Volume 29 (1874) (428 pages)

234 MINING AND SCIENTIFIC PRESS. [October 10, 1874. Boat Building. The handsome ladies’ bsrge exhibited at ths late Mecbanics’ Fair by the Cslifornia Theater Boat Club, has attracted considerable sttention from eveu those with no inclination for aquatic pleasures. They see thst she is beantifnlly fitted up with tasty awnings, cushions, oarpets, etc., and thatshe is totally different from their preconceived ideas of boats. Msny people think thata boat is a concern which flosts snd imperfectly keeps ont the water, where the psssengers set on dsmp seats with their feetin puddles, in a perpetual state of anxiety a8 to whether they will ever gst ashore again. The appearsnce of the boat in qnestion unsettles this theory, as she reslly looks neat and comfortable, as well as perfectly safe. There is one thing in conuection with her, bowever, tbat has not been explainsd. It is supposed by many that she was built by the California Theater Boat Club, which she was not. She does not even beloug to the club, but to an individusl member. The club owns and uses boats, but does not build them; althongh in ong instance some of the members did build a boat, but that was a four-oared shell, entirely different in size and shape and appssrance from the one latsly on exhibition, In a Fair hsld under the anspices of a Mechanic’s Institute, the artizans and manufacturers ought to have full credit for what they have done;mnch more credit, in fact, than those who simply exhibit srticles made by otber persons. This is not always given, however. We do not thiuk it wonld be a bad idea at exhibitions of this sort to give the usmes of the workmen who construct a bsautiful piece of machinery or anything else, as well as tbe names of the persons for whom it was made. This is not a commou custom, but it ought to be, a8 it wonld encourage individual artisans and make their names known outside of ‘‘shop” ciroles. f Well, perhaps the reader is anxious by this time to know who did build that boat, aud thinks it sbout time we told him if we know. In answer to this mental query, we say, Mr. Wm. Stone, a first-rate boat builder, but so modest withal thst he didn’t put his nsme on the boat as its builder. Bill Stone, as he is called in yachting and boating circles, is one of the leading boat builders of the town. He bas a fine boat yard, houss, etc., in front of bis residence on the Potrero, where he has facilities for hauling out of water any of the yachts, or large craft which ueed repair. He built the yaoht “Peerless” for Capt. Ogden, and _afterward reconstructed her, turuing her into a eteamer, aud after that turned ber into a schooner agaiu. He has built several other good sized vessels aud small: boats innnmerable. He is specially patronized by the members of the S. F. Yaoht Club, with whom his posts receive a well deserved reputation. There area prest number of his boats in the boat houses and steps in tbe sonthern part of the city, where he is well known among the boatmen and gentlemen who are fond of sport on the water. The boat in the Fair is a good sample of his work, and he is capable of turning out anything, from a duck-punt tga firstclass yacht, both of which he has done. THis boats are remarkable for their strength and fine and elegant finish, a8 well as for the bsauty of model, A Success.—It is a matter cf congratulation, not ouly to Harry Strout, the manager of the Hoosgac works, but to all interested in the welfare of our mining district, tbat the experiment made by him in erecting a matting furnace at his smelting works is a success—one beyond his moat sauguinary expectations. Yesterday morning, at 9 o’clock, ore was thrown in, and for two hours, anxiously expectant of the result, the manager watched the workings of the furnace, until at length be had the satisfactiou of seeing a perfect separation from tbe rich quartz ores which contained too much lead to be properly reduced by the smelting furuace. By the matting furnace all classes of ore cau be advantageously worked; thatfrom Silverado, Secret cationand Newark, can all be reduced to a flux which hitherto was almost impossible to procure, and a perfect separation of all siliciferoue eubstancee. By the mattiug process 20 tons of ore can be treated each 24 hours, so elated is Mr. Strout over the success attendiug his first effort that he will have another, similar in design, erected immediately.—Hureka Sentinel, Trcunican ScHoors.—Where onr future skilled workmen are to come fromisa question which is crowding forasolution. The decline, or rather the total abrogation of the apprentice systsm has deprived the youth of the opportunity of learning trades. The result is that there are few who are learning, so that skilled labor is getting scarcer in every department of industry. It is therefore a matter of urgent importance that some method ebould be devised to remedy this difficulty. Of all the plans discussed there seems to be but one which promises success; that is, the establishment of technical schools. The large degree of success which has followed the introduction of these schools in some departments of our activities is etrong proof of their utility in all branches. We might refer to our various schools of design and art, to our medical schools, and jschools of mining and engineering. The Big Tailings Flume. Tbe Big Tailings flume on Carson river, uear the Woodworth mill, is now in successful operation. It ig 1,700 feet in length and 19 feet in width. It contains over 150,000 feet of lumber, and it is claimed that it is the largest flume of tbe kind in the world., It doubtless is all tbat is claimed, as there are but few places in the world where snch flumes are in use. It is divided into 12 compsrtments, each 19 inches in width. The bottom of each of these compartmeuts is covered with blsnkets of a particular kind, manufsctured expressly for this use. It is among the threads and in the wool staple of these strips of blanketing that the silver sulphurets are caught. In tbe majority of the flumes of this kind now in nse in the country, it isa good deal of tronble to secnre the sulphnrets after they are canght in the blankets, ‘The old plan of doing this was to turn the water out of the compsrtments, tske up the strips of blanketing, and josding them upon a wheelbarrow or car, take them to a tank aud wash them ont, wben the precions sulpburets would fsll to the bottom and so be saved. With the new flume this business is msnaged much more expeditiously. A deep and narrow sluice runs by the side of the flume, and into this the flame is washed by sections of 150 feet. The blankets are washed where they lie in the oompartments, and the sulphurets obtained are then run ont into the side sluice, which carries them to where they are to be duntped. In this way the work of wasbing the blankets is cheaply and spéedily accomplished. All the tailings flowing down Gold caiion pass over this flame. A dam across tbe cafion turns the tailings into alarge string of sluices, which carries them scross the conntry to the flume, situsted about two miles above Daytou. Tbe blsnkets catch a considerable per cent. of the valuable materis] contained in the tailings, but no matter how many sluices they psss through, they still contsin much gold and silver. In this way millions on milhons of dollars have found their way into the Carson river aud thence into the sink or lake into which it empties. Not only are gold and silver thus lost in the river, but also tons on tousof quicksilver. All the quicksilver brought to the country is eventually lost, eithsr in the water or in tbe sir, for none is ever carried ont of the State.— Virginia Enterprise. New Ponr.—The Desert News has been exsmining a new double-action plunger pump, inventedand completed by W. J. Silver, Salt Lake City. The News says: The oastings for this steampump were prodnced, some of them (the hesviest) at the rsilroad shops, some at Davis & Sons’, and some at the Salt Lake Iron Works, that used tobe. All the turning, boring and fitting were done at Mr. Silver’s machine shops, and that gentleman fitted up a steam boring machine expressly for this work, which operates with astonishing rapidity. The steam oylinder of the pump has a 16-inch bore, the plunger is 10 inches in diameter, aud has a 24juch stroke. Ata moderate rate of speed the pump will throw out 450 gsllons of water a minute, but the capacity cau be incressed, when required, to from 600 to 700 gallons a minute. The ereat advantage,of this pump over others, and which constitutes the improvement on which the letters patent were granted, is that it can operate with ag great facility in one position ag another, at any angle, which is an incalculable advantage for pnmping mines, saving a largeamount of expense in excavating to attain positions necessary with pumps which do not bave this improvement. The cost of this piece of machinery is, we are informed, about one-fifth what it would have taken to put a Cornish macbine of similar oapacity at the Emma, for the use of which mine it is designed, and to the locality of which it will be taken on Friday. Worxtna Coan mo Depru.—The Ironmonger says: It bas been stated that it is not likely coal can be worked below 4,000 feet in depth; but in the neighborhood of Charleroi, iu Belgium, coal is worked without any difficulty at nearly 4,000 feet. In reference to the hindrance expected to arise from increase of beat, Mr. Hunt states tbat bis measurements of temperature have tended to sbow that the rate of increase diminishes; down to 100 fatboms from the surface he has found the increase one degree in 50 feet, but in the next 100 fathoms only one degree in 70 feet, and in the third 100 oue degree in 85 feet. Even supposing the heat to be ae great as some people imagine, he believes that tbat very heat will be found to be an engiueering agent which will help in the process of ventilation, so as to produce a temperatnre sufficiently low to euable nien to work tbere with no great difficulty. Kenruoz Hoisting Works.—The old Kentuck hoisting works building was torn down some two months ago. Tbe sngiues and boilers constitute about tbe only machinery left onthe premises. The Crown Poiut RayiueCompany, who have secnred the use of the Kentuck sbaft for the purpose of prospecting their own mine, will have to make some extensive repairs npou the works before the miachinery can be used for hoisting. Winter Supriies.— The Consolidated Virginia mining company are at present laying in an immense supply of lumber and mining timbers for the coming winter at their yard, near the depot. The timbers are from 12 to 16 inches sqnare, and are all hewed. They were floated dowu the Careon river this summer from the Sierra Nevada mountaius to Empire City, aud from there were brought to this city by the Virginia and Truckee railroad, wat Tue Procress oF THE New Mitu.—The new mill of the Consolidated Virginia Company is beginning toloom up grsndly. Tbe wing in which will be situated the batteries and tbe machinery therewith connected is fast drawing to completion. It is inclosed aud roofed. The wing running eastward, which will contain the pans, settlers and other apparatus counected with the amalgamating department, is. also up and is now being roofed. The vsst dimensions of these buildiugs sre not st once apparent to the casual observer, as they are nof of great hight, but when ons descends to the level on which the structures stand they spread away to a great distauce in all directions. Tbe new mill will be connected with tbe company’s hoisting works by arailway; the works and the mill being but a sbort distance apsrt. The ores from ths mine will be rnn directly to the mill in cars, and will be dumped in the bstteryroom just where they are wanted. Around the mill are half a dozen large sheds, under which are eugaged workmen of all kiuds. In one of these temporary sheds is a steam engine, driving planes and all kinds of labor-saving machiuery. The mschinery running in this shed would constitute a first-class planing mill and shop in some towns.— Virginia Enterprise, Sept. 30. The Mining and Scientific Press--Ever Onward, Our careful systom of compiling, judiciously condensing, and conveniently arranging into regular departments, has heen heartlly endorsed. It renders the paper worth more to readers, who can find handily that which interests them most. The weekly issues of the Press will contain reiiable Information for Practical Miners, Treating on the Opening of Mines; Mining of Ores; Milling of Ores; Smelting of Ores; Separation and Roasting of Ores; Amalgamation ; Saving of Gold and all precious Metals; New Prooesses of Metallurgy; New aiscovariga of Mines; Mining Engineering and Hyaulics. For Inventors, Mechanics and Manufacturers. 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234 MINING AND SCIENTIFIC PRESS. [October 10, 1874. Boat Building. The handsome ladies’ bsrge exhibited at ths late Mecbanics’ Fair by the Cslifornia Theater Boat Club, has attracted considerable sttention from eveu those with no inclination for aquatic pleasures. They see thst she is beantifnlly fitted up with tasty awnings, cushions, oarpets, etc., and thatshe is totally different from their preconceived ideas of boats. Msny people think thata boat is a concern which flosts snd imperfectly keeps ont the water, where the psssengers set on dsmp seats with their feetin puddles, in a perpetual state of anxiety a8 to whether they will ever gst ashore again. The appearsnce of the boat in qnestion unsettles this theory, as she reslly looks neat and comfortable, as well as perfectly safe. There is one thing in conuection with her, bowever, tbat has not been explainsd. It is supposed by many that she was built by the California Theater Boat Club, which she was not. She does not even beloug to the club, but to an individusl member. The club owns and uses boats, but does not build them; althongh in ong instance some of the members did build a boat, but that was a four-oared shell, entirely different in size and shape and appssrance from the one latsly on exhibition, In a Fair hsld under the anspices of a Mechanic’s Institute, the artizans and manufacturers ought to have full credit for what they have done;mnch more credit, in fact, than those who simply exhibit srticles made by otber persons. This is not always given, however. We do not thiuk it wonld be a bad idea at exhibitions of this sort to give the usmes of the workmen who construct a bsautiful piece of machinery or anything else, as well as tbe names of the persons for whom it was made. This is not a commou custom, but it ought to be, a8 it wonld encourage individual artisans and make their names known outside of ‘‘shop” ciroles. f Well, perhaps the reader is anxious by this time to know who did build that boat, aud thinks it sbout time we told him if we know. In answer to this mental query, we say, Mr. Wm. Stone, a first-rate boat builder, but so modest withal thst he didn’t put his nsme on the boat as its builder. Bill Stone, as he is called in yachting and boating circles, is one of the leading boat builders of the town. He bas a fine boat yard, houss, etc., in front of bis residence on the Potrero, where he has facilities for hauling out of water any of the yachts, or large craft which ueed repair. He built the yaoht “Peerless” for Capt. Ogden, and _afterward reconstructed her, turuing her into a eteamer, aud after that turned ber into a schooner agaiu. He has built several other good sized vessels aud small: boats innnmerable. He is specially patronized by the members of the S. F. Yaoht Club, with whom his posts receive a well deserved reputation. There area prest number of his boats in the boat houses and steps in tbe sonthern part of the city, where he is well known among the boatmen and gentlemen who are fond of sport on the water. The boat in the Fair is a good sample of his work, and he is capable of turning out anything, from a duck-punt tga firstclass yacht, both of which he has done. THis boats are remarkable for their strength and fine and elegant finish, a8 well as for the bsauty of model, A Success.—It is a matter cf congratulation, not ouly to Harry Strout, the manager of the Hoosgac works, but to all interested in the welfare of our mining district, tbat the experiment made by him in erecting a matting furnace at his smelting works is a success—one beyond his moat sauguinary expectations. Yesterday morning, at 9 o’clock, ore was thrown in, and for two hours, anxiously expectant of the result, the manager watched the workings of the furnace, until at length be had the satisfactiou of seeing a perfect separation from tbe rich quartz ores which contained too much lead to be properly reduced by the smelting furuace. By the matting furnace all classes of ore cau be advantageously worked; thatfrom Silverado, Secret cationand Newark, can all be reduced to a flux which hitherto was almost impossible to procure, and a perfect separation of all siliciferoue eubstancee. By the mattiug process 20 tons of ore can be treated each 24 hours, so elated is Mr. Strout over the success attendiug his first effort that he will have another, similar in design, erected immediately.—Hureka Sentinel, Trcunican ScHoors.—Where onr future skilled workmen are to come fromisa question which is crowding forasolution. The decline, or rather the total abrogation of the apprentice systsm has deprived the youth of the opportunity of learning trades. The result is that there are few who are learning, so that skilled labor is getting scarcer in every department of industry. It is therefore a matter of urgent importance that some method ebould be devised to remedy this difficulty. Of all the plans discussed there seems to be but one which promises success; that is, the establishment of technical schools. The large degree of success which has followed the introduction of these schools in some departments of our activities is etrong proof of their utility in all branches. We might refer to our various schools of design and art, to our medical schools, and jschools of mining and engineering. The Big Tailings Flume. Tbe Big Tailings flume on Carson river, uear the Woodworth mill, is now in successful operation. It ig 1,700 feet in length and 19 feet in width. It contains over 150,000 feet of lumber, and it is claimed that it is the largest flume of tbe kind in the world., It doubtless is all tbat is claimed, as there are but few places in the world where snch flumes are in use. It is divided into 12 compsrtments, each 19 inches in width. The bottom of each of these compartmeuts is covered with blsnkets of a particular kind, manufsctured expressly for this use. It is among the threads and in the wool staple of these strips of blanketing that the silver sulphurets are caught. In tbe majority of the flumes of this kind now in nse in the country, it isa good deal of tronble to secnre the sulphnrets after they are canght in the blankets, ‘The old plan of doing this was to turn the water out of the compsrtments, tske up the strips of blanketing, and josding them upon a wheelbarrow or car, take them to a tank aud wash them ont, wben the precions sulpburets would fsll to the bottom and so be saved. With the new flume this business is msnaged much more expeditiously. A deep and narrow sluice runs by the side of the flume, and into this the flame is washed by sections of 150 feet. The blankets are washed where they lie in the oompartments, and the sulphurets obtained are then run ont into the side sluice, which carries them to where they are to be duntped. In this way the work of wasbing the blankets is cheaply and spéedily accomplished. All the tailings flowing down Gold caiion pass over this flame. A dam across tbe cafion turns the tailings into alarge string of sluices, which carries them scross the conntry to the flume, situsted about two miles above Daytou. Tbe blsnkets catch a considerable per cent. of the valuable materis] contained in the tailings, but no matter how many sluices they psss through, they still contsin much gold and silver. In this way millions on milhons of dollars have found their way into the Carson river aud thence into the sink or lake into which it empties. Not only are gold and silver thus lost in the river, but also tons on tousof quicksilver. All the quicksilver brought to the country is eventually lost, eithsr in the water or in tbe sir, for none is ever carried ont of the State.— Virginia Enterprise. New Ponr.—The Desert News has been exsmining a new double-action plunger pump, inventedand completed by W. J. Silver, Salt Lake City. The News says: The oastings for this steampump were prodnced, some of them (the hesviest) at the rsilroad shops, some at Davis & Sons’, and some at the Salt Lake Iron Works, that used tobe. All the turning, boring and fitting were done at Mr. Silver’s machine shops, and that gentleman fitted up a steam boring machine expressly for this work, which operates with astonishing rapidity. The steam oylinder of the pump has a 16-inch bore, the plunger is 10 inches in diameter, aud has a 24juch stroke. Ata moderate rate of speed the pump will throw out 450 gsllons of water a minute, but the capacity cau be incressed, when required, to from 600 to 700 gallons a minute. The ereat advantage,of this pump over others, and which constitutes the improvement on which the letters patent were granted, is that it can operate with ag great facility in one position ag another, at any angle, which is an incalculable advantage for pnmping mines, saving a largeamount of expense in excavating to attain positions necessary with pumps which do not bave this improvement. The cost of this piece of machinery is, we are informed, about one-fifth what it would have taken to put a Cornish macbine of similar oapacity at the Emma, for the use of which mine it is designed, and to the locality of which it will be taken on Friday. Worxtna Coan mo Depru.—The Ironmonger says: It bas been stated that it is not likely coal can be worked below 4,000 feet in depth; but in the neighborhood of Charleroi, iu Belgium, coal is worked without any difficulty at nearly 4,000 feet. In reference to the hindrance expected to arise from increase of beat, Mr. Hunt states tbat bis measurements of temperature have tended to sbow that the rate of increase diminishes; down to 100 fatboms from the surface he has found the increase one degree in 50 feet, but in the next 100 fathoms only one degree in 70 feet, and in the third 100 oue degree in 85 feet. Even supposing the heat to be ae great as some people imagine, he believes that tbat very heat will be found to be an engiueering agent which will help in the process of ventilation, so as to produce a temperatnre sufficiently low to euable nien to work tbere with no great difficulty. Kenruoz Hoisting Works.—The old Kentuck hoisting works building was torn down some two months ago. Tbe sngiues and boilers constitute about tbe only machinery left onthe premises. The Crown Poiut RayiueCompany, who have secnred the use of the Kentuck sbaft for the purpose of prospecting their own mine, will have to make some extensive repairs npou the works before the miachinery can be used for hoisting. Winter Supriies.— The Consolidated Virginia mining company are at present laying in an immense supply of lumber and mining timbers for the coming winter at their yard, near the depot. The timbers are from 12 to 16 inches sqnare, and are all hewed. They were floated dowu the Careon river this summer from the Sierra Nevada mountaius to Empire City, aud from there were brought to this city by the Virginia and Truckee railroad, wat Tue Procress oF THE New Mitu.—The new mill of the Consolidated Virginia Company is beginning toloom up grsndly. Tbe wing in which will be situated the batteries and tbe machinery therewith connected is fast drawing to completion. It is inclosed aud roofed. The wing running eastward, which will contain the pans, settlers and other apparatus counected

with the amalgamating department, is. also up and is now being roofed. The vsst dimensions of these buildiugs sre not st once apparent to the casual observer, as they are nof of great hight, but when ons descends to the level on which the structures stand they spread away to a great distauce in all directions. Tbe new mill will be connected with tbe company’s hoisting works by arailway; the works and the mill being but a sbort distance apsrt. The ores from ths mine will be rnn directly to the mill in cars, and will be dumped in the bstteryroom just where they are wanted. Around the mill are half a dozen large sheds, under which are eugaged workmen of all kiuds. In one of these temporary sheds is a steam engine, driving planes and all kinds of labor-saving machiuery. The mschinery running in this shed would constitute a first-class planing mill and shop in some towns.— Virginia Enterprise, Sept. 30. The Mining and Scientific Press--Ever Onward, Our careful systom of compiling, judiciously condensing, and conveniently arranging into regular departments, has heen heartlly endorsed. It renders the paper worth more to readers, who can find handily that which interests them most. The weekly issues of the Press will contain reiiable Information for Practical Miners, Treating on the Opening of Mines; Mining of Ores; Milling of Ores; Smelting of Ores; Separation and Roasting of Ores; Amalgamation ; Saving of Gold and all precious Metals; New Prooesses of Metallurgy; New aiscovariga of Mines; Mining Engineering and Hyaulics. For Inventors, Mechanics and Manufacturers. All new and important developments in Scientifio and Mechanical Progress; Patents and Inventions of the Pacifié States; Progress of Home Industries ; Hints for Local Manufacturers; Illustrations of New Macnineny Reports of Popular Scientific and Industrial ctures. Our Mining Summary Gives the progress of mining work from week to week in the various counties and districts throughout the princlpal mining regions of the Unlted States, arranged in alphabetical order. Itis the most extenslve record of mining operations publishedin the world. It affords the intelligent miner a rare opportunity to know and profit hy the work and experience of his neighbors. Miners have few sources of practical information in their calling, and should embrace every rellahle means for improvement. Mining Operators and Shareholders, at home and abroad, weekly examine our Summary witb Increased interest and profit. Our ‘‘ Domestic Economy” Embraces new and important facts which should be Enown in every cahin and household, Short and inter. esting—the articles ander this heading are freely read and practiced with profit and improvement to the readers. The Press is not strictly a ‘‘ paper for professlonal actentific men,” but rather a Liberal and Popular Scientific Journal, Well calculated to make practically scientific men from our intelligent masses. This is our stronghold for accomplishing good, Plain, correot and pleasing language, easily comprehended by all, confined mostly to short articles, is our endeavor. For Self-Improvement, Every issue of the Press ahounds with articles of an elevating character, to stimulate tho higher virtues and natures and progressive intellects of hoth men and women. Hundreds of Dollars Are oftentimes saved to thereaders of this paper by a single hint or artlele of information in its columns; Such instanceshave been repeatedly reported to the editors and proprietors during their long connectlon with the Press. Oarpaper presents The New and Novel Developments In the progress of this comparatively new section of the . Union (but recently settled and now rapidly increasing with a population of the most intelligent and venture. some people, attracted from nearly every quarter and clime on the globe), onable us, with due enterprise, to display vigor and freshness in our columns not met with in similar journals elsewhere. The samo circum: . stances also render such a paper more ospecially valu able to its readers in a new, and, to a certain measure, untried field, where the best mothods and processes of industry are not s0 well estahlished or traditionally known asin older communities. Published experiences often save costly experiments and disastrous results. A Great Variety of Industrial Information, In brief and fresh form, snited tothe wants and tastes of the readers of this coast, which is not obtainalls, otherwise so timely, or in so cheap and convenient, form. As an industrial publicatlon, meeting the wants of so many kindred industries, this journal stands preeminent and without a precedent. Subscriptions payable in advance—$4 per annum Single copies, post paid, 10 cents. Address DEWEY & CO. Mintno anp Sorentorro Press and Paorrio Rurat Press Office, 224 Sansome St., 8, F. Paciric Rurat Press, A first-class 16-page Agricultural Homie Journal, fille. with fresh, valuable and interestIng reading. Every farmer and ruralist should take it. It is immensely popular. Subscription, $4 8 year, DEWEY & CO. Publishers, SAN FRANCISCO No. 224 Sansome street, The Miine anp Scr=nrrric Press, San Francisco, Cal., Dewey & Co., is a rich placer, wherein golden information mzy be found, valuable to any searcher after knowledge.— Newark Manufncturer. DEWEY & CO. American & Foreign Patent Agents, OFFIOE, 224 SANSOME STREET, 8. F. PATENTS obtained promptly; Caveats filed expeditiously; Patent reissues taken out; Assignments made and recorded in legal form; Copies of Patents and Assignments procured; Examinations of Patents msde here and at Washington; Examinations made of Assignments recorded in Washington; Examinations ordered and reported by Telegraph; Rejected cases taken up and Patents obtained; Interferences Prosecuted; Opinions rendered regarding the validity of Patents and Assignments; every legitimate branch of Patent Agency Business promptly and thoroughly conducted, Our intimate knowledge of the various inventions of this coast, and long practice in patent business, enable us to abundantly satisfy our patrons; and our success and business are constantly increasing. The shrewdest and most experienced Inventors are found among our most steadfsst friends and patrons, who fully appreciate our advantages in bringing valuable inventions to the notice of the publio through the columns of our widely circulated, first-class journals— thereby facilitating their introduction, sale and popularity. Foreign Patents. In addition to American Patents, we secures with the assistance of co-operative ageuts, claims in all foreign countries which grant Patents, including Great Britain, France, Belgium, Prussia, Austria, Victoria, Peru, Russia, Spain, British India, Saxony, British Columbia, Canada, Norway, Sweden, Mexico, Victoria, Brazil, Bavaria, Holland, Denmark, Italy, Portugal, Cuba, Roman States, Wurtemberg, New Zealand, New South Wales, Queensland, Tasmania, Brazil, New Grenada, Chile, Argentine Republic, AND EVERY COUNTRY IN THE WORLD where Patents are obtainable. No models are required in European countries, but the drawings and specifications should be prepared with thoroughness, by able persous who are familiar with the requirements and changes of foreign patent laws—ageuts who are reliable and permanently established. Our sebedule prices for obtaining foreign pateuts, in all cases, will always be as low, aud in some instancss lower, than those of any other responsible agency. We can and do get foreign patents for inventors in the Pscifio States from two to six months (according to the location of the country, soonER than any other agents. Home Counsel. Our long experience in obtaining patents for Inventors on this Coast has familiarized us with ths character of most of ths inventions already patented; hence we are frequeutly able to save our patrons the cost of a fruitless appheation by pointing them to the esme thing already covered by a patent. We are always free to advise upplicants of any Imowledge we have of previous applications which will interfere with their obtaining a patent. We invite the acquaintance of all parties connected with inventions aud patent right bnsiness, beheving that the mutual conference of legitimate business and professional men is mutual gain. Parties in doubt in regard to their rights as assignees of patents, or purchasera of patented articles, can often receive advice of importance to them from a short call at our office. Remittances of money, made by individual inventors to the Gdvernment, sometimes miscarry, and it has repeatedly happened that applicants have not only lost their money, but their inventions also, from this cause and consequent delay. We hold ourselyea responsible for all fees entrusted to our agency, The principal portion of the patent business of thie coast has been done, and is still being done, through our agency. We are familiar with, and have full records, of all former cases, and can more directly judge of the value and patentability of inventions diecov» ered here than any other agents. Situated so remote from the seat of government, delays are even more dangerous to the inventors of the Pacific Ooast than to applicants in the Eastern States. Valnable patente may be +4 lost by the extra time consumed in transmitting specifications from Eastern agencies back to this coast for the signature of the inventor. . Confidential. We take great pains to preserve secrecy in all confidential matters, and applicants for patents can rest assured that their communicatious and business transactions will be held strictly confidential by ns. Ciroulars free. Engravings. We have superior artists in our own office, and all facilities for producing fine and satisfactory illustrations of inventions and machinery, for newspaper, book, circular and other printed illustrations, and are always ready to assist patrons in bringing their valuable .1iscoveries into practical and profitable use. DEWEY & CO., United States and Foreign Pateut Agents, publishers Mining and Scientific Press and the Pacific Rural Press, 224 Sanseme &t., 5, F.