notoccur. But as soon as that temperature is dimin- ishing by exhausting the gas above the liquid oxygen, the liquefaction of the fluorine begins, and a clear yellow and extremely mobile liquid is obtained, which resumes the gaseous state as soon as the temperature rises. This liquid has lost the chemical activity characteristic of fluorine in a state of gas. It no longer attacks glass, sili- con, sulphur or phosphorus. Fluorine at a very low temperature, however, still attacks carburetted hydrogen, and its affinity for hydrogen seems still to exist. M. Moissan and Prof. Dewar are continuing their investigations, and although solid fluorine has not yet been obtained, M. Moissan is sanguine that this result will also be secured.

An Ergometer,

An instrument in use at Columbia University is a dynamometer made to write on a kymograph. The maximum pressure of the thumband forefinger or the movement of a single finger could thus be registered, and a series of movements showing fatigue could be recorded. The curves give the actual amount of work done, the height of the curves being proportional to the pres- sure in kilograms. The instrument was compared with Mosso's egrograph, and curves were shown in which the movements made in lifting a weight and in extending a spring were simulta- neously recorded. It was evident that the ergograph curves did not give a correct measure of fatigue, and of course gave no record when the weight was not lifted, whereas the ergometer curves measured more nearly the ac- tual course of fatigue. The instrument is being used in the psychological laboratory of Columbia University, to study fatigue and the effects of sensa- tions and emotions on movements. — Science.

Tin in Canned Goods.

In a graduating thesis at Washing- ton and Lee Universty, J. R. K. Cowan takes up the question of the presence of tin in canned goods, and his results confirm those of previous investigators along this line. He finds tin present in every can examined, including toma- toes, peaches, apricots and sweet pota- toes, in quantities of from 60 to 150 miligrams per kilo. Granting that this tin is present in a form which can be acted upon in the human system, and considering the large consumption of canned goods, it seems to follow that tin is less toxic than has been supposed and that it cannot be a cumulative poison. The maximum dose of tin is given as half a grain of chloride, but the amount of tin corresponding to this might often be taken into the system during a single meal. Very few cases of supposed tin poisoning ifrom eating canned goods have been reported, and it is probable there is little danger from this source. In no instance did Mr. Cowan detect the presence of lead. — Science.

At a late meeting of the Royal Soci- ety, Loudon, was exhibited by C. T. Heycock and P. H. Neville a curious alloy of silver and zinc, which would have warmed the hearts of the old-time alchemists. This alloy is of the ordi-

July 3, 1897.

Mining and Scientific Press.

nary color of silver, but when warmed up to 300° C. and then suddenly cooled, it becomes the color of copper. On re- heating and cooling slowly, it resumes its original color. The same effect is produced by heating in air, in hydrogen or in a vacuum.

Mechanical

Progress.

Weighing Sky Scrapers.

It is necessary for an architect to know the weight of a tall building long before it is put up. The character of his foundation depends upon it. Yet the estimation of this weight is so simple a matter that an under clerk or an apprentice in an architect's office often gets the task of calculating it. i His grand total may reach, as in the case of the twenty-one story Surety , Building in New York, 50,000 tons, or, in the case of some big bridges like the one at Poughkeepsie, 4000 or 5000 tons. How is it done ? In the first place, the weight of every piece of ma- terial to become part of the structure is furnished by the manufacture. i

Whether it be Z-bar girders or white , lead, it is all brought into the total. Even such an insignificant thing as a difference in the quality and kind of paint used may make a ton of differ- ence in the general weight of the structure. Every rivet in the build- ing is accounted for; and if the ends are fused or hammered down on the opposite side of a girder instead of be- ing merely bolted on, the fact must be taken into account. It the roof is cov- ered with tin, the solder which holds the plates together is put down as weighing so much per ingot. In lay- ing the tin plates on the roof the edges of each plate are lapped over the adjoining plates to the extent of a quarter of an inch on all sides. This quarter inch of necessary lap adds a large number of pounds to the general weight of the roof. So the process continues through the whole building. The weight of the clapboards, the plaster, the wall paper, the window glass, the gas or electric fixtures, the cornice ornaments and of the thousand and one materials and appurtenances which go to make up a building are considered and accounted for. In the aggregate, these weights, thousands of tons, constitute merely the dead weights of the building. The live weight, such as the weight of the tenants, the furniture and their other belongings, must be added to the total. An office building with a capacity of 3000 persons would be about 165 tons lighter at night, when it is deserted, than in the daytime, when it is oc- cupied. In office buildings it is cus- tomary to estimate about 100 pounds of live weight to the square foot. The buildings themselves press down upon the earth at the various rates of from four to twelve or fourteen tons to the square foot. The tall St. Paul building is estimated at the last named figure. The Surety building, mentioned above, is estimated to exert a pressure of six tons to the square foot.

ing or flaking off. The real value, how- ever, in making these mats in sections, is that they can be removed whenever it is desirable to examine the shell of the boiler, and can be replaced easily and quickly without injury.

They are secured to the boiler by means of hooks attached to iron bands, which are passed round the boiler un- der the mats. Besides this covering for boilers, the waste mica is made into sectional covering for all sizes of steam and hot-water pipes, the only differ- ence being that the mica is stitched between a wire core which fits the pipe, and an outer covering of canvas.

Nail Production in 1896.

The production of iron and steel wire nails in the United States in 1890 amounted to 4,719,8l!0 kegs of 100 pounds each, compared with 5,841,403 kegs in 1S95, a decrease of 1,121,543 kegs, or over 19 per cent. In 1894 the production amounted to 5,U81,801 kegs and in 1898 to 5,095,945 kegs. The wire nails produced in 189(j were manu- factured by seventy-three works, thir- ty-one more than were in operation in 1895. The production of 1896 repre- sented 210,708 gross tons.

The total production of cut nails in 1896 was 1,615,870 kegs of 100 pounds each, against 2,129,894 kegs in 1895, a decrease of 514,024 kegs, or over 24 per cent. There has been a steady de- cline in the production of out nails since 1886, in which year the maximum production of 8,160,973 kegs was reached. In 1896 the production of wire nails exceeded the production of cut nails by over 3,103,000 kegs. The production of cut nails in 1896 repre- sented 72,137 gross tons. Eleven states made cut nails in 1896.

The Largest Swing Bridge.

The Sanitary Trustees of Chicago will build the largest swing bridge in the world across the drainage canal at Thirty-first street and Campbell ave- nue. Its total length will be 400 feet 5 inches, and its width will be 120 feet. The height of the center columns will be 68 feet; headway under the trusses for trains, 21 feet; headway under the bridge, IS feet, and depth of water in the channel, 24 feet. The bridge will be of steel, weighing 7,000,000 pounds. It will be capable of supporting a trainload of 8,000,000 pounds. The to- tal cost is estimated at $700,000, in- cluding the machinery. Three rail- ways will use the structure, crossing on eight tracks. The turn-table will have a diameter of 80 feet, and the bridge will be swung in one minute, probably by electric power.

It is stated by one of the heads of departments of the London and North- western Railway that that company issues yearly fifty tons of railway tickets.

DIVIDEND NOTICE.

Use for Scrap Hica.

C. H. Mitchell, before the Ontario (Canada) Mining Institute, said that by taking the scraps or waste pieces of mica and subdividing them as finely as possible, and then quilting them be- tween galvanized wire netting, that we produce a fireproof mat, flexible and clean, and a non-conductor of heat, that makes a very good covering for boilers, steam pipes, etc. It will be noticed that all these flakes are ribbed or corrugated, the object being to in- crease the number of dead air spaces in the mat, and also to add to its bulk without increasing its weight. The finer we are able to divide these flakes the more eft'ective they become, as each one in itself is an efilective non- conductor.

The mats, or quilts, are not only fire- proof, but are flexible and elastic, which is a most valuable feature, as they wilt expand or contract with the iron or steel they cover without craek-

The German Savings and Loan

SOCIETY, 526 California Street.

For Uie hair year ending June 30, 1897, a dividend has been declared at Ihe rate of Four and twenty- huudredths (4.20) per cent per annum on Term De- posits and three and lifty-hundredths (3.50) per cent per annum on Ordinary Deposits, free oi ta.xPS, payable on and after THURSDAY, July 1st, 1897 CEO. TODRNY, Secretary.

port ^ayne £lectric (Corporation,

DIVIDEND NOTICE. San F="ranoIscoSa wings Union,

532 CaUfornia Street, Corner Webb. For the half year ending with the 30th of June, 1897, a dividend has been declared at the rate per annum of four and two-tenths (4.3) per cent on Term Deposits and three and five tenths (3.5) per cent on Ordinary Deposits, free of taxes, payable on and after THURSDAY, July 1st, 1897.

LOVELL WHITE, Cashier.

British Columbia,

E. S. TOPPING, TRAIL, B. C,

Has prospects for sale in Trail Creek and the whole of the Columbia basin. Will buy legitimate stock and mines for investors. Will examine mines. Has lots for sale in Trail and Deer Park.

DEWEY & CO., Patent Agents, 330 Market St., San Francisco.

-MANUFACTURERS OF THE -

Arc Lighting, Alternating and Direct Current Incandescent Lighting,

Power Generators, Motors, Transformers, Instruments and Appliances.

CHAS. R. LLOYD, AQENT, 18 SECOND STREET, SAN FRANCISCO.

COBB & HESSELMEYER,

DESIGNING AND CONSULTING

A^e^chariical and Hydraulic

ENGINEERS,

421 yvl/VRKEX ST., - San Francisco, Gal.

WEST COAST^FTIEXICO.

WbHLER, BARTNING & CO., Mazatlan (Sinaloa), Mex.

Bankers, Importers, Exporters and Commission flerchants.

Representatives and Agents of the principal Mining Com- panies in the State of Sinaloa and the dependencies of the Pacific coast in the States of Durango, Chi- huahua, Sonora, Lower California and Jalisco. ORE BUYERS AND EXPORTERS. - MINING SUPPLIES.

I51n.igrlxt'is"\^r£ttorT^[7'li.oel-

The accompanying cut shows the general ar- rangement of Knight's Standard Water Wheel, of which there are hundreds In use In different States of the Union.

These Wheels are made from 3 feet to 6 feet In diameter, from 10 to 1000-horse power, and adapted to all heads and purposes.

"Wheels Inclosed in Iron cases, from 6 to 24 inches.

Wheels tor electrical power can be furnished with or without Governors Highest regala- tlou guaranteed.

For full particulars, send for descriptive catalogue.

Address all communications to KNIGHT & CO., Sutter Creek, Cal., or, RISDON IRON WORKS, Agents, San Fran- cisco, Cal.

MISSION ST.

MANUFACTURERS OF -

IjFl

FRANCISCO, CAL.

tfiON& STEEL

i^m': js^^^gf L^i

Air Pipe, Concentrator Rolls, Galvanized Tanks, Spiral Leader Pipe,

AND SHEET METAL WORK OP EVERY DESCRIPTION. Largest and Best Equipped Factory in the West. Correspondence Solicited.

MARSH STEAM PUMP.

Count Its Moving Parts

as Shown Dark In the Cut. Only Six.

ABSOLUTE ACTUATION AND REQULATION. PATENT SELF-QOVERNINQ STEAH VALVE. PATENT EASY-SEATING WATER VALVE. NO OUTSIDE VALVE GEAR.

Maximnm ol Strength, Simplicity and Service. Minimum of Weijlit, Wear and Waste.

Simonds Saws. Dodge Wood Split Pulleys

Bickford & Francis Leather Belting.

Cleveland Rubber Co.'s Rubber Belting and Hose.

Orant Corundum and Detroit Emery Wheels.

ONLY THE BEST.

SEND FOR CATALOGUE.

SIA^ONDS &FK\AI CO.

31 Main Street San Francisco.

1\/IINE i^ELL

IQNALS.

Adopted, Used and In Force in Ac- cordance with State Law.

CjrOB THE CONVENIENCE OP OUR READERS IN THE MINING COUNTIES WE PRINT IN ■^ legal size, 12x36 inches, the Mine Bell Signals and Rules provided for in the Voorhies Act, passed by the State Legislature and approved March 8, 1893. The law is entitled " An Act to Establish a Uniform System 01 Mine Bell Signals to Be Used in AU Mines Operated In the State ol Oalllornia, (or the Protection ol Miners." We (umish these Signals and rules, printed on cloth o as to withstand dampness, tor 60 cents a copy. MINING AND SCIENTIFIC PRESS, 330 Markei St.. San Francisco.

Mining and Scientific Press.

July 3, 1897.

INDEX TO VOLUME LXXIV

— OP THE —

Mining and Scientific Press.

FROM JANUARY TO JUNE, 189?.

Page.

AbandODment of a Social Experiment .177

Acetylene, Its Exploslbility ' 31

Advertising Mediums 312

Age or tbe Gold Bearing Gravels of theSlerras, loO

Air, A New Power of 348, 413

Compressed, for Mining, 412, 436,456, 478,501, 520

Alabama Mineral Products 335. 307, 475

Alaska 538

Alaslia-Treadwell Mine 3, 379, 343, 515

Alaska's Gold Yield, '96..... 27

Alaska Mines. 110, 111, 131, 155, 171, 195, 231, 233, 238, 255. 323, 327, 370, 414, 454, 474, 498.

Transportation Co. Stories 333

Alaska-Mexican Mine 379, 387, 471, 495

Alcobol Effect on Animal Life 500

Alien Land Law 278

AUis, E. P.,Co 63, 159

Alternating Current Dynamos in Parallel 500

Aluminum Acoustics 96

For Naval Use 96, 137, 216

Manufacture 30, 197

Reducing Metallic Oxides 136

Substituted for Copper 343

New Uses of 550

Amador Co., Cal., Mines, 6, 34, 50, 76, 94, U4. 131,134, 154, 194, 214, 238, 262, 286, 306, 326, 346, 370, 390, 414, 434, 454, 474, 498, 518, 546.

American Flat Drainage 93, 112, 189, 231, 363

Institute Mining Engineers 17i

Machinery, Wby It Leads 237

Americans in British Columbia 170

Anaconda Mine 279, 495

Ancient Coin Alloys .359

Metallurgy 117, 259

Andes, Ascension of 308

Anthracite Coal Importations into S. F 33

Anti-Debris Association 3B6, 416, 450, 451

"Are Rocks and Pebbles Organic ?" 500

Areas of Disease 500

Arid Regions, Temperature of 260

Arizona Mines, 7, 35, 51, 77, 95, 111, 115, 134, 155, 174. 191, 195, 215, 238, 262, 307, 323, 327, 347, 371, 388, 391, 414, 435, 455, 476, 499, 519.

♦Arrastras 341

*Artesian Wells 517

Armor Plate Rolling 284

Artificial Light 260

Asbestos Exports, Canada, '95 3

Ascending the Andes 308

Asphalt, Cost of 451

*Asphalt Products. 469

Assessment Work on Locations 342

Asylum for Disabled Miners 2

Atlantic Mining Co., Michigan 255

Australian Gold Product. '96. , .363, 431, 451, 453, 471

Mines 1. .71, 215, 319, 333, 435, 451, 471, 548

Mining Swindles 3

Aztec Mss. Pound in Iowa 477

Bacteria 261

Bank of France's Charter 97

" Barney Barnato" 524

*Beach Sand Mining 405

*Big Horn Hot Springs 493

Bimetallism in Different Nations 261

*Birch Two Stamp Mill 93

Bismuth Refined Electrolytlcally 368

Blank Forms for Quartz Location Notices 410

Boiler Scale, Removing 32

Boilers, Figuring Their Capacity 176

*Bolthofr Gear and Friction Hoist 328

Bolivian Mines 232

Bowie, Aug. J 170

Bowers, A. B 129

Brass and Its Manufacture 117

British Inventors 542

British Shipbuilding in '96 53

British Columbia Mines, 7, 35, 47, 50, 77, 95, 111, 115,

129, 131, 134, 151, 153, 154, 175, 190, 191, 195, 211,

214, 231, 338, 255, 263, 279, 287, 303, 305, 306,323,

327, 343, 347, 363, 371, 387, 391, 407, 415, 435, 451,

454, 471,474. 495, 499, 515, 518. 547.

Minister of Mines' Report 305

Ore Shipments 27, 47, 171, 305

British Caiiitars New Field 362

British Guiana Mines lU

Broken Hill Proprietary Mine (Australia), 219, 323,

• 451.

Building.Stonea of California 150,277

Butte Co., Cal., Mines, 6, 34, 50, 76, 91, 114, 134, 151,

154, 174, 194, 214, 238, 263, 287, 306, 323, 326, 346,

370, 390, 415, 434, 474, 518. 546.

♦California Asphalt Products 469

Building Stones 150, *377

Bullion Product 362

♦Chrome Ores 301

Climate 219

Diamonds 313

Deep Mining 26, 132

Milling and Mining Statistics 473

Miners' Association, 151, 231, 254, 255, 279, 341. 363,386,430, 471,515.

Mines Every Issue

Mining Before 1849 U2

Mining Incorporations, '97, 14, 33, 79,139, 159, 179, 199. 219, 242, 265, 351, 459, 503, 554.

Mining Law ..302, 494

'*Onyx 449, 470

♦Petroleum 321

Products for '96 33, 362, 406

♦Quicksilver Mines 253

School Lands 230

♦Water Power 537

California's Electrical Enterprises 521

Geology and Mineral Deposits, 132, 152, 173, 193. 213.232. . . - , ,

Mineral Products, '96 387 406

Calaveras Co., Cal., Mines, 6, 34, 50, 76, 94, 1 14, 134 151, 174, 194, 214, 238, 255, 262, 279, 306, 326, 346. 370j 390, 414, 434, 454, 474, 498, 518, 546.

Calcium Carbide 136 550

Calendar, A Wonderful 69

Calibration of Current Meters 368

Calumet & Hecla, Mich., Mine, 3, 32. 47, 191 407 471. 495.

Caminettl Act 494

Canadian Tariff 495, .543

Gar Building in the United States 285

Wheels, New Method of Dressing 361

Carbons for Electrolysis 236

Carbolic Acid for Tempering Steel 137

Carson River Dredging Co., Nev 3 171

Cash in New York Banks 211

Cast Iron, ElTect of Concussion on 31

For Finishing 329

Novel Use of 237

Cataphoresis ., 32

♦Center Crank Throttling Engine 116

♦Centrifugal Pump and Engine 71

Cripple Creek, Colo., Mining Practices 4

Ores Slh 471,515

Output 27, 47, 255, 323, 471, 495

♦Illustration.

Characteristics of the El Dorado Gold Belt 233

Change of Policy i30

♦Champion Mine, Nevada City, Cal A' a J,

Chinese and Mines 130, 469

Gold Mines ^69

Importation of American Luimber ■i^'J

Cheap Milling and Mining ■■473

Christy, S. B., on Cyanide 110,256

Chemical Industries : Electricity's Place There- in 176

♦Chrome Ores ■ ■ ■ -301

Cinnabar In British Columbia 131, 407

In Nevada ^o7

Claims Discovered by Tunnel Marking 537

Clouds, Formation of -176

Coal in Mexico '^93

In Nevada 67, 133, 211

Limit of Consumption 217

Production, U. S., '96 523

Product of Hungary, '96 387

*Coke Ovens of El Moro, Col 259

♦Cochrane Water Heaters and Receivers 209

Coinage of Different Countries 261

♦Collapse of a Pair of Corrugated Furnaces 328

Colombian Gold Fields 257

Colville, Wash., Reservation 131

Colorado Bureau of Mines 47

Concentration Methods 408

Iron Works 480, 503

Mines, 7, 35, 51, 94, 114, 135, 155, 171, 195. 211, 215, 238,255,263,279,287,307, 323, 327, 347,371,387, 391, 415, 435, 451, 455, 471, 475, 499, 515, 518, 547.

Mine Leases 47

♦Railroads 149

Stamp Practice 49

Tunnel and Mine Owners 91

Colorado's Deepest Mine 407

Color in Light : I Ls Philosophy 156

Comets ■ ■ 520

Coming Rush to Alaska 110

Comstock, Nev., Lode 3,47, 303, 363

Tailings 171

Compound and Shunt Wound Genera tors 284

Compressed Air 392

For Mining Purposes. . .412, 436, 456, 478, 501, 520, 549.

In Steam Engine Cylinder 31

A Property of 96

Locomotive 53

♦Congress, Ariz., Mine and Mill 367

Continents Rising and Lowering 284

Congressional Library 216

Conservation of Intellectual Wave Forces 366

Continuous Rails for Street Railroads 216

Concussion, ElTect of, on Cast Iron 31

Concentration Methods in Colorado 408

" Concentrates " Every Issue

♦Con. K. C. S. &R. Co 235

Copper in Mexico 407

In Oregon 171

Mine, An Arizona 543

Mines of Nevada 70, 279

Mines of Slnal 345

Price and Sales of 171,431

Prospecting 131

Refining by Electricity 53, 192

Mining's Future 470

Statistics for '96 62, 323

Statistics for '97 407

Supply 500

Visible Supply of 151

♦Copper Queen Mine, Arizona 388

Cost of Drift Mining 213

Of Railway Building Sixty Years Ago 157

Of the Past and the Present 235

County and District Recorders 514

Crawford, J. J 254

Current Copper Statistics 63, 407

Cuban Mines 191, 258

Cyanide of Gold, Solution and Precipitation, 4, 29, 49, 72, 92, 112, 196.

♦Apparatus 542

Process In South Africa 131 , 515

Process, Notes on 256

Solution : Precipitation of Gold Therefrom, 212, 515. Cylindrical Car 53

Debris and Dredger Bills 230, 302

Commission 3, 171, 230, 302, 386, 431, 471

Question, .46, 66, 71, 130, 190, 230, 386, 416, 450, 451

Responsibility for 28,66, 71,416

Deep Shafts 133, 385

Shaft Sinking 89

Mining in Cal. ■ . . ■ 26, 89, 132, 254, 385

Mining in Australia 171

Mining and Stock Gambling .254

Sinking, Faith in 385

Deepest Bore Hole 74

Well 436

De Lamar, Nevada, Mine 3, 211, 231, 363

Idaho, Mine 279

Delicate Instrument, A 261

Denver Convention 386,431,495, 514

Determining of Carbon in Iron 73

Diamonds In California 3i3

Diamond Making 30, 392

Dingley Tariff Bill 279

♦Direct- Acting Hoisting Engines 411

Direct Current Transformer 550

District Recorders and the New Mining Law.. .386

♦Ditch Construction in Idaho 173

Dividends Paid by Mines in' 97', 14, 43, 55, 79, 99, 139

♦Double Tooth Steel Dog 96

♦Cylinder Hoisting Engine 116

Trolleys for Street Cars 368

Drainage of American Flat 92, 112

Dredging the Rivers 137, 230, 496, 545

In New Zealand 213, 363

♦In California 523

Dressing Car Wheels, New Method 261

Drift Mining Costs 213

Drum Lummond, Montana, Mine 323, 407

Duty on Onyx 449,470

Dynamite, How to Thaw 153

Dynamos. Four Largest 33

Earthquake Knowledge 2&1

Earthquake Motion, Transmission of 31

Eastern Chinese Railway 137

Mining Investors 470

Economic Element in Technical Education 338

Edison on Diamond Making 30

Efliciency of the Boiler Grate 9

Elasticity of Iron 73

El Dorado Co., Cal., Mines, 6, 34, 50, 76. 94, 114, 134, 154, 174, 194, 233, 238, 262, 286, 306, 326, 346, 370, 390, 435, 474, 518.

Gold Belt 233

Electrification of" Air by Roentgen Rays 156

♦Electrically Propelled Sawmill.. 25

Electrolysis, Carbons for 236

Electric Arc Light's Atmosphere 260

Energy from Coal 97

Generators, Largest 96

Generators, Compound and Shunt Wound 284

Heating and Cooking 260

Light Generated from Car Axles 260

Light from the Heavens 457

Light When Discovered 550

Locomotive 32, 52

♦Mining Hoist 89

Motors Driving Machines 348

♦Motors in Railroad Shops 521

♦Multipolar Dynamo 176

Power In Gold Mining 137

Power Co., Ogden, Utah 117

Ray's Polarization 284

Railways in U. S 176

Ship Lighting 156

Page.

Smelting of Metallic Ores 497

Traction in Paris Sewers 97

Tramways in Paris 260

Transmission Association 524

Vs. Water Power 233

Voltages 236

Electrical Machinery Business 260

Conductivity of Ether 436

Development in Africa 137

Designer 32

Extraction of Ore 74

♦Heating of a Building 348

Installation at Mlddletown, Conn 196

♦Mining Hoists 308

"Phase" 216

Production of Ammonia and Nitrides 74

Redning of Copper 53

Separating and Refining of Metals 137

♦Street Car Motors 45

Traction Under Steam Railway Conditions. 74

War Devices 176

♦Experimental Electrical Railroad Work 329

Electro-Metallurgy's Future 392

Capillary Light 436

♦Electricity Displacing the Locomotive 477

And Quacks 196

And the Growth of Plants 550

Direct from Coal 216, 226

From Carbon Without Heat 336

In Machine Shops 500

In Safe Breaking .' 260

In Surgery 74

Its Place in the Chemical Industries 176

To Sacramento, Cal., from South Yuba

Water Co 14

♦El Moro, Col.. Coke Ovens 259

♦Engine Lathe 156

English Promoters 130, 174

Armor Plate Rolling 284

Entry of Oil Lands as Placers 278

Envelopes Lined With Tinfoil 236

Esmeralda Co., Nev., Coal Fields 133

Etna Con. Q. M. Co.'s Report 363

Evans, Geo. H 3^32

Expert Testimony no

Exploration Co. of London 47, 151, 303, 363

Exports of Gold and Silver '95 and '96 9

Export Duty on Ores ifl

♦Extravagance in Road Work 229

Extracting Ore by Magnetism 74

Faith in Deep Sinking 3oS

Farmers and Miners Uniting 82

Fast Sinking of Shaft 211

Railroad Time 285

Time on Snowshoes 323

Fine Measuring Instruments 284

Filtration, Improved Method of 196

♦Finlayson Wire Rope Tramway 544

First English Armor Plate Rolling 284

Quartz Mill in Montana 343

Fluid Air for Industrial Uses 413

Foreign Capital 90,170,211

Investments in Copper Properties 311

Forms for Quartz Location Notices 410

Formation of Clouds 176

Foreign Investor's Opportunity 406

Forest Reservations and Mining, 258, 278, 283, 343

Reservations, New 283

Forestry Commission Report 342

Fort Wayne Electric Corporation 87

♦Four Cycle Gas Engine 129

♦Fraser & Chalmers 9, 459

Eraser River Dredging 361

Fresno Co. , Cal., Mines 286

From Mine to M:lnt 416, 433, 453, 473, 517.

541.

Fruit Stones, Economic Value of 285

Fulton Eng. &S. B. Works 395,480,503

Future of Electro-Metallurgy 392

Of Copper Mining 470

Gallon, What is a? 261

♦Gallows Frame, New Style 369

♦Gas Engine, Four Cycle 139

Gas Engines for Mining 392

Geology of California 132, 153, 173, 193, 313, 232

Of Nevada City, Cal., District 8, 29, 48, 70

Of the Sierras 190

Geological Survey and Mining Bureau 46

Geologic Mapping of the Mother Lode 53

Geologic Marvel 284

General Electric Co 14, 42, 329

Generators, Compound and Shunt Wound 284

Giant Powder, How to Thaw 153

Gilsonite in Utah in, 407

Glacial Erosion 550

Gold Product '94. '95, '96 71, 362, 470, 471

And Silver Imports and Exports 149

And Silver Output U. S.,'96 471

And Silver Output of the Northwest, '96.... 4/1

Bearing Gravels of the Sierras 150

Belt of the Lower Colorado River. 389

Dredging 496

Exports from British Guiana 451

Fields of the Force River, Colombia 357

Fields of Northern California 367

Holdings of European Banks ill

In Black Sand 472

In the Ocean 117

In Australia 219,255.451, 453

Mining Convention in Colorado, 279, 386, 495, 514

♦Mining in Siberia 280

Mining in Mexico 30

Mines of Nevada State 2

Miners' Convention 303, 386

Output for 1896 1, 25, 363, 386, 470, 471

Oie Reduction 2, 171

Ores, Treatment ofPyritic 282

Precipitation from Cyanide Solutions. .212, 515

Product of Cal. by Counties, '95, '96 362

Product Australia, '96 .363, 453

Yield Increasing 386, 406, 470, 471

Yield of South Africa, '96 387, 471

Yield of Victoria '96 111,323,451,453

Golden Feather. Cal., Mine 171

Good Roads to the Mines 190, 209, 229

Goodyear Rubber Co 87

Government and Mining 170

Estimates and Prices 275

Telegraph Lines 369

Grand Central, Mexico, Mine 343

Grain Export to China and Japan 480

Gravel Fields of Northern California 113

Mining in New Zealand 131,213

Mining in Siskiyou Co. , Cal 131, 385

Mining Failures 254

♦Mining Methods 385

♦Tailings Lift 542

Gravels Auriferous, of the Sierras 150

♦Grass Valley and Nevada City, Cal 324

Greatest Railroad Feat 197

GreatNorthern Gold Field 367

Gwin Mine, Calaveras Co., Cal 1

Gypsum Produced In Nova Scotia in '96 27

Halftone Engravings, How Made 32

Hammers, Antiquity of 285

Hand Auger and Drill in Prospecting Work 452

♦Handling Coal and Ashes Automatically 215

♦ Handling Boulders in Hydraulic Mines 513

Hard to Figure Out a Rule 261

H. P. of a Steam Boiler 329

Heat of the Sun 284

♦Heating a Building by Electricity 348

Herman, Blnger 199

High Electrical Voltages 236

Highest Buildings in N. Y. and S. F 275

Page.

High- Frequency Currents 436

Hospital for Disabled Miners 2

Hospital Car 500

♦ Hot Springs in Wyoming 493

House Organs 30

Hydraulic Mine Closing 48

Miners and the Cal. Association 254

Mining, Notes on. .304, 325, 344, 365, 388, 410, 433, 452,472,497. Hydraulic Pumping Engine 369

Ice Cutting In Wisconsin 337

♦Idaho Ditch Construction 172

Mines ... .7, 35, 51, 77, 95, 115. 135, 155, 214, 238, 255, 263. 279, 306, 327, 347, 370, 391, 415, 435, 455, 475, 499, 519, 548.

Mining Legislation 171, 323

Mineral Output 96, 363

Ignition of Coal Dust by Sun's Rays 500

Immigration Bill and British Columbia 190

Improvement in Steam Navigation .217

Imprisoned in Mexico 257

Iron, Carbon Determination Therein 73

Changes in its Elasticity 73

Felt. 549

Range of Mesabi, Minn 117

Industry of Cuba 258

Capped Riffles 453

Improved Pyrometer 236

Incandescent Lamps 136

Increasing Gold Yield 386, 406

Interesting Region, An 540

International Geological Congress 500

Index to Vol. LXXIII, Mining and Scientific

Press 10, 11

To Vol. LXXIV, Mining and SclentifloPress,564

Internadional Correspondence Schools 159

Inventor, A Successful 129

Instruments for Fine Measurement 284

Inyo Go. Mines, 6, 34, 50, 94, 134, 214, 286, 415, 474, 518,

546. Independent Driving of Machines by Electric

Motors 348

* In Other and Older Lands 408

Interdlfluslbility of Metals 96

Intellectual Wave Forces, Con.servatlon of 366

Is Foreign Capital Needed for American Gold

Mines? 26

Irrigation, Motors and Pumps for 551

Isabella, Colo., Mine 333

Janin, Alexis 5o

♦Agriculture 543

Japan's Gold Standard 191

Japanese Alloys 365

♦ Jeffrey Coal Mining Machinery 136

Joshua Hendy Machine Co 373

Judge Ross' Decision 494

Jupiter, Its Mass, etc 156

Kern Co., Cal., Mines.... 34, 50, 76, 114, 134, 154, 255, 286, 306, 390, 434, 495, 498.

♦ Klamath River Dredger 523

Kootenay, B. C, District 2, 153

Land Office and Petroleum 513

♦ Largest Electric Generators 96

Beet Sugar Factory 243

♦ Compressor Engine in Canada 501

Reservoir 216

Steamship 216

Law of Mines 345

Veins and Lodes "nV?*^^

Laws Framed by Miners 90, 301

Lawson, A. C 373

Lead in the Tariff 255, 279, 289

Lead, Price of 303

Lead Ore Importations 171

Leadvitle Strike 231

Leasing Mines in Cripple Creek, Colo 4

Leasers at Aspen, Colo 131

♦ LefTel, Jas. & Co 8

Legislative Committee Bills 66, 230

Le Rol Mine. B. C 303

♦ Leyner Rock Drill 374

Lighthouse, Most Powerful in World St

Light and Magnetism 284

Limitations of Government in Water Power

Plants 478, 549

Liquid Air an Agent of Research 456

Local Capital for Mining 494

Locations, Mining 230, 301, 342, 363, 386, 494, 514

Location Notices, Forms for 410, 514

Locators, Warning to 470

Location Boundaries 494

Locomotives in War 31

Locomoti-e Driving Wheels, " Hammer Blows '"

550

of.

.301

Lode and Mine Law

Longest Turntable 38&

Longest Long-Dlstance Telephone 9

Suspended Wire 177

Longevity in Southern Latitudes 348

Los Angeles Co., Cal., Mines 306

Loss in South African Mining Companies 3

Loss to California by Hydraulic Mine Clos- ure 48,71

Loss to the Farmer Through Debris 71

Lower California Mines 155, 475

Madera Co., Cal., Mines 34

Magnetism and Light 284

Making Large Diamonds 392

Mammoth Globe at Paris Exposition 177

Manganese Ore Production 303

Manganese Ore Reduction 52

Manufactures. Reduction in Cost 156

Marble Belt 305

Mariposa Co., Cal., Mines, 6, ai, 50, 94, 151, 154, 211, 262, 306, 399, 498, 518

Mariposa Grant Purchase 151

Market Reports Every Issue

Marking Claims Discovered by Tunnel 537

Measure of Mining Prosperity 538

Measuring the Earth 73

Measurements Pine, Instruments for 284

Mendocino Co., Cal., Mines 262

Mercur, Utah, Dividends 96, 37

Meridian, How to Determine 177

Metal, A New 237

Metallic Carbides 53

♦Methods of Gravel Mining 386

Metric System 53, 236

Metric Conversion Table 74

Mexico's Gold Mines 29

♦Mexican A dobe and Oven 259

Census 418

Exports of Precious Metals 363

Importation Regulations 14

Mines 135, 263, 455, 515

Specie Imports in '96 27

Mica in South Carolina 28

Michigan Mines 135, 255, 279

Mlcrophonograph, Dussand 436

Mine Cos ts of the Rand , 538

Mine Management 430

Mining Bureau 303, 433, 450

Mining Titles on Mexican Grants 538

Mint, U. S , Coinage, April, '97 407-

Mine, Lode and Vein Law 301

Inspectors 150

Mines, Why Not Sold 56

Mine Surveys, Errors In 9

Miners' Hospital 2

Miners' Inch 169

Miners and the Funding Bill 46, 87

July 3. 1897.

Mining and Scientific Press.

Page.

Mtoeral Land Bill. 07. 80. 151. 171, 2&4, ^6. 279, 3£i.

312. 5M. 61^ MlDlDC aod University Extcnsloo ^'

And Ratlwiiys 113

At Great Depths 97

And GovernmeDt 170

And Forest ReservattODS iS8

By Clitnese 130

•Heach Sands 4U5

By a Novel Method 31

bureau and Geologioal Survey W

Uureau W, 189. I03. 2M, 265, 301. 321,513

Corporations. Power to Purchase Property. .210

Corporations' Reports 2lU

Corporation Directors 110,210

Claims iind State's Land 130

Degrees and Non-Rt-sldents 210

Dividends, 'ii?. H. -13, 5S. 79. 09, 139. 159. 179, IIW. 21W. 212, 2ft.\ taiO. 3IU, 331. 3Sl, 395, 459. fi03, 651.

Exptrrt on Colorado River SO

Hydraulic. Notes on. 3W, 325,341,385,388. 410,

432. 452. 472, 407. Industry of Great Britain and Ireland, 05, 60 Inoorporalloos In California in \n. 1 1. 55, it'. 17'J.

199, 219. ai2. 2«5, 2W), 310. 33\. 351, ;W5. 4.VJ. 503. LeRtslation. I, 3, 27. 4fl, 66. 67. W). IK). UI, 110. HI, KiO, 131. 150, 151. 170. 171. 189. 230. 25-1, 27H, 3UI. 302. 303, 322, 386. 430, 514. Laws. Revision of. 1.3,27, 47.66. 67. MJ. 90. 91. IIU, HI, i;W, 131, 160, 151, 170, 171, 18t), 230, 264, 278 :«1. 302. 303, 32^;, 386, 430.

Location Boundaries 494,511

PnJ^pe^llT, Measure of 538

Shan- Market Every Issue

Willi Compressed Air. .412, 430, 456, 478, 601, 520

Mint, U.S., Report 322

Mineral Lands Patented by the Railroads 514

Productions. U.S., "90 471

•Paint 449

Deposits and Geology of California. 132, 152, 173, 193.

Production, Germany, '96 387

Proilucts of California, '96 387, 406

Mineralogist's Report 27

M Inoralok'lsi. Now State 179, 254

Mine Cage, Improved 137

Laborers and Supply Men 80

Inspectors l-'JO

Jumpers' Paradise 150

Robberies 210

Miners' Rights of Way HO

Modern Surveying Instrument 71

Motors and Pumps for Irrigation 551

Mono Co.. Cal., Mines 34,94,262

Montana Mines, 7.35. 50. 77, 95, 115. 135, 155, 175, 195. 214. 239, 263, 303. 306. 327, 347, 371, 301, 415, 435. 455. 475,405. 408. 515, 519. &17.

Montana's Mineral Output, '06 27, 451

Montana Mineral Land Commissioners "211

Mother Lode, Geologic Mapping 52

Mountain Copper Co., Shasta Co., Cal., 27, 91, 111, 131, 32J.

Mount Morgan Mine, Australia ..131

Mulr, John 278,283

Mud Roada to the Mines 210

Mysteries of Nature of Light and Electricity. .413

Napa Con. Q. M. Co.'s Reports 383

National Miners' Bureau of Information — 153, 302

Necrological Statistics 74

Neighborhood Swindle 430

•Nevada City and Grass Valley, Cal 324

Nevada Slate Mines, 6, 31, 50. 77,94.114.154, 175, 101, 238. 262. 287. 306, 326, 316, 370, 390, 414, 435, 451, 474, 408. 515, 518, 540, 547.

State Gold Yield, '96 27

Coal Fields 133

NevadaCo.,Cal.. Mines, 6, 34, 50. 76. 94, 114, 134, 154, !04, 214, 238, 262, 286, 306. 326. 346, 370, 300, 414, 435. 451, 454, 471 , 474, 408, 518, 546,

City District Geology 8, 29, 48, 70

Nevada's New Mining Law 322

New Mexico Miners* Association 231,305,515

Mines, 7. 35, 51, 76, 115, 135, *140, 155, 195, 263, 306, 347, 371. 391. 415, 455, 474. 515, 519. 548.

New Elkhorn, Montana, M. Co.'s Report 407

New Element 521

New Field to be Opened 342

New Forest Reservations 283,342

New Mexican Mining Legislation 191, 255, 4()7

New Move of the Anti-Debris Association 450

New Metal, A 337

New Mining Law and District Recorders 386

New Mining Law 4.30

*New Quartz Stamp 304

New Road Bills 302

New Signaling Light oOO

New South Wales Mines 3

*New Style Gallows Frame 369

New Zealand Gravel Dredgers 212

Niagara Falls, Age of 8

♦Niagara Type of Turbine 8

Nickel Production in '96 67

Nickel Imports for '06 27

Nickel. Proposed Duty on 47

North Blo^miield Decision 494

North Carolina Gold Mines 5

Nobel, Alfred, Bequests 136

J* otes on the Cyanide Process * — 256, 496

On Hydraulic Mining, 3:4, 33a, 344, 365, 388, 410. 432, 452. 472, 497.

Novel Method of Mining 31

Use of Cast Iron 237

Engineering Work 500

♦Appliances for Hydraulic Mining 513

Non-Residents and Mining Degrees 210

Ocean Telephony 138

Occasionally Forgotten 216

01 1 Exports from Russia in '96 157

Fed Twist Drills 261

Lands Entered as Placers 278

In Southern California, 33, 47, 151. 191, 311, 303. 331.

Production of California in '96 67

Olive Green Squadron 177

Oldest Iron Bridge 97

*01dest Mining Communtty in the U. S 149

Opportunity for Foreign Investors 406

Ontario. Canada, Gold Yield 151

Onyx. Duty on 449

Oranges, Southern California 331

Oregon Gold Yield for '86 451

Mines, 6, 34, 50, 77, 94, 115, 134, 154, 174. 194, 314, 238, 279, 387. 306, 323, 346, 370, 391, 414, 435, 454, 474, 498, 515, 519, 548.

Improvement Co 219

Short Line 242, 265

Mineral Land Bill 323

Ore Tests, Simple 283

Ore Shipments in Bond Through U. S 131

Ore, Atomic Process 153

Ores, Treatment of Pyritlc Gold 282

Origin of Petroleum 260

Outline of the Geology of California With Reference to Its Mineral Deposits, 133, 152, 173, 193. 313, 232.

Overhead Trolley 413

Oxidizing Steel and Iron 116

Ozone. Study of 550

Packing of Goods tor Chile 216

Packing Goods for Mexico 309

Panama Canal Co., New 285

Pan Amalgamation, Theories of 344

Passenger Coaches, Copper Finished 316

Passing of District Rules and Regulations. 322, 386

Patents, Notices of, 23, 43, 82, 103, 133, 143, 182, 202,

222, 247, 270, 294, 314, 3»1, 354, 378, 403, 419, 447, 462,

483, 503, 530, 563,

Patents, Number of 261

Page.

•Peltoo Water Wbeel Co 101

•Petroleum in Califumiu 321

Ptrmauence in Depth of California Gold Mines. 473 Percentage of Gold and Silver Id California

Gold 407

Petroleum, Origin of aeo

Petrlilte 196

" Phase," What It Is 216

Photography In Natural Colors 413

PhotograpblDg Flying Bullets 456

Pfg Iron Production 197

Placer Co.. Cal.. Mines. 3. M, 50. 76. 94, 114, 134, 174, 191, 214. 238. 262, 286. 306, 3M. 316. 370, 390, 414, 431, 474,408.518.516.

Placer Mining in Washington 171

Placers on the Yukoti 171

Platinum 392,411

Production of. in Russia 640

•Plowing Methods In Egypt and India 4138

Plumas Co.. Cal.. Mines. 6, ai. W. 91, 1»1, 154, 174. 194. 214. 238.286, 327, ^6, 370, 30O. 404. 434, 4W, 474, 408, 546.

I'olar Exploration 328

Polarization of liiectrlo Rays 28'1

•Portable Hoist lug Engine 9

Powder Co.'s Agreement 231

Power Lost In Belt and Shaft Transmissions.. .116

Power of Directors of MUilug Corporations lio

Power From Ocean Waves 34y

Practical Notes on Hydraulic Mining, 304, 325, 344, 365. 388. 410. 132. 402, 472. -197.

Practicable Treatment of Pyrlllc Gold Ores 282

Precipitation of Gold by Zinc Thread From

Cyanide Solutions 213. 406, 515

Problems of the Rand Ibli

Product (by Years) of Load, Copper. Silver and

Gold. West of Missouri Rivor, From 1870 to

1896, Inclusive 76

Product of Gold and Silver in Mexico. 187O-1806. 76

Pro^Toss in Gold Ore Reduction 2

Proposed Corporation Bills 00

Proposed MiulDg Laws 37

Prospector. The .322,342

Protection for Prospectors 210

Prospectors' Flight Northward 170,322

Prospectors' Protection / 310

Pueblo, Colo.. Smelters 47

Pulleys, Fast and Loose 330

Pyritlc Gold Ores, Treatment of 282,5-11

Pyrometer, Improved 236

Quacks and Electricity 196

♦Quadruple Expansion, Single Crank Mill En- gine 369

Quartz Location Notices, Forms for 410

♦Stamp, New 301

Quicksilver, How to Clean 405

*Mlnes of California 253

Mining in Spain 363

Outputof U. S.'Oe 27

Quincy, Mich., Mining Co 191, 3il

Railroad Patents to Public Lands 3

Railroad's Last Move 342

Needed 2,59

Railway Mileage of '96 in U. S 9

Water Scoops 176

Railways and Mining 113, 259

Rainfall and Temperature 63

RandDist., South Africa, Dividends Ill

Mine Cost of 548

The, in 1896 34b

Rand Drill Co 87

Randsburg, Cal., Mines 191

Rapid and Slow-Drop Stamps in Colorado. . .49, 152

Tunneling 4H

''Rare Earths" 411

Rats in the Utica Mine 211

Reckoning Time Simplified 237

Recorders, County and District 514

Reduction in Cost of Manufacturing 156

Refining Bismuth by Electrolysis 368

Refractory Clays 156

Removal Notice 514

Reports of Mining Corporation 210

Report U. S. Mint 322

Reproduction of Color ,. U7

Rescinding Forest Reservaliions 191

Reservoir sites 17 1

Responsibility for the Debris 27, 66, 71

Reviving Abandoned Mines 449

Revolutionizing Plant Growth with Ether 466

Rico-Aspen Tunnel Decision 407

Rights of Way for Miners.-.. HO

Risdon Iron Works 150, 603

River Dredger 137, 523

River Dredging for Gold 496, 623

In New Zealand 363

Riverside Co., Cal.. Mines 94, 114, 286.451

Miners' Meeting ill

Roberts- Austen's Discovery 96

RocU-Drilliog Contests 515

*Rogers' Crushing Rolls 433

Rope from the Ocean 53

Rossland.B. C, Mine Output '96 47, 515

♦Rubber Belt Conveyors.. 97

Russian Mines 279, 380

♦Mining Methods 280

Oil Exports in '96 157

Russia's Proposed Waterway 285

S SanBernardinoCo., Cal.. Mines. 6,50, 76, 94, 154, 194,

362, 286, 336.

Sand Blast as a Cleanser 96

San Diego Co., Cal., Mines... .34, 60. 94, 154, 174,362,

286. 306, 326, 346, 389, 391, 414, 434. 454, 474, 515, 518.

Sandpaper 285

San Francisco Copper Co 211

Lumber Trust 265

San Luis Obispo Co Mines 301

Santa Fe Route 265

*Sawmill Run by Electricity 25

Saw, New Crosscut 309

School Sections and Mineral Lands 343

Scientific Meetings 97, 275

Secretaryship of Mines and Mining 68, 67

Secret Japanese Alloys 385

Selby. Prentiss 119

Self-propelling Fire Engines 360

Shaft-Sinking Accounts 416

Shall the Debris Question be Reconsidered?.... 46 Shasta Co.. Cal., Mines, 6, 34, 50,94, 114, 134, 154, 194,

214, 3.38, 262. 286. 306, 326, 346, 370, 300, 414, 434, 454,

471, 474, 495, 498, 515, 518, 546.

Shasta Lumber Co 331

Shears, Minute 549

Ship Canals, Length of 9

Shutting Off S team Instantly 285

♦Siberian Gold Mining 280

Mines 28, 280

Sidereal Clock 285

Sierra Co.. Cal., Mines.. ..34, 50, 94. 134. 154, 174, 194,

214, 238. 262, 386, 346, 370, 390, 454, 474, 498, 518.

Sierra Pacific Railroad 47

Railway Company 503

Silicbromite 176

Silver Product of Cal., '96, '95 362

With the Gold 416

Simple Ore Tests 283

Siskiyou Co., Cal., Mines. ...6, 34, 50,77, 94, 114, 134,

154, 174, 194,214,231,238,262,286,306, 336, 346, 370,

390, 414. 431, 454. 474, 495, 498, 518, 547.

Skiff Mining Expert 69

"Slip of the Wheel;" What It Means 389

Smelter at Kossland, B. C 3

Smelting Industry in Utah 3

"Projects " HI

♦Smuggler-Union Mine 65

Solution and Precipitation of Cyanide of Gold, 4,

29,49,71,93, 112,496.

Page. Some Colorado CoQccDtratlon Methods 408

South African Gold Yield '96 27, isi' 387 471

Mines.. 189,231,803.307, 323, 47 1! 648

MinlocCost ^j

South Africa's Steady Yield !'*"'410

South Dakota Mines 7. 35, 51, 77. 95, 115 Isi 135

155, 175. 105, 215. 3.'il , 230. 263. 327, 317. ■ ■ •

South Dakota's Gold Yield '96 27

•Soulhern California Mines ,.'!'.!'."."! "430

Power Co 265 503

Southern Paclllc Co.'s Earnings '96 '. 14

S. P. Co. and Mineral Lands 91

Spanish Quicksilver Mines ]'.'. '363

Speciographlc Analysis 413

Speculative Values of Mines 430

Spltzkasten and Settling Tank 2M

Spontaneous Combustion 581

•Stadia Surveying 93

Stamp Mill Practices 5

•Stamp, New Quartz 304

State Mining Laws. .1, 3, 27. 47, 66, 67,89,90.01, 110

State's Lands and Mining Claims 130, 190

Slat isticians and the Gold Yield 47o

•Street Car Motors 45

Steam Boiler's Horse Power. S2ii

To Shut On Instantly 28.'.

Steel Alloys, Hardened 237

•Frame Handlers 7.1

Frames of Tall Buildings Iio

Rails, Decline in Price 237

Tempering by Carbolic Acid 137

Tensile Strength of b

Tools, to Restore When Burned 9

Stuck Gambling and Deep Mining 254

Strength of Building Stones 408

♦Subaqueous Pipe Tunnel

Subscribers and Advertisers

•Suggestions for Stadia Surveying

Sun, Heat of

Surplus Population of New Mining Camps..

Swedish Mines

Synchronograph, The

♦Tailings Sampler 432

Tarilt on Lead, etc 355, 279, 289

Telegraphic Communication by Kites 117

Teiescriplor, The 393

TellurideOres, What They Look Lilie 545

Tensile Strength of Steel 8

Temperature, Light and Pressure in Ocean

Depths 216

Of Arid Regions 360

Tempering Rfecipe 436

Tendency of English Capital 357

Testimony of Experts 110

Tests of Ores 283

Testing Water Supply 413

Tetanus Antitoxine 136

Theories of Pan Amalgamation 344

Things That Are Near 9

Thorium 176

Thori te , 176

Thistle Shaft Mine, Sierra Co., Cal 3

Tin Mining in Cornwall 171

* Tintic District, Utah 364

Tomboy Mine, Telluride, Col 27, 110

Treatment of Pyritlc Gold Ores 282

Transmission of Earthquake Motion 31

Of Power by Belts and Shafts 116

Transit, Care of, etc 132

Transvaal, S. A , Passport Regulations 3

Trans-Siberian Railway 199, 337

Trans-Mississippi Congress 430

* Triplex Chain Pulley Block 392

♦Trinidad the Gateway 359

Trinity Co., Cal., Mines 77,94, 113, 114,338,262,

286, 326, 346, 370, 39U, 407, 454, 474, 498, 518, 547.

Trolley Wires 413

Trolley, Overhead, Without Wires 550

TuolumneCo.,OaL,Mines....2, 6, 50, 77, 94, 114, 154,

174, 194. 214, 238, 283. 387, 308, 336, 346, 370, 390. 407, 414, 434, 451. 454, 474, 498, 547. County's, Oal., Gold Output for '96. . . 27, 34, 114, 134, 214, 238,

* Turquoise Mining in New Mexico 192

*Two California Mines 361

* Unique in its Motive Power 196

Unique Magnetic Experiment 8

Union Iron Works 14. 33, 373, 411, 503

* Union Gas Engine 215

Union Pacific Railway 47

Universe, Extent of 550

University and Mining School 27,46,333

Unnecessary Change 236

Use of Compressed Air for Mining Purposes.. 412,

436, 456.

Utah's Dividend Mines 3.363

Utah Mines 7,35.60, 77,95, 115, 134, 155, 174, 105,

211, 331, 339, 363, 279, 387, 307, 333, 327, 3J7, 364, 371, 387, 391, 415, J3>, 455, 476, 499, 515, 519, 547.

Utah's Mineral Output, '96 27

Utah & Colorado Railway Co .33

Mining Legislation 171, 211, 407

* Utah, Tintic District 384

Utilizing Wave Power 260

Value of Stock Gambling to Deep Mining 254

* Vancouver Island 68, 69

Variety of Circulating Medium 323

Veins, Lodes and Mine Law 301

Ventura Co , Cal., Mines 306

Victor G. M.Co 343

Victoria's Gold Yield, '96 in

Visibility of Different Candle Powers of L'ght. .156 Voltages, High Electric 236

Walker Co 87

War Locomotives 31

Warning to Locators 470

Wave Power, Utilizing 260

Washington Mines 7,34,50,77,95, 171, 195,382,

287, 327, ai7, 375, 391, 415. 454, 518, 548.

Watt and the Measurement of Power 368

Water Tube Jail 237

Power Project 117

Scoops for Railways 176

Supply, How to Test 413

* Water Heaters and Receivers 209

* Water Power, California's 537

Watches Magnetized 236

Weather Indicator 137

Wells-Fargo's Estimate of Precious Metal

Yield for '96 66,76

Western Federation of Miners 407

West Australian Mining Stoclis 131

West Australia's Progress 537

Kootenay Mines 153

Why He Can't Sell 256

American Machinery Leads 237

Mines Offered Are Not Sold 65

♦Wire Rope Tramway, Finlayson 544

World's Gold Output for '96 2?

Submarine Cables 196

* Wood Direct Current Multipolar Dynamo 176

Woman Changing Her Name 285

Worth Noticing 362

Wyoming Mines 7, 35, 95, 115, 155, 171 , 175, 215,

263, 287. 327, 347, 391, 435, 455, 515.

Gold Locations in ^96 27

X Ray Phenomena 176

Yield of Precious Metals for '96 68, 76

Yuba Co,, Cal., Mines 6,34,77,414

Yukon Railway and Water Route 47

Yukon Mines 233

Cheap po'wer!

Zinc Produced in United States in '9f

, 37

SAVE MONEY BY USING

THE

"DANIEL BEST" Crude Oil Engine.

Thi.s Engine can be operated on either Crude Oil. Diatillatti, Gasoline, or Kerosene. It tn tlie cheap- est power on earth aod is not tied to any one kind' of Oil. but can use any kind that will make gas and Is' not handicapped by being- compelled to use a certain Oil. Do not forget this when in need of an Engine,

We guarantee our Engines to work perfectly on California Crude Oil. or Distillate, or anv other kind^ of paseoue Oil; we however prefer CALIFORNIA CRUDE OIL, from Coallnga, Fresno county, for the' reason that gaa from Crude Oil will produce more' power from tbe number of feet of gas used than from any other Oil, and It is also a natural lubricant as well, the valves being always lubricated euffl- clently to prevent them from sticking, thus assuring greater durability of the working parts than it oiher- wlsevpould be in using dry gae. And another ad- vantage we claim Is. that danger from explosions is reduced to a minimum, there belug no accumula- tion of gas. but is used by the Engine as fast as it is generated and hence Is absolutely safe. The fol- lowing is a test that we made with one of our Five- Horse Power Crude Oil Engines, running ten hours on the different gas oils;

California Crude Oil, 40 grav., 114 galls, at 6c., S.37W

Distillate 40 " 7^ " 8c., .60

Domestic Coal Oil.... 40 " 7Ji " 12^c, .93«

Gasoline 74 " 8H " 15c., V61H

City Gas 1000 feet, 2,00

We manufacture all sizes from two-horse power up. and will guarantee that our Engines will run cheaper and are more simple in construction, have fewer parts and hence are more durable 'ban any other Gas Engines on the market. Seeing Is believ- ing; don't take our word for it, but come and Inves- tigate for yourselves. You can always see one in operation at our works. We will be pleased to see you and will at all times take pleasure in showing them up. Our Engines are specially adapted for running well and mining machinery— In fact, for any kind of power desired. We are the pioneers and first inventors of Crude Oil and Distillate Engines. "We always lead and never follow. Send for Cata- logue and Price List of the only genuine Crude Oil and Distillate Engine made.

The Best M'f'g: Company,

SAN LEANDRO, CAL.

Alaska : : nines.

Developed and Undeveloped Free-Milling Properties.

E. F. CASSEL,

JUNEAU ALASKA.

C> ' l.*I2 _ Our catalogue S Is sent

NPIPnTlTlP fi'ee for the asking. It lists Wl./IV^I ILII IV' books pertaining to all the - sciences. A copy should be

l<r\r\\yo ^'^"^ *^°^ ready reference by

D UU lA O those desiring electrical,

medical, engineering, scien- tific, mining and technical books, which we sell to everybody at wholesale prices.

Montgomery "Ward & Co., Chicago.

Skeleton flining Report.

NEEDED BY EVERY MINING MAN.

FIFTY CENTS POSTPAID.

ItHning and Scientific Press, 220 Market St., S. F.

Mining and Scientific Press.

July .3, 1897.

UNION IRON WORKS,

222 Market Street, San Francisco, Cal.

XHIS

PROSPECTING- BATTERY.

Two-Stamp Self- Contained Battery

^^a^^^ IS DESIGNED BY "^^m,^

THE UNION IRON WORKS

Expressly for Prospecting Work.

It was awarded First Prize at the recent Mechanics' and Manufacturers' Fair, where it was in daily operation, crushing ores from various mines throughout the State.

Weight of stamps, 275 pounds each; capacity of battery, de- termined by actual work, 200 pounds per hour, through a No. 7 slot-punched screen.

Entire battery weighs about 3000 pounds; heaviest piece, mortar, weighing i 200 pounds.

Can be taken apart and transported to any locality.

Electrical Engineering Co.,

34-36 MAIN STREET,

SAN FRANCISCO, CAL. yv\ant4factijrers of All tCincJs of

Electric Machinery

For Mines, Mills and Hoists.

Girard Water Wheel Co.,

34-36 MAIN STREET,

SAN FRANCISCO, CAL.

These wheels are durable, highly eff i= cient, and are the only wheels which have perfect regulation, which feature makes them especially suitable for the operation of electric machinery.

"Union" Hoist.

The above cut represents our 10 h. p. Double Cylinder Engine of latest type, and Hoist combined on strong iron base. This hoist is designed to raise one tonl'25 feet per minute from an inclined shaft, or 1500 pounds at the same spped vertical lift. The drum will hold over600 feet of 5^-inch cable. The out- fit weighs 3500 pounds.

THE UNION GAS ENGINE CO.

-BOH-E) THE-

«i

Union" Gas Engines,

Which use either Manufactured or Natural Gas, Ordi- nary Stove Gasoline (Naphtha or Benzine), Distillate or Kerosene.

STATIONARY ENGINES for All Binds of Work, Enllt in Sizes from 3 to aOO h, p. "UNION" COMBINKD HOISTS In Sizes from 2 to 40 h. p.

"UNION" COMBINED COMPKESSOBS — 20, 30, 40 h. p.

HOISTS and COMPBESSOKS Can Be Built in Larger Sizes to Order. " UNION " MARINE ENGINES, 4 to 200 h. p., of Single, Double and Fonr-Cyllnder Types. TEN YEABS' EXFEBIENCE Baildlng Gas and OU Engines.

"UNION" ENGINES Are In Use All Over the United States.

" UNION " ENGINES Are Simple, Durable and Economical.

Office: 314 HOWARD ST., SAN FRANCISCO, CAL.

July 3, 1897.

Mining and Scientific Press.

Coast Industrial Notes.

—Flagstaff, Arizona, water works.

riUspeDd «10U,000 for

—City expenses will cost San Francisco ♦5,75ti,37l this year.

—During June San Jose, Cal., shipped 3,000,- 000 poundH of cherries.

—The Mexican Sulphur Co. proposes to erect a plant at Ventura, Cal.

—A railroad will be built this summer be- tween Fort Thomas and Globe, Arizona.

— The San Francisco Chamber of Commerce will memoriallzeCongress in favor of Hawaiian annexation.

—The Oarlick Company will supply Kes- wick, Shasta Co., Cal., with water from Spring creek.

—Over 20,000 visitors are expected on this coast next week, the faro from Chicago— 2ti00 miles— being 92o.

—The Torrens system of land transfers was adopted at the last session of the California legislature and Is now in force.

—The East Klverside, Cal., Company will use an electric pumping plant to supply water for irrigation along its system of ditches.

—A thousand tons of tea of the new crop has been landed in Tacoma, Wash.; I'J.tKio.OUO pounds are now on the ocean between Yoko- hama and that port.

— It is thought that the present ex- traordinarily low passenger rates between San Francisco and northern ports will be raised during this month.

—The parties holding the concessions for building a railroad from Doming south Into old Mexico have surveyors iu the field tra- versing the proposed route.

—At Colton, Cal., the fruit cannery was re- opened this week. The cannery employs 400 hands and puts out 35,000 cans of fruit daily. They expect to run live months.

—The Bibb Lumber Co. has a contract with the Chinese Government for 10,000 M. feel railway ties and 7,000 M. feet stringers for building a railroad through Manchuria, China. The lumber is to be delivered at Tien-tsln.

-When the frost came on Florida the orange industry of that State had grown to 5,000,000 boxes, while California then pro- duced but about 1,500,000 boxes. The Los Angeles TimcH says: "It appears now that, barring accidents, southern California can count on harvesting4,0U0,OU0 boxes this year."

—On July 1st the Atlantic & Pacific Rail- way went out of existence. The line from Mojave, Cal., to Albuquerque. N. M., is now known as the Santa Fe Pacific Kailroad. The line from Benson to Guaymas now belongs to the S. P. Co. J. J. Byrne is the general pas- senger agent of the new Santa Fe Pacific,, with headquarters at Los Angeles, Cal.

—The Union Construction Company is or- ganized at Phcenix, Arizona. Capital, $100,- 000. Incorporators, J. W. Beckley, Roches- ter; A. Smith, New York; A. A. Daugherty, Los Angeles. The company is supplemental to the Randsburg Railroad Company, formed several months ago for the construction of a railroad from Kramer, on the Atlantic and Pacific, to Randsburg. a distance of twenty- seven miles. The local representative of the corporation states that the new road will be in operation by August 15th.

—The engineers at Newtown shoals, where the Sacramento enters Suisun bay, have sounded to a depth of 18 or "20 feet be- low low water and encountered only sand. One report is to the effect that hardpan was struck under the sand. This is supposed to be packed or cemented sand. Engineer Price believes that the substance, whatever it may be, should be removed in order to stimulate the current of the river. He holds that dyna- mite would readily loosen the packed sand and the current wou'd do the rest of the work. ^___

Recent California Mining Incor- porations.

Murchie Drift Gravel M. Co., San Fran- cisco; C. L. Benton, C. A. Cole, F. Hiller, J. C. Brown, G. T. Emei'y; capital stock, $300,000; §1500 subscribed.

Old Virginia M. and M. Co , San Francisco; W. F. Drake, G. Strauss, C. T. Ryland, J. G. Hopper, C. A. Stubbs, H. Harvey, J. E. Ga- briel ; capital stock, $200,000; subscribed, $700.

Recently Declared ilining Divi- dends.

Tamarack Copper Co., Michigan, §180,000; payable June 30.

Osceola Copper Mining Co., Michigan, $50,- 000; payable July 36.

Ontario, Utah, $15,000; payable June 30. Total to date, $13,445,000.

Le Roi, Rossland, B. C, $25,000; payable J'une 30. Total to date, $435,000.

Recent Publications Received,

'■* The Broivnslonca of Punnnulvania^^ is the title of a report on this subject just issued from the Mining School of the Pennsylvania State College. It contains 135 pages of text besides twenty-six page plates of illustrations and two maps. It shows care in preparation and contains valuable information on the sub- ject. The author, Mr. T. C. Hopkins, is an expert on the subject of building stones, hav- ing published several monographs on the sub- ject in the Government and different State geological survey reports, and numerous shorter articles in the scientific and trade journals.

Personal.

Loi'is J.tNis Jk. has returned to Sidney.

C. M. Rai.keh is in Montana and will come on to Idaho.

UruN John Muir the University of Wiscon- sin has conferred the degree of LL. D.

J. H. Cox has been appointed superintend- ent of the Trinity Consolidated, Delta, Cal.

Ji'im;k John C.ii.nBitwuun has been ap- pointed manager by the Boston & Colorado Gold Mining Co.

J. H. Co.\ has been appointed superintend- ent of the Trinity Consolidated mine at Delta, Trinity Co.. Cal.

SiMdS & William ('ti'<i(iB.s'iiKiM, the smelter owners, wont up to British Columbia last week to look at the mines.

Allen C. Wasiiincjtos, president of the Horn Silver Co. of Utah and Anson Phelps Stokes from New York are in eastern Nevada.

E.\-GovEKSOR Geokuk Black has been ap- pointed one of the commissioners for the classification of Northern Pacific mineral lands In Idaho.

A. T. DiNiiAK has associated himself with C. H. Chase in the management of the New York Beltiog& Packing Co., Ltd., 50'.) Market St., San Francisco.

PKOF. Samuel F. Emmos?* of the Cnited States Geological Survey will shortly go to the Tintic district, Utah, to take charge of a survey of the mineral belts there.

Commercial Paragraphs.

The San Francisco branch oillce and ware- house of Park Brothers & Co., Limited, Pittsburg, Pa., ''Black Diamond " Steel Works and Lake Superior Copper Mills, has this week removed to the new building 334 and 330 Howard Street, between Beale and Fremont.

HERCULES!

A HOIST that will HELP

put profit into mining. Cuts down expense for power fully one-half; no other engine will do the work of a :::::::::: :

"Hercules"

f >r so little money. Burns (iasoline or Distillate Oil and yields a certain power for every drop used. : : :

Hoisting, Stationary and Marine Engines

from 2 to 200 h. p , guaranteed to do the work required and to save the owner money over any other power. Nearly 3000 now in use for every conceivable power purpose. :::::;:::

^""^.'r.Vaiogto HERCULES GAS ENGINE WORKS, 21? Bay St,, San Francisco, Cal.

E. A. Rix has sold out his stock in the Rix Compresssed Air Machinery Company, and ] has opened a new business undt-r the Utlo of the Rix EnKineerintr and Supply Co. at 5(t7 Market street. He has just coniracted with tho niacU Oak mine for a liiO H. P. compressor plant with J-l-foot direct connected water wbeel, and with the (Jwin Mining Co. for the first half of a 5(iii H. P. plant with duplex lRxC4's and Ifi-foot direct connected water wheel attached. This plant will br for pumping from the mine at an elevation of IJim feet Compound pumps will be employed and a uQique nielh id of reheating, fn addition to car- ryiDj;; on the compressed uir business Mr. Rix has made a connection with one of the hLrge electrical | lompunies and will install electrical plants 1 where they fultili the retiuiret ents better than I compres.sed air. The Cramp-Huadley Co have | placed their agency also with Mr. Kix, and this , places with him the American Wheelock engine, | the most economical of steam engines in this mar- ket, and also the products of several other manu- facturers. *

joMM*ss.!oiirasi*iiiiDiipai!UMsr*«fflU[iMiisiCT[MPi£*(;ifii;iiim^

^S&MM!ll

CHARLES C. MOOSE, Pacific Coast Aerent, 32 FIRST St., SAK FRANCISCO, CAL.

ABNER DOBLE COMPANY,

^ ■lUUViSiS^OFI'ICIES nrSD \A/ORK.S:..^^ZBin~-~,,

Corner Fremont and Howard Streets, San Francisco, Cal.

IRON, STEEL, MINING AND MILL SUPPLIES.

Nickel Cast Tool Steel

FOR DRILLING HARD ROCK,

\A/rite for F*rtc& eindi Particulars.

11! CAZIN WHEEL.

PATENTED MAR. 16, 1897.

Will furnish more power per cubic foot of water used than any other water wheel in the market.

PARTICULARLY SUITED FOR MINING OPERATIONS AND ELECTRICAL ;j J TRANSMISSION PLANTS.

SEND FOE PAMPHLET

ANEUWI lUV

T tf^ mw.l-Buolwtl ,r llw

* ■ r "

t. wuTAirv or nv YORK,

AMERICAN IMPULSE WHEEL CO.of N.Y.

120 LIBERTY STREET, N. Y.

INING MACHINERY, Second-hand.

VA/ILLIS SHAV/V,

Contractors' Machinery, so6 h. t. Life bus., Chicago, m. ♦ write for a copy.

■*■ PRINTED LIST NOW T READY.

INOT SCRMF" IRON,

But Flrst-CIasa Machinery

Of stantlarcl make and modern de- sign. Have most everything for Hoisting. Excavating. Cruslilng, Pumping. Quarrying. Etc. All re- paired and ready for service. AT- TRACTIVE PEICES.

r^ Tjn A TI?C3 R.X.X/VVLOR&CO.

^"^T" t* ■ ^"^ imi^.^- S2J3 mission St., San Francisco, Cal.

Mining and Scientific Press,

July 3, 1897.

TH! HALLIDIE ROPEWAY

stands pre-eminent for the transportation or Ore, Fuel and other materials over mountainous and rugged country.

Parties desiring to remove large quantities of Sand, Gravel, Earth, Ore, Rock, to construct Dams, Levees or Embankments, etc., can do more

efficient work at less cost by the

Hallidie System of Ropeway Transportation

' - --^ Than by any other known system.

SEND/FOR CATALOGUE T0.«ii4ilWW«i'- ^

CALIFORNIA WIRE WORKS,

8 and 10 PINE STREET, = = = = SAN FRANCISCO, CAL.

THE GUTTA PERCHA AND RUBBER M'FG CO,

30 and 3:3 p-REA^OINT ST., S/\IN p-JR/ilNCISCO.

Spadone's Conoentrator

me " SPADONE '

• Carved Edge Concentrator Belt i8 attracting much attention among mmmg men,

practical experience.

TMustration (FiK 1.) sbows a cross-section, ana (Pig. 2.) sliows tlie edge flanging outwardly as it passes o°vertlfe, pulley. This relieyes the.stra:n from the tpp^andbottomoj tbe^edge^by_d.^-

recting the strain automatically to the inside ta_o_e_ surta_ce^of the edges.

Heretofore all belts

^ave leerso constrSS tha -Vhen tSey pass over the pulleys or rolls, a direct strain comes ?;™,i^t''?„^nrT?hf, base otthe edges! causing t-he edges to break away from the body of the

made to fit any machihe-4, 5 and 6 feet wide. Prices and samples on ajiplication.

We shaU be pleased to quote you also on Water, Air Drill, Steam, Suction and Fire HOSE, KrBBBK BELTING and BUBBEK PACKING. Correspondence Solicited.

THE GUTTA PERCHA RUBBER AND n'F'Q CO.

TELEPHONE, MAIN 1813.

PATENT HOOP CLAMP.

^ ■■lUmVASl'l^ /% L I—

[ Z, E S. ^^^iiiiiUB^ -V,.

malleable; IRON. HEADS.IWROUGHT IR0N;B0LT.

These couplings.-are easily, applied. They are the best-m^ost-^owerfuj. They^hav^

dirpcrtiullwo'rUin" freely withtrighfand left sorewton ball and socket joints tangentially ?o cSrvSreS tSl tank The 'turn-buckle principle ot these.clamps maUe_s;th_em^l_asUng favorites with all who have once tried them, department.

We use .them extensively m our_tank-builaing

ORE VATS,

PRECIPIXATIINC: TANICS,

SOLUTION TANKS,

FILTER BOTTOMS, ZINC BOXES, ETC.,

For Hyposulphite and Cyanide Leaching Plants.

PAN AND SETTLER STAVES,

BATTERY QUIDBS,

/\ND

Water Tanks of all Sizes.

WELLS, RUSSELL k CO., Mechanics' Mill, Cor. Mission and Fremont Sts., San Francisco, Cal.

THE WOODBURY ORE CONCENTRATOR WITH IMPROVED BELTS |?,V

tbe smce of any o.her concentrator, Built of best Steel and Wrought Iron ^^Slrongand^^^^^

'its imnrovedtofm which consists ot oorrHgaled edges, to form an expanding lop edge. THE IMPROVED MACHINE iia imijio, cu lu. . ,,„i,^ ...Ki^i. /.nnofot nf opvia,, are f.nnstrneted and arranged so as to allow each belt to rpf^eive a

portion of the pulp in such a manner is to ielie\ e the m

the space of any other CO _

The a""^^|^^^"^f^'V™r*MVRIT^^^ "|''^?ZTSnp"roOed belt^s^ThTcVco^n^^ and an-an^ed SQ-^as to allow each belt tSVeceive a

HAS THE FOLLO^yING Mi-Klib _.bU3t inejanpi^^^^ thereby pivingr it twice the capacity of other concentrators, and enabling It to

work from 12 to 15 tons of ore per day. Second— The machine equalizes tlie load by several eom- nirtments thereby workiuer more reg-ularly and with much less attention than is necessary to g-ivo other concentrators using wide Delts. Each of the belts on this machine tultes care of the pnlp that IS allowed to it— in this way preventing the pulp from running to the lower side of it, as is the case

when a machine becomes out of level where wide belts are used. Third— The bells run on a perfect line, needing no adjustment to prevent their running from side to side, as in other con- centrators. Fourth— The belt siu'facea are im- proved by indentations and corrugations causing the Concentrator to save line sul- phurets and quicksilver, and perform closi work. Fifth— The belts have fluted or corru- gated edges, to form an expanded top edge, which effectually prevents from cracking. Si.xth — The feed arrangement is perfect. Seventh— The machine is constructed of iron, with steel erank-shaft self-oiling boxes, and everything made in the most thorough manner, enabling it to run with very little attention or wear.

This Concentrator took the 1st prize at tlie San Francisco 3Ieclianlc8' InHtitute in 1890, 1891 and 1893, and at the Califor- nia State FaU^ in 1893; it tooJt the 1st.

awarded the Highest (Bronze Medal) Premlnm at Mechanics' Institute. 1800 and 1891.

MORE THAN DOUBLE THIS CAPACITY with one-half less power and occupying less than one-half ''^ *" " b. Send for Cat;i]ogue and Testimonla'-

PATENTED, Aug. 19. 18i)0.

prize at the World's Columbian Fxpositlon 1893, and at the San ^Francisco Midwinter Fair, 1895.

\A/. H. BIRCH & CO.,

rSo. \27 to 135 Rirst street, San Rrancisco, Cal.

BUILDERS OF Lightn^i* Qu^ft^ TWills.

No. 2 niLL==3 TONS CAPACITY, 1 1=2 H. P., = = $225.

No. 3 niLL==6 TO 10 TONS PER DAY, 3 1-2 H. P., $600.

LARGER ^VVILLSrBUILX. - - = - SEND F^OR CIRCULAR.

"BIRCH" TWO-STAMP MILLS, McQLEW CONCENTRATORS, AND ALL KINDS OF MINING MACHINERY.

THE "LIQHTNER" QUARTZ MILL.

CALIFORNIA ELECTRICAL WORKS.

Dynamos, TWotors, Hoisting Apparattjs, Arc and Incandescent Lamps*

Instruments, and General Supplies.

TELEPHONE AND LINE CONSTRUCTION. LONG DISTANCE POWER TRANSHISSION A SPECIALTY.

Office and \A/ork:s: 409 TWARICET ST., SAN F^'RANCISCO, CAL.

July 3, 1897.

"^-A

Mining and Scientific Press.

RISDON IRON W/ORKLS,

OllUf mill Works, Cor. lleiile auil Howard St«.. SAN FRANCISCO.

EHINERS, ATTENTION!:

We bes to call attention to our " RISDON HAMMERED " Shoes and Dies, which are made of a special quality of steel, are hammered and then compressed in moulds so as to give the greatest possible density.

These Shoes will outlast any other make and will not chip or cup.

We have attached a sketch showing sizes; fill in the size of your Shoes and Dies, and order a trial set.

Our prices are as low as any, and the article we offer should commend it to all mine owners and mill men.

ooisrs

113 .A. "te;:

Kansas City Smelting: and Refining Co,

Incorporated Under The l_avus

Capital paid in.......

of IMeiA/ "Vorlc.

^:2,T00,000.

Buyers of All Classes of

GOLD, SILVER, LEAD AND COPPER ORES,

Bullion, Mattes and Furnace Products,

GOLD BARS, SILVER BARS and MILL PRODUCTS.

SMELTING WORKS: Argentine KM.i El Paso.Tex.; Leadvllle. Colo.

REDtJCTION WORKS:

ArEentine, Kas. i

We use the tollowlng Cipher Codes at our Ar- gontlne Works: A. B. C. Code; Morelng & Neal s |^ Code and Bedford McNeill's Code.

AGENCIES: In United States — Denver, Colo.

Cripple CreeU, Colo.

Suit Lake City, Utab. Spoltane. Wash.

New York City, N. Y. Chicago, 111.

St. Louis, Mo. In Mexico —

San Luis Potosl,

City of Mexico

Chihuahua.

Pachuca,

HermoslUo,

Jimenez.

FOK PRICES, ADDRESS : J. E. Jackson, No. 6 Atlas Blk, Salt Lake, Utah, C. D. Porter, Spokane, Wash.

H. A. Trne, 815 17th St., DenTer, Colo. J. H. WedcUe, LeadTlUe, Colo. C. K. Finney, Argentine, Kan.

WOHKS UF TUK CON. KAN.SAS CITY SMELllNG ANi* HLblNlNQ CO. AT LEADVILLE, COLO.

The yWine eind Smelter Supply Co., Den\/er, Colo.

THE LARGEST STOCK OF MINING, niLLINQ AND SHELTING MACHINERY WEST OF CHICAGO.

PIPE, PACKING, RUBBER BELTING, AND SUPPLIES OF ALL KINDS.

10fcJi«:aggS^.«Eg5 WILFLEY CONCENTRATING TABLE,

And claim for it better work than any Concentrator made, with a capacity of from 15 to 25 tons per day of 24 hours. It is simplicity itself. No moving belts or intricate parts. Any one can learn to operate in an hour.

,\A/i»*^f*-'^'^ COISCEINTRATOR

For connrmation of all Of the above we refer to Henry Lowe, Puzzle Mine, Breckenridge, Colo.; Mary Murphy Mine, St. Elmo, Colo. W. E. Renshaw, Mayflower Mill, Idaho Springs, Colo. ; H. E. Woods, Denver, Colo.

- GENERAL OFFICES OF -

The Durant Mining Co. The Late Acquisition Cons. Mining Co. The Compromise Mining Co. The Aspen Sampling Co. The Conomara Mine. The Smuggler Concentrator. The Smuggler Mining Co.

ASPEN, COLORADO, April 8, 1897. The Mine and Smelter Supjily Co., Denver, Co^o.— Gentlemen : Your favor of the 5th inst. at hand and noted. In regard to tbT Wilfley Table I wish to say that I consider it to be the best device in use to-day for concentrating fine ores; that it will save everything that a gold pan will; that it combines the clean saving of a Ritlinger with the capacity of a buddle. I think that without question it will sup- plant in time all other devices for handling fine and slimy ores. This Includes all the vanning machines and buddies.

This is higher praise than I am in the habit of giving, but I feel sure that it is deserved, and you may make any use of this that you desire. Yours very truly, [signed] S. I. HALLETT.

t PRICE, $450."^.

These Tables have displaced bolt tables of almost every make, as l8 shown by letters In our possession.

CYANIDE

V\i6

Viest Known Gradg

*==VAIVOGeT**

POTASSIUM.

GUARANTEED

99% and over.

ll:2-llb.

Zinc Lined

Oases.

THE GAS LIGHT & COKE COMPANY.

Works at BECKTON near LONDON, EINGL/VND.

For Prices, Address

SCHOELLKOPF, HARTFORD & MACLAQAN, Ltd,, Sole American Agents.

No. 3 Cedar Street,

NEWYORK CITY.

TURBIHE

AND

CASCADE

WATER WHEEL

Adapted to all Heads from

Feet to 2000 Feet.

Our experience of 33 YEARS building Water Wheels enables us to suit every requirement of Water Power Hants. We guar- antee satisfaction.

Send for a Pamphlet of either Wheel and write full particulars.

JAMES LEFFEL&CO.

SPRINGFIELD, OHIO, U.S. A.

HEADQUARTERS.

Genuine English Pump Leather

For Heavy-Mining Pump Buckets. WUi

outwear any-oEliei'-raaterfal.an<3 give best satisractlori. -SaVnplea fiti-ulshfed on appli-

cation. A. C7NICHOLS & CO., Leather Manu- facturers and Dealers, 404 Battery St., S. F

To Qold Miners!

Silver Plated Copper Amalgamating Plates

For Saving Gold in Quartz and Placer Mining.

E.\j&r-y Description of yvijning Folates rt^ade..

ONLY BEST COPPER AND REFINED SILVER USED. OLD MINING

PLATES REFLATED. TWENTY-SIX MEDALS AWARDED.

GOLD, SILVER, NICKEL, COPPER » BRASS PLATING.

Denniston San Francisco Plating Works,

653 and 655 Mission Street, San Francisco, Cal>

E. Q. DENNISTON, Proprietor.

Telephone, Main 5931. Send lor Circular.

Riveted Steel Water Pipe.

THE WEIGELE PIPE WORKS,

2949-51 Larimer St.

HYDRACIilC GTANTS IN STOCK.

DENVER, COLO.