Volume 17 (1868) (428 pages)

144 The Mining and Scientific Press. Gold Mining--Quicksilver vs. Melted Zinc. Snecessful gold mining comprises the possession of sufficiently rich gold quartz to pay for extraction and working, and the ability to extract the gold from the quartz economically and perfectly, in as few operations, and with as simple machinery, as possible, requiring the presence of only such conditions as are anywhere at hand. When we fairly examine the retentive facoit; of quicksilver for gold, we ‘fiod it very limited, indeed ;—that the affinity acts only on the perfectly pure surtace of both—a minority of cases in reality——and that a reduction in temperature so greatly reduces the affinity, that it hardly exists below a temperature of 42° Fah. The tesult is that, on an average, only one half, or thereabout, of the gold is extracted by quicksilver from the ore; the rest is either carried away ag float-gold, by the water required for the batteries, or remains in the tailings, This fact, known to every intelligeut operator, should alone be sufficient to point out the imperative necessity HANSBROW’S CHALLENGE Deep-Well, Mining and Double-Cylinder Patent Pumps. These Pumps combine all the advantages of the common Lift and tbe Double-Acting Suction and Force Pumps, and are equally fitted for all—Household, Farm, Mill, Manufactory, Brewery, Ship, Railway, Mining, and other purposcs, aod are especially recommended on, account of ness, compactness, durability, cheapness, and tbe facility with whicb they can be placed in any position. They are adapted for Hand, Steam, Horse, Wind Power. any other Pumps of the same power. Four-Inech DeepWell Fump. of devising other extracting agents for that ie great majority of ore, containing more than $20 to $25 per ton; but not rich enough to leave a profit by direct chlorination. Concentration of the sulphurets, for chlorination, involves at best a great loss in floatgold, Many localities, with rich quartz veins, have insufticient water for batteries within convenient distance, aud for the greater part of the year the ore has to be hauled long distances, with heavy expenditure, to a mili-site with water, or the mine must be abandoned and lie idle. The case therefore stands thus: What is required, is an extracting agent, that does . the work complete, cheapor than chloride, . and requiring no water to reduce the ore, . except such as is needed for the engine. . Zine, of all substances in existence—— chloride not excepted—has the greatest affinity to gold. Its action, in a melted state, on gold, is to instantaneously dissolve the same in any proportion. Its specifie grayity—about 7—is sufficiently high to float all debris, not excepting sulphurets of iron, the constant companion of gold. It melts ot 2 comparatively low temperature, and requires but little heat to retain its melted state. It is sufficiently volatile to permit of retorting, as in the use of quicksilver, but by a covered surface and a temperature helow a dark-red heat, the loss by volatilization and hurning is hardly appreciahle, while the metal is obtained at a low price and in any quantity required. Thus we have in zinc a material manageable and fulfilling the conditions required of a goldextracting agent in a high degree—higher than any other known. The mode of applying it for this purpose . was patented, April 7th, 1868, by the undersigned, for many years engaged in gold mining. It consists simply in gradually introducing the gold-bearing pulverized substance, below the surface, into a bath of melted zine, which will immediately attack and dissolve nearly or every particle of gold, while the debris rises to the surface to he taken off. The mechanism is very simple and durable. Should sulphurets, in which particles of gold are so firmly imbedded as not to offer any contact even on the smallest point, prevent the extraction to such a degree, that it will pay to work it over by conceutration, roasting and chlorination, it may be done. But all the gold, in another manner lost as floatgold, and much more, is certainly already saved by the zine. Dry crushers to be used iu preference. Millions of tons of tailings, now worthless waste, might thus be worked profitahly, . and thousands of good mines not capable of profitable working by amalgamation or chlorination, could be made to yield fair profits. Millions of dollars annnally would thus be saved to the country. Gold mining throughout the country languishes for the want of such a radical improvement. The additional cost of extraction by zine may he stated as about $8 to $12 per ton, or less than half of chlorination, while it does the work fnlly or nearly as effectually, certainly infinitely quicker. R. p’Hrvrevse. Inon WorkK For THE Paciric RarzRoap. The entire capacity of the Pacific Rolliog Mills is taxed to execute the orders for the Pacific Railroad. The two sets of rollers are in full operation maiuly on long and short serew bolts for car work. Itis found that the mill cau turu ont @ good quality of work at satisfactory prices. A large set of rollers for railway bars have arrived from Birmingham, England, weighing abont 4,500 ponuds each, The demand for heavy iron work is worthy of note, It appears that the uew industry was not ahead of the times, Tho Valves nre of the simplest construction, common nuts. aid of a skillful mechanic. The lower vatves of these Pumps work upon inclined seats, which prevents sand or other matter that the Pumps may take up, from remaining uoder tho valves, or stopping the flow of water. These Pumps are worked with less friction, and consequently require less power than any other Double-Acting Pumps of equal capacity. All sizes, from 2-inch to 8-inch Cylindor, manufactored by the Pacific Iron Works, GODDARD & CO., and for sale by the Agents, 0G>Send for a descriptive Cireular. They are more durable io all their parts thao They are not liable to get out of order, aod cao at all times be removed without tho Ww. T. GARRATT, City i BRASS AND BELL FOUNDER & Cor. Mission and Fremont sts., SAN FRANCISCO. Manufacturer of Brass, Zinc, and Anti-Friction or Babbet Metal Castings; CHURCH AND STEAMBOAT BELLS, TAVERN AND HAND BELLS AND GONGS, FIRE ENGINES, FORCE AND LIFT PUMPS, Steam, Liquor, Soda Oli, Water and Fiange Cocks, and Valves of all descriptions, made and repaired. Hose and all other Joints, Spelter, Solder, and COnpEn Rivets, &c, Gauge Cocks, Cylinder Cocks, Oli Olobes, Steam Whistles, — FWYDEAULIC PIPES AND NOZZELS For Mining purposes, Iron Steam Plpe furnished with Fit. tings, &c. Hine Joints of all sizes. Particular attentlon pald to Distillery Work. Manufacturer of ''Garratt’s Pat tent Improved Journal Metal.” [. sayHighest Market price pald for OLD BELLS, COPPER AND BRASS. -@f 6tf io : . . i their light Water, or Sheffield Scientific School _ Of Yale College, New Huven, Conn, This department of Yale College, instituted in 1840, and endowed with the Natlonal Land Grant In 1866, furnishes advanced instruction In the various branches of Matbe. matical, Physical, and Natural Science. Tho School is under the direction of the President of the College, a Board of thirteen Professors in different spectal tles, and slx assistant instructors. Regular courses of study, leading to the degree of Bach. elor of Philosophy, conferred by Yale College, are ar. ranged as follows: 1—Cuxsustuy aND MINERALOGY. 2—ClyIL ENGINEERING =3—MecHanicay Exginxyring 4—Minisg ENGINEERING AND Merautuscy. 5—AGricuLtURK. @—Nat uRnaL History AND GEOLOGY, ald 7—SxLxor Course. Advanced students are also admutied lo optional courses, and if alroady College graduates, aro recclyed as candi. By Yes dates for the degrce of Doctor of Philosophy. Seay Tuitlon, $125 per year of forty weeks, The Librarles, Museums, Lahoratorles and Apperatns, accessible to students, are varlous and expensive. For coples of the Annual Circular and Report, letters may be addresscé to the ‘*Seeretary of tile Sheffield Scientifle School," New Haven, Conn. 13v6-ty16p AMERICAN (VALTIAM) W A TCH F Se THE BEST! Ti I } aii aod can be readily taken out by loosening two THE CHEAPEST? OCKE & MONTAGUE, L 112 and 114 Battery Street, San Francisco. Tho extensive use of these Watches by Rallway Con ductors, Engincers and xpressmen, 1he most exactly noob iid wih ui Rails Newel Posts, = AND BALUSTERS, Constantly on hand for sale, and shipped, together with all kinds of STAIR WORK, Toany partof the coast. Practieal workmen sent, when desired, to put up the same. Work Warranted to Fit hy simply sending a correct ground plan of stairs, together with hight of story. ugSpanish Cedar always on hnund for sale. class of wateh wearors, has Ihvroughly demonstrated the strength, steadiness, durablilty and accuracy of the Waltham Woteh. To satisfy that class In ali these respects Is to declde the question asto the real value of these tmokeepers, More than 390,000 are thus speaking for themselves In the pockcis of the peopie. Imported watches are made on on expensive system, In smali numbers, but by numerous makers, and are placed . In tbe market hero by an jinporter, who first secures a MONOPOLY OF SALE OF SOME ONE MANUFACTURE. To the manufacturer's profit must be added the cost of . Importallon. A custom-house duty of twenty-five per cent, payahle In gold. A profit of nt least twenty-five per cent. to ihe Importer ; another to the jobber, thus doubling the cost of the lmported Watch. At Waltham, Watches are manufactured on nlarge seale under one roof and eystom of supervision and manugeKi aa Hetil a N. P. LANCLAND, STAIR BUILDER, No, 49 Beal street, i il) fi ‘i senate gy eects] Between Market and Misslon, f fA f SAN FRANCISCO. 16vl6-ly ment, theroby saving many of the expenses necessarily lu. N. W. SPAULDING, Saw Smithing and Repairing ESTABLISHMENT. Nos. 17 and 319 Fremont St., near Market, MANUFACTURER oF SPAULDING’?S Patent Tooth Circular Saws, They have proved themselves to be the most durable and economical Saws in the World. EAGH SAW 1S WARRANTED IN EVERY RESPECT: Partieular attentlon paid to eonstrection of Portable & Stationary Saw Mills. MILLS FURNISHEO AT SHORT NOTICE, At the lowest Market Prices. DUDGEON’S PATENT HYDRAULIO LIFTING-JAOKS —aAND— BOILER PUNCHES, Elghth street, cor, Minna, 84N FRANCISCO. liv36.6m16p curred in sinall cstablianments,—hence thelr groat cheapness, All respectable dealers now sell Walthnm Watehes, and competitlon, as the world knows, Is tuvorable to small protis, The trade 1s satisfied, becanse, though the profit on euch watcl is sinali, the demand ls large and all ure saleable. Unscrupulous Importers oecaslonally place a worthlcrs Swlss imitatlon Inthe market. To avoid imposition, the purchascr should Invartably demand a certificate of yeuulneness, slyned by R. E. Robbius. There are different grades ot Anish in the different varie. tles of Watches made by the Walthum Company, as thore are different sizes and shapes to sult all tastes and means; but every Wateh that beurs tho gennine trade-mark cf “Waltham,'' ls guarantecd to be a good one, aud nobody need be afraid to buy it. Every Watch Fully Warranted. For sale by all first-class dealers lu the United States nnd Britlsh Provluces. ROBBINS & APPLETON, AGENTS, 182 Brondway,. New York, B,. B. GRAY & CO., Agents for California, @16 Merchant street, Sau Francisco. W. E. LOOMIS, News Dealer AND STATIONER, pouthcast corner Sansome and MAGAZINES, Per An. cra New York Led Blackwood . Hours at Hon: Good Words,. yer Petersou’s. 3 vu) Washington strecla, ee ine BUPPLIES ALL Harper's Wee 5 OW EASTERN linporters and Wholesate Dealers ln Uhimmey Corner. Literary Albnim. Loudon Saciety,. Allthe Year Roun: London Ili. News., 6. P BRIODICALS 16 Oo . By the Year, Mouth or Number. STATIONERY, Blank Books, Sehool Books, PLAYING CARDS, Wrapping Paper, Paper Bags, ete., eic, Nos. $29 and 332% Sansome street, corner Sacramonto, +o~ Special utteution given to orders [rom Country Merchants. ’ 2vléeow-19p Mrsing Peess,—This old standard mining jourual of the Pacitic Coast, cones lo us this week, nuuter i ot Yolune XVI, and much improved in several particulars A braite thulnew head and heading letters throughout, make lt the nearest, ay it has always been the best, exponent of the hndastries of Ils coast. ents miner should take the Peras. The auhserlpilon price fs $5 per yenr, and the Port. Sais at Monitor ls an authorized agent.—Alpine Miner Wy Ath.

144 The Mining and Scientific Press. Gold Mining--Quicksilver vs. Melted Zinc. Snecessful gold mining comprises the possession of sufficiently rich gold quartz to pay for extraction and working, and the ability to extract the gold from the quartz economically and perfectly, in as few operations, and with as simple machinery, as possible, requiring the presence of only such conditions as are anywhere at hand. When we fairly examine the retentive facoit; of quicksilver for gold, we ‘fiod it very limited, indeed ;—that the affinity acts only on the perfectly pure surtace of both—a minority of cases in reality——and that a reduction in temperature so greatly reduces the affinity, that it hardly exists below a temperature of 42° Fah. The tesult is that, on an average, only one half, or thereabout, of the gold is extracted by quicksilver from the ore; the rest is either carried away ag float-gold, by the water required for the batteries, or remains in the tailings, This fact, known to every intelligeut operator, should alone be sufficient to point out the imperative necessity HANSBROW’S CHALLENGE Deep-Well, Mining and Double-Cylinder Patent Pumps. These Pumps combine all the advantages of the common Lift and tbe Double-Acting Suction and Force Pumps, and are equally fitted for all—Household, Farm, Mill, Manufactory, Brewery, Ship, Railway, Mining, and other purposcs, aod are especially recommended on, account of ness, compactness, durability, cheapness, and tbe facility with whicb they can be placed in any position. They are adapted for Hand, Steam, Horse, Wind Power. any other Pumps of the same power. Four-Inech DeepWell Fump. of devising other extracting agents for that ie great majority of ore, containing more than $20 to $25 per ton; but not rich enough to leave a profit by direct chlorination. Concentration of the sulphurets, for chlorination, involves at best a great loss in floatgold, Many localities, with rich quartz veins, have insufticient water for batteries within convenient distance, aud for the greater part of the year the ore has to be hauled long distances, with heavy expenditure, to a mili-site with water, or the mine must be abandoned and lie idle. The case therefore stands thus: What is required, is an extracting agent, that does . the work complete, cheapor than chloride, . and requiring no water to reduce the ore, . except such as is needed for the engine. . Zine, of all substances in existence—— chloride not excepted—has the greatest affinity to gold. Its action, in a melted state, on gold, is to instantaneously dissolve the same in any proportion. Its specifie grayity—about 7—is sufficiently high to float all debris, not excepting sulphurets of iron, the constant companion of gold. It melts ot 2 comparatively low temperature, and requires but little heat to retain its melted state. It is sufficiently volatile to permit of retorting, as in the use of quicksilver, but by a covered surface and a temperature helow a dark-red heat, the loss by volatilization and hurning is hardly appreciahle, while the metal is obtained at a low price and in any quantity required. Thus we have in zinc a material manageable and fulfilling the conditions required of a goldextracting agent in a high degree—higher than any other known. The mode of applying it for this purpose . was patented, April 7th, 1868, by the undersigned, for many years engaged in gold mining. It consists simply in gradually introducing the gold-bearing pulverized substance, below the surface, into a bath of melted zine, which will immediately attack and dissolve nearly or every particle of gold, while the debris rises to the surface to he taken off. The mechanism is very simple and durable. Should sulphurets, in which particles of gold are so firmly imbedded as not to offer any contact even on the smallest point, prevent the extraction to such a degree, that it will pay to work it over by conceutration, roasting and chlorination, it may be done. But all the gold, in another manner lost as floatgold, and much more, is certainly already saved by the zine. Dry crushers to be used iu preference. Millions of tons of tailings, now worthless waste, might thus be worked profitahly, . and thousands of good mines not capable of profitable working by amalgamation or chlorination, could be made to yield fair profits. Millions of dollars annnally would thus be saved to the country. Gold mining throughout the country languishes for the want of such a radical improvement. The additional cost of extraction by zine may he stated as about $8 to $12 per ton, or less than half of chlorination, while it does the work fnlly or nearly as effectually, certainly infinitely quicker. R. p’Hrvrevse. Inon WorkK For THE Paciric RarzRoap. The entire capacity of the Pacific Rolliog Mills is taxed to execute the orders for the Pacific Railroad. The two sets of rollers are in full operation maiuly on long and short serew bolts for car work. Itis found that the mill cau turu ont @ good quality of work at satisfactory prices. A large set of rollers for railway bars have arrived from Birmingham, England, weighing abont 4,500 ponuds each, The demand for heavy iron work is worthy of note, It appears that the uew industry was not ahead of the times, Tho Valves nre of the simplest construction, common nuts. aid of a skillful mechanic. The lower vatves of these Pumps work upon inclined seats, which prevents sand or other matter that the Pumps may take up, from remaining uoder tho valves, or stopping the flow of water. These Pumps are worked with less friction, and consequently require less power than any other Double-Acting Pumps of equal capacity. All sizes, from 2-inch to 8-inch Cylindor, manufactored by the Pacific Iron Works, GODDARD & CO., and for sale by the Agents, 0G>Send for a descriptive Cireular. They are more durable io all their parts thao They are not liable to get out of order, aod cao at all times be removed without tho Ww. T. GARRATT, City i BRASS AND BELL FOUNDER & Cor. Mission and Fremont sts., SAN FRANCISCO. Manufacturer of Brass, Zinc, and Anti-Friction or Babbet Metal Castings; CHURCH AND STEAMBOAT BELLS, TAVERN AND HAND BELLS AND GONGS, FIRE ENGINES, FORCE AND LIFT PUMPS, Steam, Liquor, Soda Oli, Water and Fiange Cocks, and Valves of all descriptions, made and repaired. Hose and all other Joints, Spelter, Solder, and COnpEn Rivets, &c, Gauge Cocks, Cylinder Cocks, Oli Olobes, Steam Whistles, — FWYDEAULIC PIPES AND NOZZELS For Mining purposes, Iron Steam Plpe furnished with Fit. tings, &c. Hine Joints of all sizes. Particular attentlon pald to Distillery Work. Manufacturer of ''Garratt’s Pat tent Improved Journal Metal.” [. sayHighest Market price pald for OLD BELLS, COPPER AND BRASS. -@f 6tf io : . . i their light Water, or Sheffield Scientific School _ Of Yale College, New Huven, Conn, This department of Yale College, instituted in 1840, and endowed with the Natlonal Land Grant In 1866, furnishes advanced instruction In the various branches of Matbe. matical, Physical, and Natural Science. Tho School is under the direction of the President of the College, a Board of thirteen Professors in different spectal

tles, and slx assistant instructors. Regular courses of study, leading to the degree of Bach. elor of Philosophy, conferred by Yale College, are ar. ranged as follows: 1—Cuxsustuy aND MINERALOGY. 2—ClyIL ENGINEERING =3—MecHanicay Exginxyring 4—Minisg ENGINEERING AND Merautuscy. 5—AGricuLtURK. @—Nat uRnaL History AND GEOLOGY, ald 7—SxLxor Course. Advanced students are also admutied lo optional courses, and if alroady College graduates, aro recclyed as candi. By Yes dates for the degrce of Doctor of Philosophy. Seay Tuitlon, $125 per year of forty weeks, The Librarles, Museums, Lahoratorles and Apperatns, accessible to students, are varlous and expensive. For coples of the Annual Circular and Report, letters may be addresscé to the ‘*Seeretary of tile Sheffield Scientifle School," New Haven, Conn. 13v6-ty16p AMERICAN (VALTIAM) W A TCH F Se THE BEST! Ti I } aii aod can be readily taken out by loosening two THE CHEAPEST? OCKE & MONTAGUE, L 112 and 114 Battery Street, San Francisco. Tho extensive use of these Watches by Rallway Con ductors, Engincers and xpressmen, 1he most exactly noob iid wih ui Rails Newel Posts, = AND BALUSTERS, Constantly on hand for sale, and shipped, together with all kinds of STAIR WORK, Toany partof the coast. Practieal workmen sent, when desired, to put up the same. Work Warranted to Fit hy simply sending a correct ground plan of stairs, together with hight of story. ugSpanish Cedar always on hnund for sale. class of wateh wearors, has Ihvroughly demonstrated the strength, steadiness, durablilty and accuracy of the Waltham Woteh. To satisfy that class In ali these respects Is to declde the question asto the real value of these tmokeepers, More than 390,000 are thus speaking for themselves In the pockcis of the peopie. Imported watches are made on on expensive system, In smali numbers, but by numerous makers, and are placed . In tbe market hero by an jinporter, who first secures a MONOPOLY OF SALE OF SOME ONE MANUFACTURE. To the manufacturer's profit must be added the cost of . Importallon. A custom-house duty of twenty-five per cent, payahle In gold. A profit of nt least twenty-five per cent. to ihe Importer ; another to the jobber, thus doubling the cost of the lmported Watch. At Waltham, Watches are manufactured on nlarge seale under one roof and eystom of supervision and manugeKi aa Hetil a N. P. LANCLAND, STAIR BUILDER, No, 49 Beal street, i il) fi ‘i senate gy eects] Between Market and Misslon, f fA f SAN FRANCISCO. 16vl6-ly ment, theroby saving many of the expenses necessarily lu. N. W. SPAULDING, Saw Smithing and Repairing ESTABLISHMENT. Nos. 17 and 319 Fremont St., near Market, MANUFACTURER oF SPAULDING’?S Patent Tooth Circular Saws, They have proved themselves to be the most durable and economical Saws in the World. EAGH SAW 1S WARRANTED IN EVERY RESPECT: Partieular attentlon paid to eonstrection of Portable & Stationary Saw Mills. MILLS FURNISHEO AT SHORT NOTICE, At the lowest Market Prices. DUDGEON’S PATENT HYDRAULIO LIFTING-JAOKS —aAND— BOILER PUNCHES, Elghth street, cor, Minna, 84N FRANCISCO. liv36.6m16p curred in sinall cstablianments,—hence thelr groat cheapness, All respectable dealers now sell Walthnm Watehes, and competitlon, as the world knows, Is tuvorable to small protis, The trade 1s satisfied, becanse, though the profit on euch watcl is sinali, the demand ls large and all ure saleable. Unscrupulous Importers oecaslonally place a worthlcrs Swlss imitatlon Inthe market. To avoid imposition, the purchascr should Invartably demand a certificate of yeuulneness, slyned by R. E. Robbius. There are different grades ot Anish in the different varie. tles of Watches made by the Walthum Company, as thore are different sizes and shapes to sult all tastes and means; but every Wateh that beurs tho gennine trade-mark cf “Waltham,'' ls guarantecd to be a good one, aud nobody need be afraid to buy it. Every Watch Fully Warranted. For sale by all first-class dealers lu the United States nnd Britlsh Provluces. ROBBINS & APPLETON, AGENTS, 182 Brondway,. New York, B,. B. GRAY & CO., Agents for California, @16 Merchant street, Sau Francisco. W. E. LOOMIS, News Dealer AND STATIONER, pouthcast corner Sansome and MAGAZINES, Per An. cra New York Led Blackwood . Hours at Hon: Good Words,. yer Petersou’s. 3 vu) Washington strecla, ee ine BUPPLIES ALL Harper's Wee 5 OW EASTERN linporters and Wholesate Dealers ln Uhimmey Corner.. Literary Albnim.. Loudon Saciety,.. Allthe Year Roun: London Ili. News., 6. P BRIODICALS 16 Oo . By the Year, Mouth or Number. STATIONERY, Blank Books, Sehool Books, PLAYING CARDS, Wrapping Paper, Paper Bags, ete., eic, Nos. $29 and 332% Sansome street, corner Sacramonto, +o~ Special utteution given to orders [rom Country Merchants. ’ 2vléeow-19p Mrsing Peess,—This old standard mining jourual of the Pacitic Coast, cones lo us this week, nuuter i ot Yolune XVI, and much improved in several particulars A braite thulnew head and heading letters throughout, make lt the nearest, ay it has always been the best, exponent of the hndastries of Ils coast. ents miner should take the Peras. The auhserlpilon price fs $5 per yenr, and the Port. Sais at Monitor ls an authorized agent.—Alpine Miner Wy Ath.