Volume 24 (1872) (424 pages)

April 6, 1872.] SCIENTIFIC PRESS. 223 California File Manut’g Co. Potrero, Solano strect, bet. Tennesseo and Minnesuts streets, Sax Francuco, Manufacturers of New Files. Old Files re-cut and warranted equal to now, REAPER AND MOWER SECTIONS, AND KNIVES COMPLETE, atasaving of 60 per cent. Orders from tho country promptly attended to, Ovlvby Notice is hereby given, that the copartnership heretofore exinling between A. J. Soveranco, Charles W, fiandsll and J. Gus, Bart, under the frm name of * Beverance, Holt & Cu.," ls tbia duy dissolved hy inutual consent. A.J. Severance, having purchased alfthe Interest of bis lato partners, wlil continue tho husiness of manufacturing and selling Diamond Drills, as before, nuder the stylu of A. J. Severance & Co, Dated San Franclaco, Nov, 2t, 1871. Ottice, 315 Califurnia struc], A. J. SEVERANCE, CHAS. ff. RANDALL, 22. v23-tf J, GUS, BURT, BARS THEODORE KALLENBERG, MACIIINIST, and Msker of Models for Inventors. All kinds of Dics, Stamps and Puncbes made. Also, all kinda of Small Gears Cut. Repairing done on very Reasonablo Torma and {n tho best manner. No, 32 Fremont street,S. FF. 10v2u.dm WM. M, BETTS & BROTHER, CARRIAGE SPRING WORKS, 218 Fremont street, bet, Howard and Folsom, SAN FRANCISCO. LOCON,MOTIVE, CAT, And all kinda of Carriage and Wagon Springs mado to Order and Warranted. $v24-3m CALDWELI'S Improved Stop Governor, Manufactured at tho CYCLOPS MACHINE WORKS, 113 anil 115 Bealo street, San Franclsco. 3v2t-3m WM. CALDWELL. JOS. THORNHILL, Brieklayer and Contractor. Particular attention paldto all kinda of Fire Work, sucb as Bollers, Furnaces, Ovens, Grates, Ranges, cto, Orders left with C. W. Wurre, 47 Clay street, JOS. THORNHILL, 1612 Mason street, near Green, will be promptly attended to, 24v21-3m BROWN’S PATENT LAMP. 4 < 9 e io & . 2 hy a od a ra * >. 4 “ oy le & 2 : a bl 4 a ta A P3 G 3 2 cy z Ono of these Lamps, when placed at a distance of 200 feet from the bank, will light up a hank surface 250 fect In length and 100 feet high, and to a much hetter advantage than any other light heretofore tricd, and at an expense not to excocd five cents per hour. Lamps furnlshed at short notico. For further particulars address Cc. B. BROWN, Tv24d.t Placerville, Cal. NELSON & DOBLE, AGENTS FOR Thomas Firth & Sons’ Cast Steel. a . MANUFACTURERS OF Sledges, Hammers, Stone Cutters’, Black smiths’ ond Horse-Sheers’ Tools, ‘ 13 and 15 Fremont street, near Market, San Francis 4qr SHEET IRON PIPE. nGELIe Risdon Iron and Locomotive Works Corner Howard and Beale Strects, Are prepared to make SHEET IRON AND ASPHALTUM PIPE, of sny size and for any pressure, and contract to lay the same whero wanted, guaranteelng a perfect working plpe with the least amount of materlal. All kinds of CAR WHEELS, AXLES and RAILROAD WORK made to order, Standard sizes of Wheels constsntly on hand. Whcels hored and pressed on, Axles turned, etc., at Ressonable Rutes. BS All kinds of Machinery mado and repaired, BLAKE’S PATENT STEAM PUMPS, WHAT IS SAID BY THOSE WHO USE THEM. SALEM, Oregoa, January l6éth, 1572. Mousns. BERRY & PLACE, San Francisco—Gantlemen: Inanswerto yaurquory regarding tha workiag of the largoBlake Steam Pump, Onr company parchased afyou, wa would eay In all sincerity that the pamp Aaz erevelal our expectation, It has beon In nsa since the 27th of Septembor, 143], aad bas thus far given the most perfect satisfaction. It does its work witb case, doca not get oat of order, and reqnires but Ilttle or no atteation tornnit, It is SIMrLe, NUBABLE, and PEurEcT In ita constraction. We hava fonnd it antlrely satlafectory and just the pump ts every respect needed for our work. Youry, respectfully, W, F, DOOTILY, Pres't Salem Water Works. PIHGNIX MINE, Napa County, Jaausry 10th, 1832, Mrasia. BERRY & Pf.ACE, San Franclsco—Gentlemea: Tho No.8, ftake Steam Pump we toaght of yoa last fall is doing xood service. Wo ara having a larg: amonnt of water to contuni with duriag this stormy weathar; but tha pump throws it all out of the main shaft (160 foot deep) with perfect case, ani it only working fro 60 to 89 strokes a minute, ft lsacomplote pump and no mixtake, Woe ary well satinfied with ita working, end if you wisli to use the name of our company, 20.8 roforenca, youarv atlibertyto do so, Vory resp’tly, GLO. FELLOWS, Supt. Phenix Quicksllver M. Oo, OFFICE STARR MILLS, VALLESO, Cal,, January 13th, 1972. Mesans RERRY & PLACE, San Franclsco—Gentlumon: We aro pleased to state that the No. 3 Blake Pump purchasol of you, has constantly suppliod our three beilers for the past ycar, with water heat to above holliag point with one of Armetroug’s Patent Heaters, It has given os ao trouble nor oxpease, and has ia {uct fully come up to your recommendatlons. Yours, Ete., STARR BROS, & CAMPBELL. OFFICE S. J, WOOLEN{[CO., SAN JOSE, Jaauary 29th, 1872. Mesans. BERRY & PLAOE, San Francisco—Gentlomoen: We have uscd a No. 6 Blako Steam Pump aow for about two years, botb as a Tank Puiup and asaFire Pump la caso of aecd: and it has givon axccllont satisfaction. Jt suite us fn erery rexpect, Vory respect fully, RF. PECKIAM, Pros't San Joso Wooion Co, BELMONT, Cal., Febraary 6th, 1872. Measns. TREADWELL & CO.—Geutlomoa: Ia reply to sour Inquiry concerning the large Blake Steam Pump, pnrchased of Berry & Place, hy Mr. Ralston, I will say, that it gives ENTIRE auticfuction, even Working 43 It now is, whora no other Pomp could; for it laut present eix feet under water, got it does ita work PEN FECTLY, Yours, Ete., J, E. BUTLER, Supt. Water Works and Engincer at W. C. Ralston’s. BLAKE’S PATENT STEAM PUMP. _ These Pumps have beeu tested, and fonnd to he Pade without an egnal wherevor tried, They have heen sold in tho Pacitio States now for nearly three yeurs, and wv are willing every oae in use may be referred to; evory Pup will speuk foritsolf, ‘They are constructed iu the most simple style, and halt in the most thorough manner—especially caloulated for simplicity, durability and power. Some of the advantages of the Blako Pump may be summed up as follows: lt is positivo uaiier any presMining and Fire purposes; in suro. May bo run slow or Inst Brewerics, Tanneries, Sugar as may be desired. Will disHouses, Mactories, Mills, Launcharge more water thaa any dries, and a4 Boiler Feoders, others of the sniao dimensions, whorever steam is omployed. fn las no leaky joints, the steam fuct, wherever water or other Part being cast in one cutire liquids are desired to he raised piece. ‘Ihe steam valve is perin large or small quantities, or lectly balanced, 13 cushioacd at against post orhght pressure, each end, and slides with the it is tho cheapest and best greatest facility Aacing no csine, ‘i poy complex rotary urrrongements to get ont of order, Will start at any peintos the stroke, and will discharge all the water of condensation. The Pup has ao erank or tly-wheel, therchy savjuga coasidurahle item of exas ponso to the purchaser. Huving SSI sodead points, it therelore needsno watching, aad iscoasequentSS ly ready to start without usin a starting bar or any haud wor! whatever. The Blako Pump is extensively used oa Railroads pony was awarded uw silver and Stenmboats, in Hotels; for Medal at the exlihition of the Mechanics’ Institute, San Franciseo, and State lair at Sacramento, as being the hest #teain Pump on exhibition. The agents buve recently imported several of the largrst-sized Minin Pointy for water works, and decop miacs, and will be leaseil to refer partics to them; we claim for it, that it is the most simple and dnrable,and coasequently the hest Steam ump ever built. For sulo hy TREADWELL & CO., Machinery Depot, old stand, corner of Market and remont aa San l'raacisco, who will he ploased to send circulars to auy address, or show ils advaatagos to parties calling oa 10. Hand Power Lover dotached. Pump that can bo used. It is offered to the pnblic as the most perfcct independent steam Pump ever inveated. Forty different sizcs are made, capa ble of throwing from 1,000 to 200,000 gallons aa hour, aud adapted to aay class of work that may bo require. Every inp Will be warraated to per‘orm the work required of it hy the purchaser, or it may be re-~ turned aad the money will be cheerfully rotunded. The Blake It has no Cams or Rotary Complex Valves. It has stood the test wherever tested. IT IS SIMPLE, COMPACT, DURABLE, AND POWERFUL. tar Manufactured by Geo, I. Blake & Co., Boston, who build and have on hand a larger variety of Steam Pumps than nny other concern in the country, embracing forty different sizes, and capable of throwing from 1,000 to 200,000 gallons an hour, and adapted to every description of work required. (2°Send for circular and prices. The largest stock in the country at the Machinery Warchouso of TREADWELL & CQO., Manufacturers’ Agents, corner Market and Front Streets, Sap Francisco. {2° Machinery Depot for Mincrs, Millmen, and Engineers’ Supplies. Iron and Wood Machinery; Portable Engines; Mills; Machinists’ and Mechanics’, Miners’ and Farmers’ Tools; Sturtevant’s Blowers, Turbine Waterwhcels, Etc., Ete. 6v24-ecowbp Hxtraect from Official Report of Mechanics’ Institute Fair of San Eranciseco, IS7h. “Tn the foregoing trials it appears that the most efficient Pump on oxhihition is the KNOWLES, Tho worlmanship on this Pump is also very good. We would therefore recommend thst this Pump receive a Silver Medal, (Diploma awarded). Signod hy the Committeo: 0. W. DICKIE, H. B. ANGELL, liv3-awhp CHAS, R, STEIGER, W. EPPELSHEIMER, MELVILLE ATWOOD.” CAMERON'S STEAM PUMPS. PIOKERING'S Engine Regulators, GIEFARD'S INJECTORS. BARTOL'S STEAM TRAP. Surface Condensers. DAVID STODDART, 114 BEALE STREET, S. F. San Francisco Boiler Works, 123 and 125 Beale Street, San Francisco. F. I. CURRY (late Foreman of the Vulcan Iron Works), Proprietor. High and Low Sheet Iron Work %y22-3m JOSEPH MOORE, Superi dent J. M. STOCKMAN, Manufacturer of PATTERNS AND MODELS, (Over W. T. Garratt's Brass Foundry). En N. W. corner Natoma and Fremont streets, 8. F. 6y23-3m. trance on Natoma streot. Pressure of evory DESCRIPTION BOILERS done at tho of alld ious, Shortest Notice. = All kinds of BOLE JOBBING Manufacturers of the and Repairing a Promptly Attended SPIRAL BOILER. to, Metallurgy and Ores. RODGERS, MEYER & Co., COMMISSION MERCIIANTS, ADVANOES MADE On alt kloda of Ores, and particular nttentlos PAID TO CONSIGNMENTS OF GOODS, 4¥16-3m LOUIS FALKENAU, STATE ASSAYER, Analytical and Consulting Chemist, 421 Montgonery St. up stalwa, Particular altentlon glven to the Analyels of Ores, Minerals, Metallurgical Produdts, Mlncral Waters, Solls, Commercial Articles, Ete. One or two pupils can recelye theoretlcal and practlcal Instrucllon in Assaylng, Analyels, or any particnlar branch of Chemlstry at the laboratory, llv2i-3m LEOPOLD KUH, {Formerly of the U, 8. Branch Mint, 8. F.) Assnyer and Metallurgica?! CIieMIST, No. G11 Commerctul Street, {Opposite the U.8. Branch Mint, Ban Francisco, Car, Tv21-303 NEVADA METALLURGICAL WORKS. 19 und 21 First st., ln Golden State Foundry, RIOTTE & LUCKHARDT. Ores Crushed, Sumpled and Ansanyed, Having added Pans, Assay offieo and Chlorination Apparatus to our estshlishment, we are now prepared to make working tests by any proccess, askay ores and products. Returnaguarranteed, Answers to all metallurlcal qnes tluns given, 26v21-3m J. WwW. THURMAN, (Successor to S. W. Howland & Co.,) ORE CRUSHERS AND SAMPLERS, Nos, £413 and 415 Mission Street, SAN FRANOISCO. Particular attention paid to Ores received on consignment. ALL ONNERS EXECUTED AT THE SHONTEST NOTICE. 5v24-6m, CALIFORNIA ASSAY OFFICE No, 513 CALIFORNIA STREET, One Door West of Montgomery... San FRANoIs00, J. A. MARS, Assayer. aa Analysis of Ores, Mineral Waters, etc, 10v20 G,. W. BTRONG, W, L. STRONG Cc. W. STRONG & CO., Metallurgical Works, No, 10 Stevenson Street, near First, San Franoisoo Wo purchsse Ores, Bullion, etc, Ores worked and Tests made with caro. Also, Assays of Gold, Silver, Copper, Lead, Tin and other Metsls. 29y22tf PLATINUM Vessels, Apparatus, Sheet, Wire, Etc, Etc. For all Lahoratory and Manufacturing Purposes H, M RAYNO: 25 Bond street, New York. Pistinum Scrap and Ore prrchased. 22yv18 JOHN TAYLOR & C0., IMPORTERS OF AND DEALERS IN ASSAYERS’ MATERIALS, Chemical Apparatus and Chemicals, Druggists’ Glassware and Sundries, PHOTOGRAPHIC GOODS, ETC., 512 ‘and 514 Washington street, SAN FRANCISCO. We would call tho special attention of Asssyers, Chemlsts, Mining Companies, Milling Compsnies, Prospectora, etc., to our large and well adapted stock of ASSAYERS’ MATERIALS =anp— Chemical Apparatus, Having heen engaged in furnlshing these supplies sinco the first discovery of mines on tho Pacific Coast. WE ENUMERATE IN PART: Assay Balauces—L, Oertlings, London. Assay Balancea—Becker & Sons, Antwerp. Chemical Balances—Becker & Sons, Anlwerp. Ore or Pulp Balances—Becker & Sons, Antwerp. Assay Weights—Grains ond Orammes. Bullion Balances and Weights. Humid Assay Apparatus. Iron Furnsccs—Improved, Lined with Fire Brick for Cupelling and Melting. Tongs, Mufiics, Cupel Moulds, Assay Moulds, Scorifters, Roasting Dishes, Annealing Cups, French Clay, Assay Crucibles, Hessiau jor Sand) Crucihles. Dixon's Celehrated Black Lead Crucibles aud Covers— all sizes. Assay ers’ and Chemical Glassware snd Assaycre' Hardwaro~ a {ll assortment. Steel Stamps for hais cut to order. ACIDS AND CHEMICALS, Acid in carhoys and bottles, commercially and chemi cally pure, Bi Carh. Soda, Borax, Bone Ashes, Litharge, Assay Lead in hars, rolled and granulated. Black Oxide Manganese, Sodium and Sodium Amalgam, Sulphate of Copper, Quicksilver, and all Chemicals snd Reagents required hy Assayers and Milling Co.'s. kG Our Gold and Silver Tahles, showing the value per ounce Troy at different degrees of fineness, and valuable tables for computation of assays in Gralns and Orammes, wll be sent upon application. 24v23-tf JOHN TAYLOR & CO,

April 6, 1872.] SCIENTIFIC PRESS. 223 California File Manut’g Co. Potrero, Solano strect, bet. Tennesseo and Minnesuts streets, Sax Francuco, Manufacturers of New Files. Old Files re-cut and warranted equal to now, REAPER AND MOWER SECTIONS, AND KNIVES COMPLETE, atasaving of 60 per cent. Orders from tho country promptly attended to, Ovlvby Notice is hereby given, that the copartnership heretofore exinling between A. J. Soveranco, Charles W, fiandsll and J. Gus, Bart, under the frm name of * Beverance, Holt & Cu.," ls tbia duy dissolved hy inutual consent. A.J. Severance, having purchased alfthe Interest of bis lato partners, wlil continue tho husiness of manufacturing and selling Diamond Drills, as before, nuder the stylu of A. J. Severance & Co, Dated San Franclaco, Nov, 2t, 1871. Ottice, 315 Califurnia struc], A. J. SEVERANCE, CHAS. ff. RANDALL, 22. v23-tf J, GUS, BURT, BARS THEODORE KALLENBERG, MACIIINIST, and Msker of Models for Inventors. All kinds of Dics, Stamps and Puncbes made. Also, all kinda of Small Gears Cut. Repairing done on very Reasonablo Torma and {n tho best manner. No, 32 Fremont street,S. FF. 10v2u.dm WM. M, BETTS & BROTHER, CARRIAGE SPRING WORKS, 218 Fremont street, bet, Howard and Folsom, SAN FRANCISCO. LOCON,MOTIVE, CAT, And all kinda of Carriage and Wagon Springs mado to Order and Warranted. $v24-3m CALDWELI'S Improved Stop Governor, Manufactured at tho CYCLOPS MACHINE WORKS, 113 anil 115 Bealo street, San Franclsco. 3v2t-3m WM. CALDWELL. JOS. THORNHILL, Brieklayer and Contractor. Particular attention paldto all kinda of Fire Work, sucb as Bollers, Furnaces, Ovens, Grates, Ranges, cto, Orders left with C. W. Wurre, 47 Clay street, JOS. THORNHILL, 1612 Mason street, near Green, will be promptly attended to, 24v21-3m BROWN’S PATENT LAMP. 4 < 9 e io & . 2 hy a od a ra * >. 4 “ oy le & 2 : a bl 4 a ta A P3 G 3 2 cy z Ono of these Lamps, when placed at a distance of 200 feet from the bank, will light up a hank surface 250 fect In length and 100 feet high, and to a much hetter advantage than any other light heretofore tricd, and at an expense not to excocd five cents per hour. Lamps furnlshed at short notico. For further particulars address Cc. B. BROWN, Tv24d.t Placerville, Cal. NELSON & DOBLE, AGENTS FOR Thomas Firth & Sons’ Cast Steel. a . MANUFACTURERS OF Sledges, Hammers, Stone Cutters’, Black smiths’ ond Horse-Sheers’ Tools, ‘ 13 and 15 Fremont street, near Market, San Francis 4qr SHEET IRON PIPE. nGELIe Risdon Iron and Locomotive Works Corner Howard and Beale Strects, Are prepared to make SHEET IRON AND ASPHALTUM PIPE, of sny size and for any pressure, and contract to lay the same whero wanted, guaranteelng a perfect working plpe with the least amount of materlal. All kinds of CAR WHEELS, AXLES and RAILROAD WORK made to order, Standard sizes of Wheels constsntly on hand. Whcels hored and pressed on, Axles turned, etc., at Ressonable Rutes. BS All kinds of Machinery mado and repaired, BLAKE’S PATENT STEAM PUMPS, WHAT IS SAID BY THOSE WHO USE THEM. SALEM, Oregoa, January l6éth, 1572. Mousns. BERRY & PLACE, San Francisco—Gantlemen: Inanswerto yaurquory regarding tha workiag of the largoBlake Steam Pump, Onr company parchased afyou, wa would eay In all sincerity that the pamp Aaz erevelal our expectation, It has beon In nsa since the 27th of Septembor, 143], aad bas thus far given the most perfect satisfaction. It does its work witb case, doca not get oat of order, and reqnires but Ilttle or no atteation tornnit, It is SIMrLe, NUBABLE, and PEurEcT In ita constraction. We hava fonnd it antlrely satlafectory and just the pump ts every respect needed for our work. Youry, respectfully, W, F, DOOTILY, Pres't Salem Water Works. PIHGNIX MINE, Napa County, Jaausry 10th, 1832, Mrasia. BERRY & Pf.ACE, San Franclsco—Gentlemea: Tho No.8, ftake Steam Pump we toaght of yoa last fall is doing xood service. Wo ara having a larg: amonnt of water to contuni with duriag this stormy weathar; but tha pump throws it all out of the main shaft (160 foot deep) with perfect case, ani it only working fro 60 to 89 strokes a minute, ft lsacomplote pump and no mixtake, Woe ary well satinfied with ita working, end if you wisli to use the name of our company, 20.8 roforenca, youarv atlibertyto do so, Vory resp’tly, GLO. FELLOWS, Supt. Phenix Quicksllver M. Oo, OFFICE STARR MILLS, VALLESO, Cal,, January 13th, 1972. Mesans RERRY & PLACE, San Franclsco—Gentlumon: We aro pleased to state that the No. 3 Blake Pump purchasol of you, has constantly suppliod our three beilers for the past ycar, with water heat to above holliag point with one of Armetroug’s Patent Heaters, It has given os ao trouble nor oxpease, and has ia {uct fully come up to your recommendatlons. Yours, Ete., STARR BROS, & CAMPBELL. OFFICE S. J, WOOLEN{[CO., SAN JOSE, Jaauary 29th, 1872. Mesans. BERRY & PLAOE, San Francisco—Gentlomoen: We have uscd a No. 6 Blako Steam Pump aow for about two years, botb as a Tank Puiup and asaFire Pump la caso of aecd: and it has givon axccllont satisfaction. Jt suite us fn erery rexpect, Vory respect fully, RF. PECKIAM, Pros't San Joso Wooion Co, BELMONT, Cal., Febraary 6th, 1872. Measns. TREADWELL & CO.—Geutlomoa: Ia reply to sour Inquiry concerning the large Blake Steam Pump, pnrchased of Berry & Place, hy Mr. Ralston, I will say, that it gives ENTIRE auticfuction, even Working 43 It now is, whora no other Pomp could; for it laut present eix feet under water, got it does ita work PEN FECTLY, Yours, Ete., J, E. BUTLER, Supt. Water Works and Engincer at W. C. Ralston’s. BLAKE’S PATENT STEAM PUMP. _ These Pumps have beeu tested, and fonnd to he Pade without an egnal wherevor tried, They have heen sold in tho Pacitio States now for nearly three yeurs, and wv are willing every oae in use may be referred to; evory Pup will speuk foritsolf, ‘They are constructed iu the most simple style, and halt in the most thorough manner—especially caloulated for simplicity, durability and power. Some of the advantages of the Blako Pump may be summed up as follows: lt is positivo uaiier any presMining and Fire purposes; in suro. May bo run slow or Inst Brewerics, Tanneries, Sugar as may be desired. Will disHouses, Mactories, Mills, Launcharge more water thaa any dries, and a4 Boiler Feoders, others of the sniao dimensions, whorever steam is omployed. fn las no leaky joints, the steam fuct, wherever water or other Part being cast in one cutire liquids are desired to he raised piece. ‘Ihe steam valve is perin large or small quantities, or lectly balanced, 13 cushioacd at against post orhght pressure, each end, and slides with the it is tho cheapest and best greatest facility Aacing no csine, ‘i poy complex rotary urrrongements to get ont of order, Will start at any peintos the stroke, and will discharge all the water of condensation. The Pup has ao erank or tly-wheel, therchy savjuga coasidurahle item of exas ponso to the purchaser. Huving SSI sodead points, it therelore needsno watching, aad iscoasequentSS ly ready to start without usin a starting bar or any haud wor! whatever. The Blako Pump is extensively used oa Railroads pony was awarded uw silver and Stenmboats, in Hotels; for Medal at the exlihition of the Mechanics’ Institute, San Franciseo, and State lair at Sacramento, as being the hest #teain Pump on exhibition. The agents buve recently imported several of the largrst-sized Minin Pointy for water works, and decop miacs, and will be leaseil to refer partics to them; we claim for it, that it is the most simple and dnrable,and coasequently the hest Steam ump ever built. For sulo hy TREADWELL & CO., Machinery Depot, old stand, corner of Market and remont aa San l'raacisco, who will he ploased to send circulars to auy address, or show ils advaatagos to parties calling oa 10. Hand Power Lover dotached. Pump that can bo used. It is offered to the pnblic as the

most perfcct independent steam Pump ever inveated. Forty different sizcs are made, capa ble of throwing from 1,000 to 200,000 gallons aa hour, aud adapted to aay class of work that may bo require. Every inp Will be warraated to per‘orm the work required of it hy the purchaser, or it may be re-~ turned aad the money will be cheerfully rotunded. The Blake It has no Cams or Rotary Complex Valves. It has stood the test wherever tested. IT IS SIMPLE, COMPACT, DURABLE, AND POWERFUL. tar Manufactured by Geo, I. Blake & Co., Boston, who build and have on hand a larger variety of Steam Pumps than nny other concern in the country, embracing forty different sizes, and capable of throwing from 1,000 to 200,000 gallons an hour, and adapted to every description of work required. (2°Send for circular and prices. The largest stock in the country at the Machinery Warchouso of TREADWELL & CQO., Manufacturers’ Agents, corner Market and Front Streets, Sap Francisco. {2° Machinery Depot for Mincrs, Millmen, and Engineers’ Supplies. Iron and Wood Machinery; Portable Engines; Mills; Machinists’ and Mechanics’, Miners’ and Farmers’ Tools; Sturtevant’s Blowers, Turbine Waterwhcels, Etc., Ete. 6v24-ecowbp Hxtraect from Official Report of Mechanics’ Institute Fair of San Eranciseco, IS7h. “Tn the foregoing trials it appears that the most efficient Pump on oxhihition is the KNOWLES, Tho worlmanship on this Pump is also very good. We would therefore recommend thst this Pump receive a Silver Medal, (Diploma awarded). Signod hy the Committeo: 0. W. DICKIE, H. B. ANGELL, liv3-awhp CHAS, R, STEIGER, W. EPPELSHEIMER, MELVILLE ATWOOD.” CAMERON'S STEAM PUMPS. PIOKERING'S Engine Regulators, GIEFARD'S INJECTORS. BARTOL'S STEAM TRAP. Surface Condensers. DAVID STODDART, 114 BEALE STREET, S. F. San Francisco Boiler Works, 123 and 125 Beale Street, San Francisco. F. I. CURRY (late Foreman of the Vulcan Iron Works), Proprietor. High and Low Sheet Iron Work %y22-3m JOSEPH MOORE, Superi dent J. M. STOCKMAN, Manufacturer of PATTERNS AND MODELS, (Over W. T. Garratt's Brass Foundry). En N. W. corner Natoma and Fremont streets, 8. F. 6y23-3m. trance on Natoma streot. Pressure of evory DESCRIPTION BOILERS done at tho of alld ious, Shortest Notice. = All kinds of BOLE JOBBING Manufacturers of the and Repairing a Promptly Attended SPIRAL BOILER. to, Metallurgy and Ores. RODGERS, MEYER & Co., COMMISSION MERCIIANTS, ADVANOES MADE On alt kloda of Ores, and particular nttentlos PAID TO CONSIGNMENTS OF GOODS, 4¥16-3m LOUIS FALKENAU, STATE ASSAYER, Analytical and Consulting Chemist, 421 Montgonery St. up stalwa, Particular altentlon glven to the Analyels of Ores, Minerals, Metallurgical Produdts, Mlncral Waters, Solls, Commercial Articles, Ete. One or two pupils can recelye theoretlcal and practlcal Instrucllon in Assaylng, Analyels, or any particnlar branch of Chemlstry at the laboratory, llv2i-3m LEOPOLD KUH, {Formerly of the U, 8. Branch Mint, 8. F.) Assnyer and Metallurgica?! CIieMIST, No. G11 Commerctul Street, {Opposite the U.8. Branch Mint, Ban Francisco, Car, Tv21-303 NEVADA METALLURGICAL WORKS. 19 und 21 First st., ln Golden State Foundry, RIOTTE & LUCKHARDT. Ores Crushed, Sumpled and Ansanyed, Having added Pans, Assay offieo and Chlorination Apparatus to our estshlishment, we are now prepared to make working tests by any proccess, askay ores and products. Returnaguarranteed, Answers to all metallurlcal qnes tluns given, 26v21-3m J. WwW. THURMAN, (Successor to S. W. Howland & Co.,) ORE CRUSHERS AND SAMPLERS, Nos, £413 and 415 Mission Street, SAN FRANOISCO. Particular attention paid to Ores received on consignment. ALL ONNERS EXECUTED AT THE SHONTEST NOTICE. 5v24-6m, CALIFORNIA ASSAY OFFICE No, 513 CALIFORNIA STREET, One Door West of Montgomery..... San FRANoIs00, J. A. MARS, Assayer. aa Analysis of Ores, Mineral Waters, etc, 10v20 G,. W. BTRONG, W, L. STRONG Cc. W. STRONG & CO., Metallurgical Works, No, 10 Stevenson Street, near First, San Franoisoo Wo purchsse Ores, Bullion, etc, Ores worked and Tests made with caro. Also, Assays of Gold, Silver, Copper, Lead, Tin and other Metsls. 29y22tf PLATINUM Vessels, Apparatus, Sheet, Wire, Etc, Etc. For all Lahoratory and Manufacturing Purposes H, M RAYNO: 25 Bond street, New York. Pistinum Scrap and Ore prrchased. 22yv18 JOHN TAYLOR & C0., IMPORTERS OF AND DEALERS IN ASSAYERS’ MATERIALS, Chemical Apparatus and Chemicals, Druggists’ Glassware and Sundries, PHOTOGRAPHIC GOODS, ETC., 512 ‘and 514 Washington street, SAN FRANCISCO. We would call tho special attention of Asssyers, Chemlsts, Mining Companies, Milling Compsnies, Prospectora, etc., to our large and well adapted stock of ASSAYERS’ MATERIALS =anp— Chemical Apparatus, Having heen engaged in furnlshing these supplies sinco the first discovery of mines on tho Pacific Coast. WE ENUMERATE IN PART: Assay Balauces—L, Oertlings, London. Assay Balancea—Becker & Sons, Antwerp. Chemical Balances—Becker & Sons, Anlwerp. Ore or Pulp Balances—Becker & Sons, Antwerp. Assay Weights—Grains ond Orammes. Bullion Balances and Weights. Humid Assay Apparatus. Iron Furnsccs—Improved, Lined with Fire Brick for Cupelling and Melting. Tongs, Mufiics, Cupel Moulds, Assay Moulds, Scorifters, Roasting Dishes, Annealing Cups, French Clay, Assay Crucibles, Hessiau jor Sand) Crucihles. Dixon's Celehrated Black Lead Crucibles aud Covers— all sizes. Assay ers’ and Chemical Glassware snd Assaycre' Hardwaro~ a {ll assortment. Steel Stamps for hais cut to order. ACIDS AND CHEMICALS, Acid in carhoys and bottles, commercially and chemi cally pure, Bi Carh. Soda, Borax, Bone Ashes, Litharge, Assay Lead in hars, rolled and granulated. Black Oxide Manganese, Sodium and Sodium Amalgam, Sulphate of Copper, Quicksilver, and all Chemicals snd Reagents required hy Assayers and Milling Co.'s. kG Our Gold and Silver Tahles, showing the value per ounce Troy at different degrees of fineness, and valuable tables for computation of assays in Gralns and Orammes, wll be sent upon application. 24v23-tf JOHN TAYLOR & CO,