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California, deep placer mining in.
California, expense of tunneling in..
California, extent of deep placer deposits...
California, gold-producing capacity of deep placers.
California, gold yield of..
California, hydraulic mining in..
California, improvements in hydraulic mining..
California, prospects for the future in.
California, reduction by mill process.
California, river-sluicing in .....
California, shallow placers in..
Cañons of the Columbia and its tributaries.
Canvas hose for hydraulic mining....
Caribou or Grand Island district, Colorado, development of silver mines in.
Carinthian process, silver...
Causes of depression of placer mines, California.
Cement deposits of auriferous gravel..
Cement mining in California...
Cement mining and reduction by mill process.
Cement stamp-mills..
Census returns, examination of....
Central Pacific Railroad Company, experience of, with Chinese...
Centrifugal force and zinc, separation with, silver..
Chemistry of Washoe process.
Chinese in deep mines.
Chinese labor question....
Chinese labor unions....
Chinese miners, fidelity of.
Chinese single-hand drilling..
Chinese skilled miners.
Chloridization, saving in cost of.
Chlorination, lixiviation and precipitation in.
Chlorination, preliminary treatment of ore in..
Chlorination, preparation of chlorine for.
Chlorination proper.,
Chlorine gas, gold refining by.
Climate of Arizona...
Coal, Colorado....
Coal deposits of Wyoming..
Coal from Monte Diablo, receipts of, at San Francisco.
Coal trade of San Francisco.
Coinage at San Francisco mint.
Colorado, altitudes in...
Colorado, bullion product of.
Colorado coal..
Colorado, condition of mining industry in.
Colorado, number of stamps in.
Colorado, railway communication in.
Colorado, remarks on tunnel fever in.
Colorado, smelting-works in....
Colorado, Territorial fair at Denver..
Colorado, treatment of auriferous ores in.
Columbia River and tributaries, cañons of.
Conustock mines...
Comstock mines, accidents at.
Comstock mines, bullion, dividends, &c., of.
Comstock mines, dividends of..
Comstock mines, statistics of..
Concentration after crushing auriferous ores, Colorado...
Concentration, details of apparatus for, Colorado.
Concentration, dry, Colorado..
Concentration, economical results of, Colorado..
Concentrator, slime ore, Rawlings & Stephens's.
Concow Valley, water from, for mines in Butte County, California...
Coöperation of owners of mining ground.
Copper ores, Inyo County, California.
Copper plates, amalgamated.
Cordurié's process, silver..
Cordurió's process, modification of, at Lantenthal.

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Craig's globe monitor or globe hydraulic muzzle.....
Crushing in stamp-mills, Colorado....
Cupelling-furnaces of the Cervantes Company.
Currency movement....

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D.
Deep placer deposits, extent of, California.....

61
Deep placer mining in California.

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Deep placers, California.....

56
Deep placers, gold-producing capacity of, California.

62
Denver, Colorado, Territorial fair at..

287
Deposits, deep placer, extent of, California..
Depression of placer mines, causes of, California.

56
Diamond borer, Von Schmidt.......

67
Diamond-pointed drills .....

59, 66, 69
Diamond-pointed stream-drills, application in California

66
Distribution, geographical, of mining districts...

503
Ditches in Montana, list of...

216
Dividends of the leading mines on the Comstocks lode.

103, 104, 107, 110
Drill, Blatchley.

65
Drilling-machine.

65, 69
Drilling with small drills..

5
Drilling, single-hand.....
Drills, steam, diamond-pointed, application in California..
Dry concentration, Colorado

374

E.
English process, silver....

436
Eureka, Nevada, furnaces at..

122
Expense of tunneling in California
Experiments upon Kentuck ore, results of..

408
Experiments upon Savage ores, results of

409
Exploration of valley of Upper Yellowstone.

213
Explosives in small-drill holes..

5
Exports of gold and silver bars from San Francisco.

528
Extent of deep placer deposits, California...

61
Extraction of silver and refining of lead....

444

F.
Fair at Denver, Colorado....

287
Fisher's (F. H.) knuckle-joint and nozzle...

65
Fortieth parallel geological exploration, publication of volume on Mining In-
dustry..

6
Fountain's pan..

396
Freiberg, Saxony, process of smelting at

443
French process, silver..

435
Furnace, Piltz.

125, 438
Furnace, Rachette.

438
Furnace, Stetefeldt..

112
Furnaces, Eureka, Nevada.

122
Furnaces, Stetefeldt, at Austin and at Reno.

112
Furnaces, roasting and precipitating, silver.

437
Future prospects of California...

59
G.
Galemador, a furnace for smelting-argentiferous lead ores......

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Galena ores, Inyo County, California

21
Geographical distribution of mining districts.

503
Geology of Arizona.....

228
Giant powder, use of in mines.

59,71
Gilpin County, Colorado, gold veins of.

298
Globe monitor or globe hydraulic muzzle, Craig's..

64
Gold nuggets and gold dust, origin of..

508
Gold-producing capacity of deep placers, California..

62
Gold-refining by chlorine gas..

424
Gold veins of Gilpin County, Colorado...

298
H. Ex. 1036

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Gold vield of California..
Grade of flumes.....
Grand Island or Caribou District, Colorado, development of silver mines in..
Grasy Valley, Nevada County, California, account of mines in..
Grass Valley and Nevada City, California, gravel mines of..
Gravel mines of Nevadla City and Grass Valley, Nevada County, California.
Gray's Peak, Colorado, excursion to....

317

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Machines, rock-drilling.
Mariposa estate, Chinese labor on the.
MicConc's pan..
Measurement of water-miners' inch.
Metallurgy, improvements in..
Jill process, reduction by, California..
Mill of Stewart Silver Reducing Company, Colorado......
Miners' leagues......
Mines, gravel, of Nevada City and Grass Valley, Nevada County, California..
Mines, hydraulic, Smartsville, California
Mining, cement, in California.
Mining, deep placer, California
Mining districts, geographical distribution of.
Jining, hydraulic, in California....
Mining, hydraulic, improvements in, California.
Mining industry, condition of...
Mining industry, condition of, in Arizona.
Mining industry, condition of, in California.
Mining industry, condition of, in Colorado..
Mining industry, condition of, in Idaho...
Mining industry, condition of, in Montana.
Mining industry, condition of, in Nevada..
Mining industry, condition of, in New Mexico...

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Mining industry, condition of, in Oregon...
Mining industry, condition of, in Utah.
Mining industry, condition of, in Wyoming.
Mining industry, report of U. S. geological exploration of fortieth parallel on.
Mining in Ivyo County, California, general remarks on.
Mining law, the...
Mining stocks, quotations of at San Francisco...
Mining stocks, highest and lowest prices of.
Monitor (globe) or globe bydraulic niuzzle, Craig's.
Montana, bullion product of...
Montana, condition of mining industry in
Montana, list of ditches in....
Monte Diablo coal, receipts of at San Francisco.
Morey District, Chinese at
Movement of ores and base bullion in Nevada.

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N.
Narrow-gauge railways...
Nevada City and Grass Valley, California, gravel mines of.
Nevada, condition of mining industry in ..
Nevada, movement of ores and base bullion in.
New Mexico, condition of mining industry in.
Nozzle and nuckle-joint, F. H. Fisher's..
Nugget of gold from Rattlesnake Bar...
Nuggets of gold in the American River Valley.

0.
Ore-concentrator, Rawlins & Stephens's
Oregon, condition of mining industry in ....
Ores and base bullion, movement of, in Nevada.
Ores, copper, Inyo County, California..
Ores, galena, Inyo County, California
Origin of gold nuggets and gold dust.

47
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141
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508

P.

Pan, Fountain's
Pan, Hepburn & Peterson's conical.
Pan, Horn's
Pan, McCone's.
Pan, Varney's..
Pan, Wheeler & Randall's conoidal
Pan, Wheeler's.
Pan-amalgamation, Washoe..
Piltz furnace.
Piltz furnace, improvement of.,
Pipe for hydraulic mining:
Pise, France, smelting-works at.
Placer deposits of California, origin of.
Placer mines, causes of depression of, California.
Placer mining, deep, California
Placer mining in Amador County
Placer miving in Calaveras County.
Placer mining in El Dorado County
Placer mining in Mariposa County
Placer mining in Nevada County.
Placer mining in Sierra County
Placers, deep, California...
Placers, shallow, California.
Plates, amalgamated copper.
Plattner chlorination process.
Pot-bolo, remarkable one in Nevada County
Powder blasts, Smartsville, California .
Precipitation process, silver.
Precipitating and roasting furnaces, silver.
Producing capacity of deep placers, California
Product, the bullion...
Prospects for the future in California.....

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439
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441
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437

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Q.

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Quicksilver, causes of rise in
Quicksilver, product of .
Quicksilver, production of, in California.
Quicksilver, rise in value of..
Quicksilver, quantity used in working quartz
Quotations of mining stocks, San Francisco...

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R.
Rachette furnace
Railway communication in Colorado.
Railways, narrow-gange
Rawlins & Stephens's slime ore-concentrator
Receipts of treasure at San Francisco.
Reduction in Inyo County, California, general remarks on..
Reduction by mill process, California.
Refining of gold by chlorine gas...
Retining of lead and extraction of silver
River-sluicing in California...
Roasting and precipitating furnaces, silver.
Roasting and reduction process, silver
Rock-drill, the Blatchley.
Rock-drilling machines.

S.
San Francisco, coal trade of
Sarage ore, results of experiments upon
Screens for cement-mill batteries.,
Separation with zinc and centrifugal force, silver.
Shaft-furnaces, smelting in, Colorado :
Sheet-iron pipe for hydraulic mining
Signals in placer mines
Silver ores, prices paid for, at Reno, Nevada
Silver ores, smelting -
Silver and lead smelting in San Francisco
Silver Peak, Nevada, Chinese at..
Single-hand drilling
Single-band drilling by Chinese
Slime ore-concentrator, Rawlips & Stephens's.
Slimes, treatment of, in Washoe process
Sluicing, river, in California
Smartsville hydraulic mines, California.
Smartsville, California, powder-blasts at.
Smelting.
Smelting at Freiberg, Saxony
Smelting in blast furnaces, silver.
Smelting in open hearth, silver
Smelting in reverberatory furnaces, silver
Smelting in shaft-furnaces, Colorado..
Smelting silver ores..
Smelting silver and lead in San Francisco
Smelting-words in Colorado..
Smelting-works at Pise, France
Snake River bars..
Southeastern Arizona, description of.
Speed of stamps, Colorado and elsewhere.
Stamps, number of, in Colorado
Stamps, speed of, Colorado and elsewhere.
Stamp-mills, crushing in, Colorado
Stamp-mills for cement
Stamp-mills, list of .
Stanip-mills, list of, Arizona.
Stamp-mills, list of, California.
Stamp-mills, list of, Colorado
Stamp-muills, list of, Idaho
Stamp-mills, list of, Montana
Stamp-mills, list of, Nevada .
Stamp-mills, list of, New Mexico

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