Volume 11 (1865) (424 pages)

ess The Mining. and Scientific Press. MARKLEVILLE GORRESPONDENOE. Messrs, Epirors:— Our mining interests seem to be looking up a little, and we can begin to see onr prospects In the futnre. The Pioneer quartz mill at this place, which has been lying still for sevcral months, hes again started up, and Is now busily engaged iu ernsh{ng and working rock from the {. X. f., at Silver Mountain. The rock front this clalui not only looks woll, bnt is rich in gold and silver, aud pays exceedingly well. The lust run by tho mill at Silver Moontain, before it broke down, worked abont $80 per tou, and the tailings from the eame run yielded nore than twice that ainount. The 1. X. L. is a good claim, and no mistake. At the point front which this teck was taken it is only about forty feet deep. The Buekeye, No. 1, near the f. X. L., (and by many thought to be the same ledge.) have reached their ledge, and found excellent rock, only nbout fifteen feet below the surface. Ihe ledge was struck only a few days ago, aud up to the last news from there they had not get through the ledge. It is thonght that rock froot this claim will pay at tbe present depth. The Lady Franklin “Company are sinking a shaft 4!y hy 9 feet on their ledye, and are also taking out pay rock. This claim is the farthest up the cefton, and ag yet there is no toad to their claim. ‘The company are expecting to erect machinery oa the clain before going much deeper. The Buckeye, No. 2, have also commenced work upon their claim. This is on the Lady Yranklin Ledge, aud the coinpuuy expect to reach pay rock hefore winter. The Morning Star Company are now preparing to ship their rock to Swnnsea, England. It will cost about $35 per ton to deliver it ia San Francisco, where they Will receive an ad) vance of $75 per ton, and then wait for the teturne from England for the balance. So by this meane, if they ehonld get no more, they are getting about $40 per ton for their ere at the mine, which is net bad to take. Several ether mining companies are pushing ahead with their works, nnd before another year rolls around, we nre going to have better times. I verily believe that tbis region ie destined to eclipse the best miaing regions ol Nevada. The lumbering business has grown to be of /great importanee in this section of the eountry. It is estinated that fourteen millions of feet of tuncber, ineluding timbers and _fire-wood, have been run down the Carson this year. Itis certainly ehameful to cut and earry off to other markete the timber from our owu mines, for the time will come when we shall want every etick of timber within the reaeh of our mines for our own use. A drive of ahout 1,000 eords of fire-wood, besides come 150,000 feet of sawed timbers, destined for Empire City, is now being ruu out of the Middle Fork of the Carson, which passes throngh this city. ‘The citizens ot the town have been out in erowds to-day to eee the drive; and [ can assure you that it ie s sight worth seeing. ’L'o see eeveral hundred eords of wood, of ail eizes and shapes, a!l jammed and crammed, and tumbled in together, as thick as it ean float, and traveling at the rate of about ten miles aa hour, bumping lover the huge bonlders in the river bed, forming jams nnd damntivg up the stream; then breaking loose, aud running like a horde of wild tiffaloes, or like a school of saorting porpoises, while the stream is raging froin the dams just let off, is no ordinary sight. ‘I'he river ia getting very low to mnke the driving good ; but to help the business, large dams are built, with flood-gatee, aad while the duins are colleeting the water, the driverg are eugaged at breaking jams, and getting everything ready for the flood, and when the gates are hoisted, and the water reaclee the drive, the folks like o seu the wood “ git.” Reepeetfully yours, Srrrox, Markleville, August 5, 1865. Snowy Hovsr Froxrs.—It is for the love of show, aad aot for the love of baauty, that so mieh of our town architeeture is bedizened with profuse and tasteless ornameat. Itis put there for the sako of respectability—an advertisement, perhaps; for any reason execpt that it is really loved and appreciated. Itie put outside, not ineide. The owuer of the house takes no delight in eeeing it. He only sets it up as asign to the world of hie own wealth aad iaiportaaee ; very often he putsit all up froat, none at the eides or back; for bie opalence may be only sham opulence, aad he waats . to produce the greatest possible effect with the . smallest expeaditure —Building News. Mechanical. ~ STOWE'S PATENT OHAMBER DRILL. We give, in an advertisement, which may be found in another columm, a representation of Stowe’e Patent Chamber Drill, for blasting purposes, designed for nso in shafts, tunnels, etc. Ly the use of this drill u chamber is rendily excavated, directly in the bottom of the hole, by meuns of which a lifting force is given to the explosion, so as to prodnec from fonr to aix times ag inncli elfect as cnn be obtained fron: a churge deposited in the ordinary straight hole. By an examination of tho annoxed representation. it will be perceived that the force o! the eutters is direct and downwards, similurto a dircet acting drill. The only wear upon this drill is npon the cntters, which ure so constracted and adjusted as to stand almost as much force as a regular drill, aed when worn out, they can be replaced for $2.50 a set. A 13¢ inch hole iny be chainbered ont to 334 inches in diameter, in less time than two inches enn be driven down inn regular drill hole 13g inchee in diameter; while the chamber of a 12g inch hole gives a tnuch greater blasting force thnn a straight bole drilled the entire distance 31g inches in diameter. Hy the use of the chamber, six times tho blusting surfaco is given to a straight hole, in addition to its liRing force. ‘This drill can be worked with a hammer, like an ordinary drill, or by hand, as a churn drill, One sct of cutters will chamber out from 50 to 100 lioles, according to tlhe hardnese of the rock. In einking shafts end tunnels by the use of thie drill, it is estimated that the eoet of the labor aad powder will be reduced to abont onc quarter the expense of the same work done without chambering. The late State Fair in Sacramento awarded to this drill the first premium, for tho following reasons, as elated by the Committee: ‘1st, for the siinplicity of constructioa; 2d, for durability; and 2d, for strength of drill. The importanee of come improvement of this kind, for redncing the expense of sinking ehafte and tuanels, is well worthy the especial attention of the mining public, aad sve would partienlarly call the attention of miners to tho advantages claimed to be derivable in tbe use of this drill. Mr. Stowe is also the iaventor of an expanding drill, espeeially designed for use in sinking artesian and oil wells, nnd fur which he received from the State Fair a special premium. By the use of this drill, a pertectly straight bore ean be made from one qnarter to two inehes longer than tbe inside of the tubing which may be used. It ean be attached to any common drill at an expense of from $25 to $50. The many advantages whieh may be derived from tbe use of sach an instrument, in boring oil wells, must be apparent to all acquainted with sueh work. New Macnutyery ror Piacer Dicerves.— The Folsom Telegraph, in a late number, speaks us follows of a new process for extracting gold from placer diggings : Mr. Iodge, the geatleman who some time sinee diseovered that the drift sand on the Aierican river nod the retl dirt of the bills of this vicinity would pay well for working, has arrived with his patent amalgamator, which will be placed in position at Qnigley’s eteam works, for the purpose of testing its adaptebility to work the gold-bearing dirt in this vieinity. ‘The gentlemaa has no doubt of the eutire eueecss of his iuvention creating a revolution in miaing operations in this ncighborhood; not loag since he tried a ton of red dirt at Sau Franeiseo, with his amalgamator, nad realized from it the sum of sixty dollars. There are millions of tons of the same dirt in this vicinity. ’?he profit and feasibility of the gentleman's invention, however, will sbortly be determined. "Phe inmehinery will Se ia position, and ia ruuning order ia about tea days, as we are informed, when we shall eadeavor to give a deseriptioa of this aew system of miniag. Ia the last namber of the Telegraph we aotice that the macbiaery is now in full operation. We should be pleaeed to receive a description of this aew machinery and learn how it succeeds, Another Oalifornia Invented Breech Loading Oannon. In the Mixtne ann Scientirie Press ef June 3d, we gave qnite a full description of a . breech loading cannon which lind been recent. ly invented hy Mr. Langshore, of Mckelumne ill. and which was pronounced by compotent judges quite on effective and fornidable weapon. We have now to record still another invention in the snine line made by Mr. ‘VT. J. Crannier, of Vullecito. A correspondent of the San Andrens Register has witnessed the operation of this new instrument of war, of which lie spexks as follows : We had the pleasure of witnessing the shooting ubilitics of this most extraordinury gun, . and are convinced that it will discharge, with all the force und accuracy of good rifles, the incredible number of six lhnndred balls per minute. ‘the entire machineryis encased with a shcet-iron box. The clinrges are couveyed to the cylinder by means of ingenious mnelinery placed above the cylinder. ‘The cylinder is six-and-a-half inclies long, and nine inches in diameter, conta‘ning eighty-fourchambers. On the right hand end of the cyliuder there is placed a rim with notches thereon similar to those in the cylinder of Colt’s pistels. Ou tlie same end of the cylinder there are twenty-eight tubes, Each tubo discharges one volley of these charges, simultaucously. ‘he cylinder rests iu a borizontal position, having n shaft passing through the center, which shaft rests on bearings on oach end. Behind the cylinder is placed the machinery for revolving, loading, capping and firing it, all of which works with tbe saine ease and perfection as Colt's revolver, with the additional improvement of loadtng and capping, The bnrrels, three in number, are placed in a horizontal position in front of the cytinder, fitting the eame nccurately and receiving the charges from the chambers in the cylinders in the same inanner us the harrel of Colt’s pistols. The entire machinery and construction is so accurately arranged that nny ove who caa turn n grind-stone can manage the gun. ‘the correspoadent says it is the inventor's jatention to give a publie exhibition of the power possessed by the model, in a ehort time, either at Murphys or Vallecito. How to make Gooa Irox.—The importance of employing a flux thoroughly euited to the iron ore under treatment has becn carefully pointed out by Professor Fleury, of New York, who rentarks that the flux servesa threefold purpose. Firstly, it facilitates the elimination of the iron by forming easily fusible compounds with the silica aad alumina ia the oro ; seeondiy, it protects the iron from being oxidised again while pussing the blast down the hearth ; and, thirdly, it serves to deprive the iron of most of its impurities, such as silicon, phosphorous, sulpbur, arsenie, &e. The quantity and quality of the finx shonld be adupted to the kind of ore used, Burat lime gives a grent saving of fuel and an exeellent quality of iron with some ores, while with others eomimon limestone and shale, free from quartz veins, give equally good results. The advantage of an oceasional ehemical analysis of the orcs and fluxes used cannot be too much reeommended to the ironmaster’s attention. Professor Flenry has seen instanees, and he ie not, probahly, the only observer of them, where ironmasters were cntirely ignorant of the nature of the flux they used. Hfe snw furnaees worked with the most refractory magnesiam limestone that could be found, using at least one-third too inueh, and, of eourse, delivering a most exeellent quality of ved and cold short pig-iron. To his question as to the reason of their inferior quality of iron, they answered by accusing tbe ore; a bad boy, they said, will never make a good man. ‘Vhey little dreamed that by usiaga better flux, and in mueh sinaller quantity. their iroa eould be made of good quality and at much less cost. Goutn-Saviso Macune 1x Cororaao.—The Blaek Hawk Journal thus mentions a aew ap. paratus lor saving gold : We hear of a new-fangled arastra oa Mill Creek. Working on eurluee quartz, it gets $300 per cord where a stamp-mill only gets $80. Half a ton of stuffis put in at uight aad the same in the morning, and runaing by water —that is all the attention it requires. It is built in an octagonal form, and in each angle beyond the eireuit made by tbe mullers is a quicksilver riffle, where the gold is eaught. In every view of the ease, this ongbt to be termed a neat little arrangemeat. No quicksilver is lost or wasted, it does aot cut nor flour, not eomitg in eontaet with the grinding surfaces at all. We should like to see Clear Creek lined with such machiaes, and there is no reason why it should not be. ‘heir eoaetruetion ard useare clieap, and they do the . work baadsomely. Mr. Blackbura, the man who is running the one of whieh we epeak, aad . who is aa experieneed mill-man and eugiueer, . saye that he bas beea equally successful in treating ore as quartz. He has beea ruuning eteadily for almost eix weeks. Preventing Oxidation of Iron and Steel, According to the patent of Mr. J. B. Chambeyron, of Puris, it is proposed to prevent the oxidation of iro uud steel by the foreed ineerporation of volatile metals having little uffinity for oxygen. ‘inning, zincing, and leadiuz ouly give incomplete resulta, and Mr. Chambeyron has discovered thnt it ie only by incorporating into the iron itselt, and to a eertain depth, ao metal or au olloy little nffected by tbe action of oxygen, and considered practically inoxidi<able, thit iron and steel can be protected from oxidation in sen nnd other acidulatcil waters. ‘The means he employs are to intrsduce zine alone in the state of vapour inte the iron or steel when they ure only to be exposed to the contact of oxygen, and to n volatile alloy or coipound composed ot tin, lead, and zitic in suitablo proportione. ‘The proportione nre about one fifth of lead, one-fifth of tin, one-flfth of zinc, but they may vary when the iron is to remain in corrosive waters. A ligh temperiture being mecessnry to veporise the nictals to be incorporated. The operatiou is performed in cemeuting chambers. ‘lo euch of tho east-iron leads of the upper retorts is adspted a tube, the lower extremity of which is inmersedin the retort, and the npper extreinity is terminated by a funnel. which lus underneath a epheroidal reservoir, furnishcd above and underneath with a tap for shutting off communication eitber with the retorts or with the iuterior of the reservoir. The metals to he incorporated are ponred ina state of fusion iuto this funnel, wbenee they fall into the retort, the high temperature of which converts them very quickly into vapour. In case the pressure obteined by the vepour is not strong enough to produce the incorporetion, he causes a part of the gas to flow from tle gasonieter, where it ie held in reserve, into the retorts. When the metallic vapours have been incorporated in the pores of tbe iron and eteel they will be condensed there by a lowering of the temperature, which is preceded by the introduction of a certain quantity of borax. which by its volatillisation in tbe apparatue will fix the incorporated metale. The retorts will then be opened, after having ascertained by means of a pyrometer that the temperature bas fallen below that at waich the volatillisetioa of the most volatile metel takes place. Ouarn Factory.—Tbe Machias Union says that Boston cepitalists contemplate establishing a factory for the manufacture of vessels’ chains, wire and wire rigging, in one of tbe Eastern towns ot Maine ; and efforts are being made to bave a part of the stock taken there and secure the loeatioa of the factory at Maehias. he capital of the proposed company will be $300,000, and the works will occupy several large buildings, besides a considerable area for wtarves, yards, etc. Steam power is to be used, and from 100 to 200 workmen will be employed. It is stated that there is at present no establishment in this country where wire riggingis nianufactured. «We derive our eupply chiefly from England. Tur Growra or Couracs on tHE Barrie Firtp.—A reasoning man, with a love of adventare, at first feels alarmed ; and his impulse ig to rua away; andif he has no motive to stand he probably doearua. But at each aclditional exposure he grows less timid, and after hearing canister and grape about his ears a dozen times, begins to think he ie not destined to be hurt. He, still feels rather uneasy, perhaps; but the danger aequiree a sort of faseination ; and though he does not wish to be hit he likes to have narrow escapes, and so voluntarily places himself in a position where he can ineur more risk. After a little he begins to reason the matter, and refleet on the doctrine of probabilities, and how much powder and lead is aeeessarily wasted before any man is killed or wounded. Why should he be, he thinks, so mueli nore ualueky thaa aiany other people. So reasoniag, he eooa ean bear the whizzing of bullets with a tolerable degree of equanimity, though he involuntarily dodges or tries to dodge, the cannon balls and shell that goes howling nbout his immediate neighborhood. In the afternooa he is quite a different creaturo from what he was ia the morning, and unwittingly smiles to seen man betray the sanie trepidation which he himself exhibited only n few hours before. The nore he is exposed to fire, the better he can bear it, and the timid being of to-day becomes the hero of to-morrow ; and he whornns from daager on his first battle-field, may run into it on the next, and court the hazard once so dreaded. Thus courage, as itis etyled. is little more, with arost man, than custom; and they soon learn to despise what is threntened without causing them barn. Tron Orr rn Resse River—Mauy of the wining distriets in Rccse River, abound in iron ore of very superior qunlity. In the Mammoth distriet—whieh, like most of the other districts, bas been only partinlly prospected— large beds or ledges of this ore have been found. &

ess The Mining. and Scientific Press. MARKLEVILLE GORRESPONDENOE. Messrs, Epirors:— Our mining interests seem to be looking up a little, and we can begin to see onr prospects In the futnre. The Pioneer quartz mill at this place, which has been lying still for sevcral months, hes again started up, and Is now busily engaged iu ernsh{ng and working rock from the {. X. f., at Silver Mountain. The rock front this clalui not only looks woll, bnt is rich in gold and silver, aud pays exceedingly well. The lust run by tho mill at Silver Moontain, before it broke down, worked abont $80 per tou, and the tailings from the eame run yielded nore than twice that ainount. The 1. X. L. is a good claim, and no mistake. At the point front which this teck was taken it is only about forty feet deep. The Buekeye, No. 1, near the f. X. L., (and by many thought to be the same ledge.) have reached their ledge, and found excellent rock, only nbout fifteen feet below the surface. Ihe ledge was struck only a few days ago, aud up to the last news from there they had not get through the ledge. It is thonght that rock froot this claim will pay at tbe present depth. The Lady Franklin “Company are sinking a shaft 4!y hy 9 feet on their ledye, and are also taking out pay rock. This claim is the farthest up the cefton, and ag yet there is no toad to their claim. ‘The company are expecting to erect machinery oa the clain before going much deeper. The Buckeye, No. 2, have also commenced work upon their claim. This is on the Lady Yranklin Ledge, aud the coinpuuy expect to reach pay rock hefore winter. The Morning Star Company are now preparing to ship their rock to Swnnsea, England. It will cost about $35 per ton to deliver it ia San Francisco, where they Will receive an ad) vance of $75 per ton, and then wait for the teturne from England for the balance. So by this meane, if they ehonld get no more, they are getting about $40 per ton for their ere at the mine, which is net bad to take. Several ether mining companies are pushing ahead with their works, nnd before another year rolls around, we nre going to have better times. I verily believe that tbis region ie destined to eclipse the best miaing regions ol Nevada. The lumbering business has grown to be of /great importanee in this section of the eountry. It is estinated that fourteen millions of feet of tuncber, ineluding timbers and _fire-wood, have been run down the Carson this year. Itis certainly ehameful to cut and earry off to other markete the timber from our owu mines, for the time will come when we shall want every etick of timber within the reaeh of our mines for our own use. A drive of ahout 1,000 eords of fire-wood, besides come 150,000 feet of sawed timbers, destined for Empire City, is now being ruu out of the Middle Fork of the Carson, which passes throngh this city. ‘The citizens ot the town have been out in erowds to-day to eee the drive; and [ can assure you that it ie s sight worth seeing. ’L'o see eeveral hundred eords of wood, of ail eizes and shapes, a!l jammed and crammed, and tumbled in together, as thick as it ean float, and traveling at the rate of about ten miles aa hour, bumping lover the huge bonlders in the river bed, forming jams nnd damntivg up the stream; then breaking loose, aud running like a horde of wild tiffaloes, or like a school of saorting porpoises, while the stream is raging froin the dams just let off, is no ordinary sight. ‘I'he river ia getting very low to mnke the driving good ; but to help the business, large dams are built, with flood-gatee, aad while the duins are colleeting the water, the driverg are eugaged at breaking jams, and getting everything ready for the flood, and when the gates are hoisted, and the water reaclee the drive, the folks like o seu the wood “ git.” Reepeetfully yours, Srrrox, Markleville, August 5, 1865. Snowy Hovsr Froxrs.—It is for the love of show, aad aot for the love of baauty, that so mieh of our town architeeture is bedizened with profuse and tasteless ornameat. Itis put there for the sako of respectability—an advertisement, perhaps; for any reason execpt that it is really loved and appreciated. Itie put outside, not ineide. The owuer of the house takes no delight in eeeing it. He only sets it up as asign to the world of hie own wealth aad iaiportaaee ; very often he putsit all up froat, none at the eides or back; for bie opalence may be only sham opulence, aad he waats . to produce the greatest possible effect with the . smallest expeaditure —Building News. Mechanical. ~ STOWE'S PATENT OHAMBER DRILL. We give, in an advertisement, which may be found in another columm, a representation of Stowe’e Patent Chamber Drill, for blasting purposes, designed for nso in shafts, tunnels, etc. Ly the use of this drill u chamber is rendily excavated, directly in the bottom of the hole, by meuns of which a lifting force is given to the explosion, so as to prodnec from fonr to aix times ag inncli elfect as cnn be obtained fron: a churge deposited in the ordinary straight hole. By an examination of tho annoxed representation. it will be perceived that the force o! the eutters is direct and downwards, similurto a dircet acting drill. The only wear upon this drill is npon the cntters, which ure so constracted and adjusted as to stand almost as much force as a regular drill, aed when worn out, they can be replaced for $2.50 a set. A 13¢ inch hole iny be chainbered ont to 334 inches in diameter, in less time than two inches enn be driven down inn regular drill hole 13g inchee in diameter; while the chamber of a 12g inch hole gives a tnuch greater blasting force thnn a straight bole drilled the entire distance 31g inches in diameter. Hy the use of the chamber, six times tho blusting surfaco is given to a straight hole, in addition to its liRing force. ‘This drill can be worked with a hammer, like an ordinary drill, or by hand, as a churn drill, One sct of cutters will chamber out from 50 to 100 lioles, according to tlhe hardnese of the rock. In einking shafts end tunnels by the use of thie drill, it is estimated that the eoet of the labor aad powder will be reduced to abont onc quarter the expense of the same work done without chambering. The late State Fair in Sacramento awarded to this drill the first premium, for tho following reasons, as elated by the Committee: ‘1st, for the siinplicity of constructioa; 2d, for durability; and 2d, for strength of drill. The importanee of come improvement of this kind, for redncing the expense of sinking ehafte and tuanels, is well worthy the especial attention of the mining public, aad sve would partienlarly call the attention of miners to tho advantages claimed to be derivable in tbe use of this drill. Mr. Stowe is also the iaventor of an expanding drill, espeeially designed for use in sinking artesian and oil wells, nnd fur which he received from the State Fair a special premium. By the use of this drill, a pertectly straight bore ean be made from one qnarter to two inehes longer than tbe inside of the tubing which may be used. It ean be attached to any common drill at an expense of from $25 to $50. The many advantages whieh may be derived from tbe use of sach an instrument, in boring oil wells, must be apparent to all acquainted with sueh work. New Macnutyery ror Piacer Dicerves.— The Folsom Telegraph, in a late number, speaks us follows of a new process for extracting gold from placer diggings : Mr. Iodge, the geatleman who some time sinee diseovered that the drift sand on the Aierican river nod the retl dirt of the bills of this vicinity would pay well for working, has arrived with his patent amalgamator, which will be placed in position at Qnigley’s eteam works, for the purpose of testing its adaptebility to work the gold-bearing dirt in this vieinity. ‘The gentlemaa has no doubt of the eutire eueecss of his iuvention creating a revolution in miaing operations in this ncighborhood; not loag since he tried a ton of red dirt at Sau Franeiseo, with his amalgamator, nad realized from it the sum of sixty dollars. There are millions of tons of the same dirt in this vicinity. ’?he profit and feasibility of the gentleman's invention, however, will sbortly be determined. "Phe inmehinery will Se ia position, and ia ruuning order ia about tea days, as we are informed, when we shall eadeavor to give a deseriptioa of this aew system of miniag. Ia the last namber of the Telegraph we aotice that the macbiaery is now in full operation. We should be pleaeed to receive a description of this aew machinery and learn how it succeeds, Another Oalifornia Invented Breech Loading Oannon. In the Mixtne ann Scientirie Press ef June 3d, we gave qnite a full description of a . breech loading cannon which lind been recent. ly invented hy Mr. Langshore, of Mckelumne ill. and which was pronounced by compotent judges quite on effective and fornidable weapon. We have now to record still another invention in the snine line made by Mr. ‘VT. J. Crannier, of Vullecito. A correspondent of

the San Andrens Register has witnessed the operation of this new instrument of war, of which lie spexks as follows : We had the pleasure of witnessing the shooting ubilitics of this most extraordinury gun, . and are convinced that it will discharge, with all the force und accuracy of good rifles, the incredible number of six lhnndred balls per minute. ‘the entire machineryis encased with a shcet-iron box. The clinrges are couveyed to the cylinder by means of ingenious mnelinery placed above the cylinder. ‘The cylinder is six-and-a-half inclies long, and nine inches in diameter, conta‘ning eighty-fourchambers. On the right hand end of the cyliuder there is placed a rim with notches thereon similar to those in the cylinder of Colt’s pistels. Ou tlie same end of the cylinder there are twenty-eight tubes, Each tubo discharges one volley of these charges, simultaucously. ‘he cylinder rests iu a borizontal position, having n shaft passing through the center, which shaft rests on bearings on oach end. Behind the cylinder is placed the machinery for revolving, loading, capping and firing it, all of which works with tbe saine ease and perfection as Colt's revolver, with the additional improvement of loadtng and capping, The bnrrels, three in number, are placed in a horizontal position in front of the cytinder, fitting the eame nccurately and receiving the charges from the chambers in the cylinders in the same inanner us the harrel of Colt’s pistols. The entire machinery and construction is so accurately arranged that nny ove who caa turn n grind-stone can manage the gun. ‘the correspoadent says it is the inventor's jatention to give a publie exhibition of the power possessed by the model, in a ehort time, either at Murphys or Vallecito. How to make Gooa Irox.—The importance of employing a flux thoroughly euited to the iron ore under treatment has becn carefully pointed out by Professor Fleury, of New York, who rentarks that the flux servesa threefold purpose. Firstly, it facilitates the elimination of the iron by forming easily fusible compounds with the silica aad alumina ia the oro ; seeondiy, it protects the iron from being oxidised again while pussing the blast down the hearth ; and, thirdly, it serves to deprive the iron of most of its impurities, such as silicon, phosphorous, sulpbur, arsenie, &e. The quantity and quality of the finx shonld be adupted to the kind of ore used, Burat lime gives a grent saving of fuel and an exeellent quality of iron with some ores, while with others eomimon limestone and shale, free from quartz veins, give equally good results. The advantage of an oceasional ehemical analysis of the orcs and fluxes used cannot be too much reeommended to the ironmaster’s attention. Professor Flenry has seen instanees, and he ie not, probahly, the only observer of them, where ironmasters were cntirely ignorant of the nature of the flux they used. Hfe snw furnaees worked with the most refractory magnesiam limestone that could be found, using at least one-third too inueh, and, of eourse, delivering a most exeellent quality of ved and cold short pig-iron. To his question as to the reason of their inferior quality of iron, they answered by accusing tbe ore; a bad boy, they said, will never make a good man. ‘Vhey little dreamed that by usiaga better flux, and in mueh sinaller quantity. their iroa eould be made of good quality and at much less cost. Goutn-Saviso Macune 1x Cororaao.—The Blaek Hawk Journal thus mentions a aew ap. paratus lor saving gold : We hear of a new-fangled arastra oa Mill Creek. Working on eurluee quartz, it gets $300 per cord where a stamp-mill only gets $80. Half a ton of stuffis put in at uight aad the same in the morning, and runaing by water —that is all the attention it requires. It is built in an octagonal form, and in each angle beyond the eireuit made by tbe mullers is a quicksilver riffle, where the gold is eaught. In every view of the ease, this ongbt to be termed a neat little arrangemeat. No quicksilver is lost or wasted, it does aot cut nor flour, not eomitg in eontaet with the grinding surfaces at all. We should like to see Clear Creek lined with such machiaes, and there is no reason why it should not be. ‘heir eoaetruetion ard useare clieap, and they do the . work baadsomely. Mr. Blackbura, the man who is running the one of whieh we epeak, aad . who is aa experieneed mill-man and eugiueer, . saye that he bas beea equally successful in treating ore as quartz. He has beea ruuning eteadily for almost eix weeks. Preventing Oxidation of Iron and Steel, According to the patent of Mr. J. B. Chambeyron, of Puris, it is proposed to prevent the oxidation of iro uud steel by the foreed ineerporation of volatile metals having little uffinity for oxygen. ‘inning, zincing, and leadiuz ouly give incomplete resulta, and Mr. Chambeyron has discovered thnt it ie only by incorporating into the iron itselt, and to a eertain depth, ao metal or au olloy little nffected by tbe action of oxygen, and considered practically inoxidi<able, thit iron and steel can be protected from oxidation in sen nnd other acidulatcil waters. ‘The means he employs are to intrsduce zine alone in the state of vapour inte the iron or steel when they ure only to be exposed to the contact of oxygen, and to n volatile alloy or coipound composed ot tin, lead, and zitic in suitablo proportione. ‘The proportione nre about one fifth of lead, one-fifth of tin, one-flfth of zinc, but they may vary when the iron is to remain in corrosive waters. A ligh temperiture being mecessnry to veporise the nictals to be incorporated. The operatiou is performed in cemeuting chambers. ‘lo euch of tho east-iron leads of the upper retorts is adspted a tube, the lower extremity of which is inmersedin the retort, and the npper extreinity is terminated by a funnel. which lus underneath a epheroidal reservoir, furnishcd above and underneath with a tap for shutting off communication eitber with the retorts or with the iuterior of the reservoir. The metals to he incorporated are ponred ina state of fusion iuto this funnel, wbenee they fall into the retort, the high temperature of which converts them very quickly into vapour. In case the pressure obteined by the vepour is not strong enough to produce the incorporetion, he causes a part of the gas to flow from tle gasonieter, where it ie held in reserve, into the retorts. When the metallic vapours have been incorporated in the pores of tbe iron and eteel they will be condensed there by a lowering of the temperature, which is preceded by the introduction of a certain quantity of borax. which by its volatillisation in tbe apparatue will fix the incorporated metale. The retorts will then be opened, after having ascertained by means of a pyrometer that the temperature bas fallen below that at waich the volatillisetioa of the most volatile metel takes place. Ouarn Factory.—Tbe Machias Union says that Boston cepitalists contemplate establishing a factory for the manufacture of vessels’ chains, wire and wire rigging, in one of tbe Eastern towns ot Maine ; and efforts are being made to bave a part of the stock taken there and secure the loeatioa of the factory at Maehias. he capital of the proposed company will be $300,000, and the works will occupy several large buildings, besides a considerable area for wtarves, yards, etc. Steam power is to be used, and from 100 to 200 workmen will be employed. It is stated that there is at present no establishment in this country where wire riggingis nianufactured. «We derive our eupply chiefly from England. Tur Growra or Couracs on tHE Barrie Firtp.—A reasoning man, with a love of adventare, at first feels alarmed ; and his impulse ig to rua away; andif he has no motive to stand he probably doearua. But at each aclditional exposure he grows less timid, and after hearing canister and grape about his ears a dozen times, begins to think he ie not destined to be hurt. He, still feels rather uneasy, perhaps; but the danger aequiree a sort of faseination ; and though he does not wish to be hit he likes to have narrow escapes, and so voluntarily places himself in a position where he can ineur more risk. After a little he begins to reason the matter, and refleet on the doctrine of probabilities, and how much powder and lead is aeeessarily wasted before any man is killed or wounded. Why should he be, he thinks, so mueli nore ualueky thaa aiany other people. So reasoniag, he eooa ean bear the whizzing of bullets with a tolerable degree of equanimity, though he involuntarily dodges or tries to dodge, the cannon balls and shell that goes howling nbout his immediate neighborhood. In the afternooa he is quite a different creaturo from what he was ia the morning, and unwittingly smiles to seen man betray the sanie trepidation which he himself exhibited only n few hours before. The nore he is exposed to fire, the better he can bear it, and the timid being of to-day becomes the hero of to-morrow ; and he whornns from daager on his first battle-field, may run into it on the next, and court the hazard once so dreaded. Thus courage, as itis etyled. is little more, with arost man, than custom; and they soon learn to despise what is threntened without causing them barn. Tron Orr rn Resse River—Mauy of the wining distriets in Rccse River, abound in iron ore of very superior qunlity. In the Mammoth distriet—whieh, like most of the other districts, bas been only partinlly prospected— large beds or ledges of this ore have been found. &