Volume 17 (1868) (428 pages)

112 The Mining and Scientific Press. Wuart can. be sean at Woodwards? Almost everything in nature. It is a little world in itself, with fountains, brooks and lakes, with green and grassy lawns, with every variety of bird and beast, plants and fruit, statnes and pictures, eggs, shells and minerals. What cannot be found at Woodwards Gardens?Removan.—Our friends will please bear in mind that the Mixine anp ScImNTIFIO Press Office, Patent Agency ‘and Job Printing Office has been removed from 505 to 414 Clay street, about half a block below Sansome. Valuable Books on Mining, Mineralogy, Geology, Metallurgy, Etc. ANSTED’S Gold Seekers Mannal. 1 vol. 12mo. eloth..+ RGR OBRRC . BAGO enone deenenseenenere $l? ANTISELL.—The Manufacture of Photoeuie or Hydro-Carbon Olls, from Coal and other Eituminous Substances, capable of supplying Burntng Finids. By Thomas Antisell, M.D. I vol. 8vo. BARSTOW—Sulphurets ; What they are, How Concentrated, How Assayed, and How Worked; With a Chapter on the Blow-pipe Assay ot Minerais: lyvol 12ino. elotb . . BLAKE, W. P.—Geologieal Reconnoissanee ln California in 1863-4. 4to., with plates, maps, seetions, cte.. ueceeneaaeeee tase 1 « 1000 BLAKE, W. P.—Silver Ores and Silver Mines, ete. 8vo 200 BLAKE, W. P.—Mining Magazine and Journal of Geology, t@. BYO..0002) oe Bihascon osenge 500 BLAKE, W. P.—Annotated Catalogue of California Minerals. 8yo o BUCKLAND (Rev. Wm.)— Geology and Mineralogy. 2 ois. 8v0. Cloth. ccceeeceeeereeeeeeee +19 00 BOURNE (John)—Handbook of the Steam Engine, {liustrated. 2 vol. 12mo, cloth,. .. . 300 VONGDON.—Mining Laws and Fortas 0! California and Nevada, and tho Mining Ordinances ot Mexico. 184 pp. 8yo} fiexibie cioth ; t86t. (The only Comrpllation ONtaNt .ecsccecereseesseeseceneeees 2 BD DUFRENOY, — Mineralogie. 5 volumes, BV Ose ce ennnesenneeees tenn neeeeeeee eeeeaee . »» 20 00 DANA’S Manual of Mineralogy. Revised edition. 260 iilustratlons. lzmo. cloth. New Haven, 1863. School Edition. DANA’S Mannal of Geology. Numerous Illustrations, 8vo. haifmoroceo, Pbiladelphia, 1863. 6 75 DANA’S Text-Book of Geology. Illustrated. 12ino, cloth. Phiiadelphia, 1864... ELDERHORST’S Blowptpe.—Analysis and Deterininatlye Mineralogy. hird editlon, revised. Bro. cloth. Philadelphia, 1866....05 Beecmnee 1 FAIRBAIRN. —Iron: its History, proper tles, and Proecessesof Manufacture By Win. Fairbalru, GC. E., LiL. D, lvol. 8vo. New Editioa.. 5 GOODYEAR’S Translation. A Treatise on tho Assaying of Copper, Silver, Lead, Goid and Mercury, lrom the German of Th. Bodeman and Bruno Kerl. I vol. 12mo. Cloth.-..0.00s eee et eee eee 2 50 HUMBLE.—Dictionary of Geology and Mineraiogy. Third Edition, Koviyed 1 vol. 8vo. cloth. 9 00 HOSKOLD'S Practical Treatise on Mining Land aud Railway Surveying. Eugineering, Ete. Lol. 8V0, CLOtN. ecee eee e eee e en eeee eee eee bosons Bence . KUSTEL.—Novada and California Processes of Silver and Gold Extraction, for pauerl use, and especially for the Miniug Public of Callfornia and Nevada; also, a description of the General Metal+ 6 00 lurgy of Siiver Ores, y Guido Kustel, Muilng Engineer. illustrated by accurate eugraviag. 1 vol. &vo. cloth. . KUSTEL.—A Treatise on Coneentration of 9 ali Kinds of Ores: Ineluding tbe Chlorinatlon Proeess for Gold Bearlng Sulphurets, Arseniurets, and Gold and siiver Ores Generally. ny Guldo Kustel, Mining Engineer and Metailurgist. lilustrated with 120 diagrnms 0a 7 pilates. Ll vol. 8vo. eloth... 7 5 LAMBORN.—Rudimental Troatise on the Metallurgy of Copper. 1 vol. l2mo. ilmp cloth. WUSt rated cores ee cece ene . LAMBORN.—Rudimentary Treatise on the Metallurgy of Sliver aad Lead. 1 vol. 1: ciouh. Illustrated... 100 MITCHELL’S Manual of Praetical Assay++ 10 50 Ing. 1 vol. 8vo. eioth.. Fees oe Sere O A MAKINS.—A Manual of Metallurgy, more articuiarly of the Precious Metals, including the Tethods of Assnying them. By G. EH. Makins. ivol. Ral) cioth. lilustrated by upwards of 50 engravTES. eeeseneeeeeee _ oc gape do agana nepeo.codpagabe Oherosoc OVERMAN (Fred.)—A Treatiso on Metallurgy ; Comprisiag Miaing, and General and Partleular Mctaliurgicai Operatious. 1 vol. 8vo. cloth. PIGGOT.—The Chemistry and AMaeileegey ® of Copper. By A. Snowden Piggot, M. D. 1 vol. 12ine. cloth. PHILLIPS AND DARLINGTON.—Reeords ot Mining and Metaliurgy; or, Facts and Memoranda for the Use of Mine Agents and Smelters By A. Phillips aud John Dariingtou. 1 voi. 12mo. eloth PERCY (John).— Metallurgy; the Act of Extracting Metals from thelr Ures, and adapting them to various Purposes ot Mauufucture. Iron and Steel. lvol. 8vo. cloth. . .s.cceerensee te eennes . PLATTNER AND MUSPRATT on the Use of the Blowpipe. 47 Diagrams. Third edltion, revised. Svo, ctoth. London, 1834...e:ecere Practical Use of the Blowpipe ; being a Grad\ated Course of Analysis. lémo. eioth. New York, VYSG oes eset ence ene e eee ee eeneee 200 SUOFFERN’S Useful Metals and their Alloys. lL vol. cloti... = mare celencneweme™ SMITH’S Blowpipe— Vade-Mecum. The iowpipe. Churacters of Minerais Alphabetically Arranged. 8vo. cloth. London, 1802....66 : URE’S Dictionary of Arts, Manufactures and Mines. 2,300 Eugravings. From last London edition. 3 vols, 8vo. cloth. New York.... oS WHEELER & RANDALL’S Quartz Operator'’s ILuulbook. Fiexible cloth, l2mo. Sau FranGIRO LGD .ecesaseesnesenen cones WHITNEY.—A Geological Survoy of Californla. Keport of Kleid Work from 1860 to 1864. By J.D. Whitney. Per. vol quarlo.ssereeee eee scersee 600 Auy of the abovo Books will be furnished by return mail or express, on receipt of the price with postage added. Any other books desired will also ho furnished ut the lowest San Francisco retail prices, Address, DEWEY & Co., Miuing and Scientilie Press Office, San Franciseo 1ivi3-lana tf ~ & 13 50 6 00 5 50 100 Fig. 1 is a perspective view of that . American and Foreign Patents th Fig. 2. It should be borne in miad that Mr. Hungerford is the original builder and maker of the eelebrated Prater Concentrator, und his name sbould be sufficient guarantee to warrant the public in examining his new maehine hefore purehasing elsowhero. RECOMMENDATIONS: M. Honxcerrorp, Esq.—Dear Sir :-—Having opinion, the best Concentrator now in use. Yours Very respectfully, well as they are represented to do. Address, Goss & Lambard, Sacramento, or M. HUNGERFORD’S IMPROVED CONCENTRATOR, Por Saving Gold, Salphurets, Quicksilver, ete. Fin. 1 There is no deseription of machinery of so mueh importanee to tho mining interests of California, at the present time,as that for the separation of sulphurets. Many machines have been tried, and ahandoned; and none seems to meet the requircment of the mining interest so well as that now patented by Mr. Hungerford, which is au improvemeat on the well known Huagerford & Prator Coneentrator, with whieh his name is already so fumiliar. pan as now eonstrueted. Wor economy of space and maehinery, one shaft is made to drive two pans, which are set and arranged as shown in the eagraving. Fig 2 is a section through the eenter of the pan, showing how it operates in separating the sulphnrets, as well as the great improvement to the pan, which consists of the addition of a eirculur trongh outside @ periphery. A full description of the principle and mode of action of this pan, is described in circulars, witich will ba forwarded to any party who may desire them. NeEwcastTLe, Cal., June 21, 1868. used oight of your improved Concentrators (built by Goss & Lambard, of Sacramento), it affords me pleasure to bear testimony to their efficiency und adaptation to the purposes for which they are designed. I have uscd various styles of Concentrutors during the last five years, but have found nothing that begins to compare with your machine, for durability and thorough concentration; and I ean _eonfidently reeomineud them to mitllinen, heing, in my truly, J. C. Corgy. Newcast.g, Placer Couaty, Cal., Tune 23, 1868. Mr. Morcar Hunczerrorn, Esq.—Dear Sir:—After witnessing tho operatton of eight of your Coneentrators for a month, in the Golden Rulo mill, Placer Connty, and running the same nunher in the Mt. Pleasant mill, El Dorado County, I am satisfied they are superior, as Concentrators, and more durablo and less liuble to get out of order, than any Concentraters I havo seen; and I rovommond them to millmen, feeling assured they will, after tho most thorough trial, he pleased with them. L, E. Arcursox, Metellurgist. Bie Oax Frat, May 23, 1868.—r. Thos. Mulford—Dear Sir:—I have used two of Mr. Hungerford’s Concentrators in tho Rattlesnako Quartz Mill, at this place, and find that they work full as E. M. Satu, Supt. These Pans can be seen at the Pioneer Mills, entrance on Stephenson street, San Francisco. In future these Paus will be manufaetured exclustvely by GOSS & LAMBARD, of Saeramento, which is a guarantee that they will be built tn the most substantial manner. Price, $300 HUNGERFORD, San Francisco. ta SEND FOR FREE CIRCULAR AND CONFIDENTIAL ADVICE. 0 ESTABLISHED.. 2406 seserensccsceeescnes MAY, 1860, Mining aud Seientife Press DEWEY & CO., SOLICITORS OF 414 Clay Street, corner Sansome, SAN FRANCISCO, Patent Cases of every kind condueted. Attention Given to Re-Isaucs, Extenslons, Interferences, Rejections, Appenis, eteu,, ete, ASSIGNMENTs, POWERS OF ATTORNEY, AND LETTERS OF ADVICE CAREFULLY PREPARED. ENGRAVINGS FINELY EXECUTED. COPIES OF PATENT PAPERS, Issued by the Uuited Siates or Foreigu Couatries, procured in tue sbortust time jossibie, OO A MONTH SALARY WILL BE PAID FOR Agents, Male er femaic, in a new, pleasant, permanent business. Intl particulars FrKe by return mail, ot suinple, retailing at S4 60, for SUcents, A. D. BOWMAN & ., No. 4 Broad sircet, New York. [Cut out and return this aotico, Ov17-7t Postnage.—The posiage on the Mining anp Scuenzivic Pruss toany portion of the United States is twenty ceuts per anuum, or five cents per quarter, payabie in advance at the Post Office doliveriug tie paper. Postage free in the elty and county. Forcign postage (with few exceptions) two eents per copy, prepaid. To Bremen and tho German States (marked vla Bremen and Hamburg liue), three eents per copy, prepaid. Single copies toany addressin the United Slates, two cents . AMERICAN (WALTHAM) WA BC HES, THE{REST ! TILE CILEAPEST! The extensive use of these Watches by Railway Con ductors, Engineers and Expressmen, tho most exacting eiass of wateh wearers, has thoroughly demonstrated the strength, steadiness, durabillty aud aecuracy of the Waitham Watch. To satisfy that class In all these respects ls to decide the question asto tbe real value of these timeKeepers. More than 300,000 aro thus speaking for themselves la the pockots ot the peopie. Iniported watches are made on an expensive system, In amali numbers, but hy numerous makers, and are placed In the market hero hy an Importer, who first secures a MONOPOLY OF SALE OF SOME ONE MANUFACTURE, To the mannfacturer’s profit must bo added the cost of Importation. A custom-house duty of twenty-five per ecnt. payable In gold. A profit of at least twenty-five per cent. to the importer aaother to the jobber, thus doubling tbe cost of tino taported Watch. At Waltham, Watebes are mannfaetured on alarge seale under one roof and system of supervision and managemeat, thereby saving ainny of the expenses necessarily lneurred In surall establishimeuts,—hence their great cheapness, ss All respectahie dealers now seil Waitham Watches, and eompetition, as the world knows, is favorable to smali profits. The trade is satisfied, becauve, thougii the proflt on each watch is small, the demand ls largo and ali ure saicable. Unser Importers lly plaee a worthless Swiss imitation luthe market. To avoid iinposition, the purchaser shoud invariably demand a certificate of genuineacss, signed hy RK. E Robbins. There are dillerent grades of finish in the different varleties of Watches made by the Waltham Company, as there are different sizes and shapes to suit all tasies and means; but every Watch that bears the genuine trade-mark cf “Waltham,” is guaranteed tobe a good one, and nobody ueed he atraid to buy it. Every Watch Fully Warranted. For sale by all first elas3 dealers In the United States and British Provinces. ROBBINS & APPLETON, AGENTS, 182 Mrondway. New York. ra RR. B. GRAY & CO., Agenis tor California, 616 Merchant street, San Frauelsco. By Mait.—The Mining aud Scientific Press will be sent by maii to any part ofthe elvilized world. In cause uf removal subseribers have only to Infor us of tbe post office address of [heiruld aud new location, and the papes will be seut accordingly. BRASS AND BELL FOUNDER Valves of a all other Joints, Speiter, Soider, and Cop: Gaugo Cocks, Cylinder Cocks, ot Giobes, Steam Whistles, For Mining p tings, &e. C paid to Dist tent Improved AND BRAS WwW. DT. GaARMAWT, City & Cor. Mission and Fremont sts., SAN FRANCISCO. Manufacturer of Brass, Zinc, and Antl-Friction or Babbet Metal Castings; CHURCH AND STEAMBOAT BELLS, TAVERN AND HAND BELLS AND GONGS, FIRE ENGINES, FORCE AND LIFT PUMPS, Steam. a RuOr Soda Of], Water and Fiange Cocks, an 4\ descriptions, made and repaired. Hose ang per Rivets, ac, HYDRAULIC PIPES AND NOZZELS urposes, Iron Steam Pipo furnished with Fit. ‘oupling Joints of all sizes. Particuiar attentio: diery Work. Manufacturer of ‘*Garratt’s Pat. ournal Metal.” { Sa~ Highest Market price pald for OLD BELLS, COPPE!] S. Be our Saw Smithing and Repairing Patent Tooth Circular Saws, Whev have proved themxelvea to he the max EACH SAW JS WARRANTED IN EVERY RESPECT. Portable & Stationary Saw Mills, N. W. SPAULDING, ESTABLISHMENT. Nos, 17 and 19 Fremont St., near Market, MANUFACTURER OF SPAULDING’S durable and economies) Sawa In the World, Partieuiar attention paid to construction of MILLS FURNISHED AT SHORT NOTICE, At the lowest Market Priecs. endowed with tho National Land Grant in 1866, furnisires adyaneed instructlon in the various bratehes of Mathematical, Physical, and Natural Science, College, a Board of thirteen Professors ia different special ties, and six asslstant instructors. \ elor of Philosophy, conferred by Yale Coliege, are ar: ranged as follows: 1—Curmistry anD MINERALOGY. 2—CrviL ENGIsExnISG ENGINEERING AND METALLUKGY. 5~AGRICULTURR. 6—Nat URAL HISTORY AND GEOLOGY, andif already Colicge graduates, aro receiyed as candi 1 dates for the degree of Doctor of Philosopby. Sheffield Scientific School Or Yale College, New MWuven, Conn, This department of Yale College, Instltuted m 1810, aad . The Seiiool Is under the direction of the President of the . Reguiar courses of study,leading to tbe degree of Bach. 3—Mxerantca, ENGINEERING. 4—MINing” . and 7—Sezect Course. Advanced students are also admitted to optional courses, F Tultlon, $125 per year of forty weeks. Tbe Librarles, Muscums, Liboratories and Apparatus, acecessibic to studeats, are vailous aud expensive. For coples of the Annual Circular and Report, letlers ‘ may be addressed to the “Secretary of the Sheftield Sclea. tifie Schooi,” New Heaven, Conn. 13v6-1ylép DUDGEON’S I PATENT HYDRAULIC LIFTING-JAOKS BOILER “PUNCHES, Ligith street, cor. Muna, SAN FRANCISCO, 1 UyJ6-6m116p CAS FIXTURES. New Goods! Rew Store? NEW FIRM! PLUMBING GOODS, QERIEN, BUSH & CO, 539 California street, Sau eee Frauciseo, 4 u u 22y16-3miép MAGAZINES, Per Au a -—. Ww. E, LOOMIS, ae News Dealer New Blackwood Nonrs at Home Good Words AND STATIONER, southeast corner Sansome and Peterson's. 3 ub Washington streets, Arlhar . Lady's Friend SUPPLIES ALL Harper's Weckly. 60 : clnnney Corner od EASTERN P ilerary. MIN eee 7 eres 6H PERIODICALS the Year Ronud ay ; X 1 Sumber. ‘OUdOILIIL Rows § 150 4y the Year, Mouth or Num

112 The Mining and Scientific Press. Wuart can. be sean at Woodwards? Almost everything in nature. It is a little world in itself, with fountains, brooks and lakes, with green and grassy lawns, with every variety of bird and beast, plants and fruit, statnes and pictures, eggs, shells and minerals. What cannot be found at Woodwards Gardens?Removan.—Our friends will please bear in mind that the Mixine anp ScImNTIFIO Press Office, Patent Agency ‘and Job Printing Office has been removed from 505 to 414 Clay street, about half a block below Sansome. Valuable Books on Mining, Mineralogy, Geology, Metallurgy, Etc. ANSTED’S Gold Seekers Mannal. 1 vol. 12mo. eloth....+ RGR OBRRC . BAGO enone deenenseenenere $l? ANTISELL.—The Manufacture of Photoeuie or Hydro-Carbon Olls, from Coal and other Eituminous Substances, capable of supplying Burntng Finids. By Thomas Antisell, M.D. I vol. 8vo. BARSTOW—Sulphurets ; What they are, How Concentrated, How Assayed, and How Worked; With a Chapter on the Blow-pipe Assay ot Minerais: lyvol 12ino. elotb .. . BLAKE, W. P.—Geologieal Reconnoissanee ln California in 1863-4. 4to., with plates, maps, seetions, cte... ueceeneaaeeee tase 1 « 1000 BLAKE, W. P.—Silver Ores and Silver Mines, ete. 8vo 200 BLAKE, W. P.—Mining Magazine and Journal of Geology, t@. BYO....0002) oe Bihascon osenge 500 BLAKE, W. P.—Annotated Catalogue of California Minerals. 8yo o BUCKLAND (Rev. Wm.)— Geology and Mineralogy. 2 ois. 8v0. Cloth.. ccceeeceeeereeeeeeee +19 00 BOURNE (John)—Handbook of the Steam Engine, {liustrated. 2 vol. 12mo, cloth,.. ... . 300 VONGDON.—Mining Laws and Fortas 0! California and Nevada, and tho Mining Ordinances ot Mexico. 184 pp. 8yo} fiexibie cioth ; t86t. (The only Comrpllation ONtaNt ..ecsccecereseesseeseceneeees 2 BD DUFRENOY, — Mineralogie. 5 volumes, BV Ose ce ennnesenneeees tenn neeeeeeee eeeeaee . »» 20 00 DANA’S Manual of Mineralogy. Revised edition. 260 iilustratlons. lzmo. cloth. New Haven, 1863. School Edition. DANA’S Mannal of Geology. Numerous Illustrations, 8vo. haifmoroceo, Pbiladelphia, 1863. 6 75 DANA’S Text-Book of Geology. Illustrated. 12ino, cloth. Phiiadelphia, 1864..... ELDERHORST’S Blowptpe.—Analysis and Deterininatlye Mineralogy. hird editlon, revised. Bro. cloth. Philadelphia, 1866.......05 Beecmnee 1 FAIRBAIRN. —Iron: its History, proper tles, and Proecessesof Manufacture By Win. Fairbalru, GC. E., LiL. D, lvol. 8vo. New Editioa.... 5 GOODYEAR’S Translation. A Treatise on tho Assaying of Copper, Silver, Lead, Goid and Mercury, lrom the German of Th. Bodeman and Bruno Kerl. I vol. 12mo. Cloth.-...0.00s eee et eee eee 2 50 HUMBLE.—Dictionary of Geology and Mineraiogy. Third Edition, Koviyed 1 vol. 8vo. cloth. 9 00 HOSKOLD'S Practical Treatise on Mining Land aud Railway Surveying. Eugineering, Ete. Lol. 8V0, CLOtN. ecee eee e eee e en eeee eee eee bosons Bence . KUSTEL.—Novada and California Processes of Silver and Gold Extraction, for pauerl use, and especially for the Miniug Public of Callfornia and Nevada; also, a description of the General Metal+ 6 00 lurgy of Siiver Ores, y Guido Kustel, Muilng Engineer. illustrated by accurate eugraviag. 1 vol. &vo. cloth.. . KUSTEL.—A Treatise on Coneentration of 9 ali Kinds of Ores: Ineluding tbe Chlorinatlon Proeess for Gold Bearlng Sulphurets, Arseniurets, and Gold and siiver Ores Generally. ny Guldo Kustel, Mining Engineer and Metailurgist. lilustrated with 120 diagrnms 0a 7 pilates. Ll vol. 8vo. eloth...... 7 5 LAMBORN.—Rudimental Troatise on the Metallurgy of Copper. 1 vol. l2mo. ilmp cloth. WUSt rated cores ee cece ene . LAMBORN.—Rudimentary Treatise on the Metallurgy of Sliver aad Lead. 1 vol. 1: ciouh. Illustrated...... 100 MITCHELL’S Manual of Praetical Assay++ 10 50 Ing. 1 vol. 8vo. eioth.... Fees oe Sere O A MAKINS.—A Manual of Metallurgy, more articuiarly of the Precious Metals, including the Tethods of Assnying them. By G. EH. Makins. ivol. Ral) cioth. lilustrated by upwards of 50 engravTES. eeeseneeeeeee _ oc gape do agana nepeo.codpagabe Oherosoc OVERMAN (Fred.)—A Treatiso on Metallurgy ; Comprisiag Miaing, and General and Partleular Mctaliurgicai Operatious. 1 vol. 8vo. cloth. PIGGOT.—The Chemistry and AMaeileegey ® of Copper. By A. Snowden Piggot, M. D. 1 vol. 12ine. cloth. PHILLIPS AND DARLINGTON.—Reeords ot Mining and Metaliurgy; or, Facts and Memoranda for the Use of Mine Agents and Smelters By A. Phillips aud John Dariingtou. 1 voi. 12mo. eloth PERCY (John).— Metallurgy; the Act of Extracting Metals from thelr Ures, and adapting them to various Purposes ot Mauufucture. Iron and Steel. lvol. 8vo. cloth. . .s.cceerensee te eennes . PLATTNER AND MUSPRATT on the Use of the Blowpipe. 47 Diagrams. Third edltion, revised. Svo, ctoth. London, 1834......e:ecere Practical Use of the Blowpipe ; being a Grad\ated Course of Analysis. lémo. eioth. New York, VYSG oes eset ence ene e eee ee eeneee 200 SUOFFERN’S Useful Metals and their Alloys. lL vol. cloti..... = mare celencneweme™ SMITH’S Blowpipe— Vade-Mecum. The iowpipe. Churacters of Minerais Alphabetically Arranged. 8vo. cloth. London, 1802.......66 : URE’S Dictionary of Arts, Manufactures and Mines. 2,300 Eugravings. From last London edition. 3 vols, 8vo. cloth. New York....... oS WHEELER & RANDALL’S Quartz Operator'’s ILuulbook. Fiexible cloth, l2mo. Sau FranGIRO LGD .ecesaseesnesenen cones WHITNEY.—A Geological Survoy of Californla. Keport of Kleid Work from 1860 to 1864. By J.D. Whitney. Per. vol quarlo.ssereeee eee scersee 600 Auy of the abovo Books will be furnished by return mail or express, on receipt of the price with postage added. Any other books desired will also ho furnished ut the lowest San Francisco retail prices, Address, DEWEY & Co., Miuing and Scientilie Press Office, San Franciseo 1ivi3-lana tf ~ & 13 50 6 00 5 50 100 Fig. 1 is a perspective view of that . American and Foreign Patents th Fig. 2. It should be borne in miad that Mr. Hungerford is the original builder and maker of the eelebrated Prater Concentrator, und his name sbould be sufficient guarantee to warrant the public in examining his new maehine hefore purehasing elsowhero. RECOMMENDATIONS: M. Honxcerrorp, Esq.—Dear Sir :-—Having opinion, the best Concentrator now in use. Yours Very respectfully, well as they are represented to do. Address, Goss & Lambard, Sacramento, or M. HUNGERFORD’S IMPROVED CONCENTRATOR, Por Saving Gold, Salphurets, Quicksilver, ete. Fin. 1 There is no deseription of machinery of so mueh importanee to tho mining interests of California, at the present time,as that for the separation of sulphurets. Many machines have been tried, and ahandoned; and none seems to meet the requircment of the mining interest so well as that now patented by Mr. Hungerford, which is au improvemeat on the well known Huagerford & Prator Coneentrator, with whieh his name is already so fumiliar. pan as now eonstrueted. Wor economy of space and maehinery, one shaft is made to drive two pans, which are set and arranged as shown in the eagraving. Fig 2 is a section through the eenter of the pan, showing how it operates in separating the sulphnrets, as well as the great improvement to the pan, which consists of the addition of a eirculur trongh outside @ periphery. A full description of the principle and mode of action of this pan, is described in circulars, witich will ba forwarded to any party who may desire them. NeEwcastTLe, Cal., June 21, 1868. used oight of your improved Concentrators (built by Goss & Lambard, of Sacramento), it affords me pleasure to bear testimony to their efficiency und adaptation to the purposes for which they are designed. I have uscd various styles of Concentrutors during the last five years, but have found nothing that begins to compare with your machine, for durability and thorough concentration; and I ean _eonfidently reeomineud them to mitllinen, heing, in my truly, J. C. Corgy. Newcast.g, Placer Couaty, Cal., Tune 23, 1868. Mr. Morcar Hunczerrorn, Esq.—Dear Sir:—After witnessing tho operatton of eight of your Coneentrators for a month, in the Golden Rulo mill, Placer Connty, and running the same nunher in the Mt. Pleasant mill, El Dorado County, I am satisfied they are superior, as Concentrators, and more durablo and less liuble to get out of order, than any Concentraters I havo seen; and I rovommond them to millmen, feeling assured they will, after tho most thorough trial, he pleased with them. L, E. Arcursox, Metellurgist. Bie Oax Frat, May 23, 1868.—r. Thos. Mulford—Dear Sir:—I have used two of Mr. Hungerford’s Concentrators in tho Rattlesnako Quartz Mill, at this place, and find that they work full as E. M. Satu, Supt. These Pans can be seen at the Pioneer Mills, entrance on Stephenson street, San Francisco. In future these Paus will be manufaetured exclustvely by GOSS & LAMBARD, of Saeramento, which is a guarantee that they will be built tn the most substantial manner. Price, $300 HUNGERFORD, San Francisco. ta SEND FOR FREE CIRCULAR AND CONFIDENTIAL ADVICE. 0 ESTABLISHED... 2406 seserensccsceeescnes MAY, 1860, Mining aud Seientife Press DEWEY & CO., SOLICITORS OF 414 Clay Street, corner Sansome, SAN FRANCISCO, Patent Cases of every kind condueted. Attention Given to Re-Isaucs, Extenslons, Interferences, Rejections, Appenis, eteu,, ete, ASSIGNMENTs, POWERS OF ATTORNEY, AND LETTERS

OF ADVICE CAREFULLY PREPARED. ENGRAVINGS FINELY EXECUTED. COPIES OF PATENT PAPERS, Issued by the Uuited Siates or Foreigu Couatries, procured in tue sbortust time jossibie, OO A MONTH SALARY WILL BE PAID FOR Agents, Male er femaic, in a new, pleasant, permanent business. Intl particulars FrKe by return mail, ot suinple, retailing at S4 60, for SUcents, A. D. BOWMAN & ., No. 4 Broad sircet, New York. [Cut out and return this aotico, Ov17-7t Postnage.—The posiage on the Mining anp Scuenzivic Pruss toany portion of the United States is twenty ceuts per anuum, or five cents per quarter, payabie in advance at the Post Office doliveriug tie paper. Postage free in the elty and county. Forcign postage (with few exceptions) two eents per copy, prepaid. To Bremen and tho German States (marked vla Bremen and Hamburg liue), three eents per copy, prepaid. Single copies toany addressin the United Slates, two cents . AMERICAN (WALTHAM) WA BC HES, THE{REST ! TILE CILEAPEST! The extensive use of these Watches by Railway Con ductors, Engineers and Expressmen, tho most exacting eiass of wateh wearers, has thoroughly demonstrated the strength, steadiness, durabillty aud aecuracy of the Waitham Watch. To satisfy that class In all these respects ls to decide the question asto tbe real value of these timeKeepers. More than 300,000 aro thus speaking for themselves la the pockots ot the peopie. Iniported watches are made on an expensive system, In amali numbers, but hy numerous makers, and are placed In the market hero hy an Importer, who first secures a MONOPOLY OF SALE OF SOME ONE MANUFACTURE, To the mannfacturer’s profit must bo added the cost of Importation. A custom-house duty of twenty-five per ecnt. payable In gold. A profit of at least twenty-five per cent. to the importer aaother to the jobber, thus doubling tbe cost of tino taported Watch. At Waltham, Watebes are mannfaetured on alarge seale under one roof and system of supervision and managemeat, thereby saving ainny of the expenses necessarily lneurred In surall establishimeuts,—hence their great cheapness, ss All respectahie dealers now seil Waitham Watches, and eompetition, as the world knows, is favorable to smali profits. The trade is satisfied, becauve, thougii the proflt on each watch is small, the demand ls largo and ali ure saicable. Unser Importers lly plaee a worthless Swiss imitation luthe market. To avoid iinposition, the purchaser shoud invariably demand a certificate of genuineacss, signed hy RK. E Robbins. There are dillerent grades of finish in the different varleties of Watches made by the Waltham Company, as there are different sizes and shapes to suit all tasies and means; but every Watch that bears the genuine trade-mark cf “Waltham,” is guaranteed tobe a good one, and nobody ueed he atraid to buy it. Every Watch Fully Warranted. For sale by all first elas3 dealers In the United States and British Provinces. ROBBINS & APPLETON, AGENTS, 182 Mrondway. New York. ra RR. B. GRAY & CO., Agenis tor California, 616 Merchant street, San Frauelsco. By Mait.—The Mining aud Scientific Press will be sent by maii to any part ofthe elvilized world. In cause uf removal subseribers have only to Infor us of tbe post office address of [heiruld aud new location, and the papes will be seut accordingly. BRASS AND BELL FOUNDER Valves of a all other Joints, Speiter, Soider, and Cop: Gaugo Cocks, Cylinder Cocks, ot Giobes, Steam Whistles, For Mining p tings, &e. C paid to Dist tent Improved AND BRAS WwW. DT. GaARMAWT, City & Cor. Mission and Fremont sts., SAN FRANCISCO. Manufacturer of Brass, Zinc, and Antl-Friction or Babbet Metal Castings; CHURCH AND STEAMBOAT BELLS, TAVERN AND HAND BELLS AND GONGS, FIRE ENGINES, FORCE AND LIFT PUMPS, Steam. a RuOr Soda Of], Water and Fiange Cocks, an 4\ descriptions, made and repaired. Hose ang per Rivets, ac, HYDRAULIC PIPES AND NOZZELS urposes, Iron Steam Pipo furnished with Fit. ‘oupling Joints of all sizes. Particuiar attentio: diery Work. Manufacturer of ‘*Garratt’s Pat. ournal Metal.” { Sa~ Highest Market price pald for OLD BELLS, COPPE!] S. Be our Saw Smithing and Repairing Patent Tooth Circular Saws, Whev have proved themxelvea to he the max EACH SAW JS WARRANTED IN EVERY RESPECT. Portable & Stationary Saw Mills, N. W. SPAULDING, ESTABLISHMENT. Nos, 17 and 19 Fremont St., near Market, MANUFACTURER OF SPAULDING’S durable and economies) Sawa In the World, Partieuiar attention paid to construction of MILLS FURNISHED AT SHORT NOTICE, At the lowest Market Priecs. endowed with tho National Land Grant in 1866, furnisires adyaneed instructlon in the various bratehes of Mathematical, Physical, and Natural Science, College, a Board of thirteen Professors ia different special ties, and six asslstant instructors. \ elor of Philosophy, conferred by Yale Coliege, are ar: ranged as follows: 1—Curmistry anD MINERALOGY. 2—CrviL ENGIsExnISG ENGINEERING AND METALLUKGY. 5~AGRICULTURR. 6—Nat URAL HISTORY AND GEOLOGY, andif already Colicge graduates, aro receiyed as candi 1 dates for the degree of Doctor of Philosopby. Sheffield Scientific School Or Yale College, New MWuven, Conn, This department of Yale College, Instltuted m 1810, aad . The Seiiool Is under the direction of the President of the . Reguiar courses of study,leading to tbe degree of Bach. 3—Mxerantca, ENGINEERING. 4—MINing” . and 7—Sezect Course. Advanced students are also admitted to optional courses, F Tultlon, $125 per year of forty weeks. Tbe Librarles, Muscums, Liboratories and Apparatus, acecessibic to studeats, are vailous aud expensive. For coples of the Annual Circular and Report, letlers ‘ may be addressed to the “Secretary of the Sheftield Sclea. tifie Schooi,” New Heaven, Conn. 13v6-1ylép DUDGEON’S I PATENT HYDRAULIC LIFTING-JAOKS BOILER “PUNCHES, Ligith street, cor. Muna, SAN FRANCISCO, 1 UyJ6-6m116p CAS FIXTURES. New Goods! Rew Store? NEW FIRM! PLUMBING GOODS, QERIEN, BUSH & CO, 539 California street, Sau eee Frauciseo, 4 u u 22y16-3miép MAGAZINES, Per Au a -—. Ww. E, LOOMIS, ae News Dealer New Blackwood Nonrs at Home Good Words AND STATIONER, southeast corner Sansome and Peterson's. 3 ub Washington streets, Arlhar .. Lady's Friend SUPPLIES ALL Harper's Weckly. 60 : clnnney Corner od EASTERN P ilerary. MIN eee 7 eres 6H PERIODICALS the Year Ronud ay ; X 1 Sumber. ‘OUdOILIIL Rows § 150 4y the Year, Mouth or Num