Volume 09 (1864) (434 pages)

Che Rining and Scientific Lvess, 195 Gotp Minixe is Great Barrars.—A_ wri ter in the London Mining Journal appears to think that the gold fields of Great Britain nre deserving of more attention than has hitherto heen devoted to them. lle thinks it strange that they should havo been digging und delying after gould in Australia, New Zealand, and California, and neglected looking a ter their own gold fields nt pome; especiully after n prospectus has been put forth by u well known and reliable company, in which it is stated that 788 ounces hove been obtained from 1 ton of ore, that 90914 tons of oro havo produced G,148 ounees of gold, all nf which has been soll to the Bank of England. Now, if such results can bo obtained from the quartz rocks of Wales, why, asks the writer, shold not like results he obtained from similar rocks in England ? The writer claims that the silicious rocks of several districts. and known to be impregfated with the precious metnls, both gold and silver, and thinks tle ouly reason why they are not made to pay is the lack of expericnce und knowlcdgo in treating the ores. Tur Woe Proerss.—Hopkiu’s novelty Quartz Mill and Amalgamator on exhibition at the Fair, performs the wholo proeess of erushing the rock, amalgamating the metals and forming the har of butlion, so that those enrivus to know how the gold and silver is obtained from the rock may have an opportunity of witnossing the interesting proeess without taking atrip te the mountains. On Saturday Mr. Hopkius ohtaincd quite a large bar of bullion from a quautity of ore from Aurora, much to the satisfaction of the owners of the elaim from which it was taken, and to the interest nf a crowd of visitors who watched the process to completion. Tne Wink West.—The Wide West commenced crushing from their old vein, recently re-opened tn their upper chamber. They will make a two weeks’ run before cleaning up. ‘The Superintendent writes that the rock is improving, and hopes to realize $60 per ton. After this clenuing np he expects to be able to keep the mill ranning full time. It is now ranning only during the day. Tue Bure Lenas, El Dorado, are down with shaft No. 5, 102 feet, and commenced driftiug last week; they also started up the mill on rock from this shaft, which is in the regular “blue ledge,” aud will make a ten day’s run before cleaning up. Tho Superintendent writes encouragingly with regard tn the appearance of the roek. ; Tar Overnaxn Mar has resumed its regular trips. The stations have been rehuilt, and station-keepers, stoek and provisions distributed along the route. , The Postmaster of this city, gives notice that all letters will hereafter be sent Overlaud, unless otherwise ordered hy their writers. Tae Sanitary Funn has realized over $1,800 from the fees derived from visitors to the CaManche. The colleetors at the gates have reeently been furnished with a small eard, just the size for a gentleman to tuek in his vest poeket, whieh they present to the visitors as they pass in, on which is printed the measurement aud weight of the most important parts nf the Monitor. Lusus Natura#.—The Stockton Jndependent says there is a “ Side Show” at the Fair Grounds in that city, which cousists of a tentoed ox, a three-legged bull ealf, a threelegged dog and the celehrated upright game cock. Of'all the curious freaks of nature these cap the elimax, aud their equal is rarely to be seen. Hear ann Lacur.—If a body, sneh as a pieee of iron, be heated and ollowed to eool iu the open air,'the heat gradually passes off from the surfaceio straight lines, in the form of rays, in the Saine manner as light proceeds from the eaudle of the sun; this is eulled radiant heat. Radiant heat is supposed to move With the same velocity as light; that is, at the tate of 192,000 miles per seeond. Treasury Arriven.—The steamer Sierra Nevada arrived Monday, from Portland and Victoria, briuging $205,000 in treasure, tho mails, and a large number of passengers. (From The Dilly Falr ress of September 2ist.} THE LESSON OF THE AGE. An American citizen whose heart is warined with the emotions that characterize the putriot, must feel proud ut tho progress his country hag made in all the arts, scienevs and inanvfactures, during the comparatively brief period of its existence, and pain intenseat the thonght ol the dangers which peril the continnance of those free institutions that have coused this glorious progress, and nade Aimerica the lending nation in the world’s civilization. ‘Iho experiment we have made belore the world, that mou are enpnblo of self-government, has proved so sucevaslul that crowned mouarclis, feariug the progress and spread of the doctrine that all men are created free and equal, have conspired to destroy the grand monnments of Republicanism reured on this soil, and view with satisfaction the fearful internecine strife néw raging hetweeu Right and Wrong, between Freedom and Slavery. But laying this deplorable view of the subject aside, what a matter for pride aud rejoicing is all else counceted with our coontry’s history aud progress. Wheu the independenee of the original thirteen States was first achieved, on the reeords of the whole civilized world not more than one thousand inventions were entered ; within the past sixty yeurs, only, more than sixty thousand inventions have beeu recorded at the patent office at Washingtou. Inventious that have revolutionized the ideas of the world in the orts, scienses and mannfactures, as inuch as our free institutions have revolutionized tho thoughts of men in tho theory of government. ‘The steam engine has here received its greatest improvements and most various npplication to human industry. The electric telegraph is peeuliarly an American institution, while sawing, planing, turning, and agricultural machines, have won the prize for American genius, against a world of competitors. ‘Tho sewing machine, that has made millions of homes happy by rendering woman's toils lighter, is another monuimeut to American genius, while look at the objects at the Mechanies’ Fair, a peculiarly local exhibition. Tere, where a dozen years ago the wisest of men disearded the idea of effecting a permanent loeation in a district of ever moving saud and rugged rocky hills, we find laid out one of the fincst cities in the United States, crowded with more than 120,000 of the most vigorous, euergetie and enterprising people in the world—whose iotereourse and trade ramifies to the Orient and the Oeeident; to whom India, China, Japan and the Islands of the ocean on the one hand pay trihute of their products, while on the other the trade aud commeree and markets of the whole of Europe are governed by the supply of her staples of gold, silver, grain, wool, and wine. Look around the huge Pavilion crowded with the products of our soil, our mines and mauufaetures. Is there a single brinch nnrepresented? If in twelvo years wehave aeeomplished so inueh while overeoming the prejudiees and a yearning for home that distraeted the love of the majority between the new State of their adoption and that of their birth, what may not be expected ofa country so blessed in climate, soil, products and people as Califoruia. ‘The lesson of the age to us teaelies fidelity to ourselves, our duty, and justiee, and the imagination eannot reach the lintits of our progress. But if we betray the trust reposed in us, by destroying tle cause of eountry and humanity, our prosperity will be blighted and progress delayed. The couutry we possess was the possession of our neighhors; who by petty wars and subdivisions of their eountry prevented the development of its resources. Let this be the lesson of the age to us; let their example be a beacon to guard us from fouudering on the shoals of division. Let us never forget that united we stand, divided we fall; aud remerobering this, let us hattle for tho Union. To Prevent Mix rrom Turntno Sour.— To eaeh quart of milk add fifteen grains of bicarbonate of soda. This addition will not affect the taste of the milk, and ,it promotes di. gestion. “Muires is Panvo,” is a niest appropriate expression to apply to Mr. Fnuchery's. miniature turbine wheel which le exhibits at the Pavilion. Last evening a two stamp battery, weighing 250 ponuds, was hitched on to this little wheel, which walked off with the load quite easily, and at the msual speed for sneh work, This is quite a feat for a wheel 217 inches in diameter. It is a dunble turbine, of Mr. Pauchery's inventiou, and ig driven hy an ineh water pipe, with 200 feet head. The driving shaft is ouly 12 inches long. Tho wheel inakes 5,000 ravolutious a nfinute. ‘The power is taken off from the driving shaft by two pulley’s of nbont the same diameter as tho whecl, and the speed redneed by iutervening pulleys and gearing. ilunsoy’s Puwe—The great improvement on a most useful machine by Mr. udson and one which gained for him the silver medal at a previous Mechanies’ Fair, is well illustrated by the splendid pumps he has on exhibition at the present one. The peculiarity of this pump is that while it has more valves than any other, enabling it to combine the powers of the rotary-tilt and foree pump principles, it is so arranged that it ig almost impossible for it to get out of order. These pumps work so easy that a ehild can raise a respeetable stream of water froma depth of 102 fect and force it up an hight of 100 fect or more. ‘I'he beautiful working model on exhibitiou at the Fair is well deserving of notice. Aw Excetient Retorn.—Mr. Joseph Healy hos shown us the ecertifieate of a working assay of ten ponnds ef rock from the Aspinwall Company’s lode, Amador District, Reese River, giving us a result of $8.26 in gold and $240 in silver. The bar aceompanying the certificate is a handsome gunranty of the quality of the ore. We understand the pay quartz of the lode is now developed two feet in thickness at the depth of forty-five feet. The memhers of the Aspinwall Compauy are in earucst, and are bouud to prove the ledge. Anorner Rise.—The California Navigation Company, raised the rates of fair betwecu this city and Sacramento to $3, immediately after the late disaster to the Washoe. We understand that another advance was made on Monday last, to $5, which we presume is te he the regular rato in future—or until unother opposition hoat makes its appearance on the river. A. Metroronocicat Paenomenon.—A heavy mist loaded with dust, and aceompanied with a fierce, hot sun overhead, oceurred on the coast, helow Point Coneepcion, on the afternoon of Sunday, the 11th September. The thermometer rose to 90 degrees in the shade, without a breath of wind, and it is supposed it was from the tail end of a Colorado or Mojave sirocco, which had got blown out as it drifted towards the eoast. It was attended, we are juformed, with great heat and lassitude. Buy a Viexer.—Visitors at the Pavilion should hear in mind: the fact that the heautiful and costly French earom Phelau billiard tahle, there on exhibition, is to be raffled off at the close of the Fair, and that Mr. Hughes has donated the entire proceeds to the Sanitary Fund. A dollar paid for a ticket isa dollar given direct in aid of the sick and wounded soldiers of the Union. Axotuer Steam Fire Engine, for the Tigers, No. 14, arrived ou the steamer Golden City. It is similar to the one on exhibition at the Pavilion, and by the side of whieh it will he plaeed ou exhibition, in a day or two. Ciry Vatuation.—The assessment rolls of this city, which have just been eompleted, show a valuation of real estate at $47,292,904 ; and personal property at $33,433,261, making a total of $80,738, 164, as the property valuation of San Fraueiseo. Tur Oiprst Ben. i America is to-be found in the Catholic chapel in the village of St. Regis, on the St. Lawrence river. It was taken Irom Deerfield at the period of the Freuch and Indian invasion, 170-L, suspended on a polo, and camnied by Indians through the wilderuess to its-prescnt location. 4 New Booxs—.Among the long list of new ‘books received at the extensive establishment of A. Roman & Co,, 417 and 419 Montgomery street, is the most valuable work on metallurgy ever published on the Vacifig coast—Kustel's great work on the process for extracting gold und silver—countaining the recent diseoveries in this important branch of science, with details of tests, descriptions of ores and apparatus, written in terms so plain that ond one can onderstand them—prieo $6; every miner and mill owner, ond those interested in niping, should possess one of these books of reference. Fuyo Pano, a Chinese merchant of Canton, now in this city, lias entered his antograph signature iu tho book kept at the Pavilion Tur that purpose, as a contrihutior to the “ Lineoln Len.” The Chinanien are eoutributing quite frecly to the Sanitury fund. Hayseom'’s Crusner.—The engraver is now employed io exeeuting a fine drawing of this modest, but very important machino. It is really one of the best inveutions brought out at the present Fair. Revivat or an Onp Art.—Nile & Kollmyer, ornamentors und gilders, in the Russ Hous Block, have revived the ormolu style of gilding, so mueh in vogne in the middle ages. They exhibit a nunher of elegant articles at the Fair, in this ormolu nnd other methods of gilding, which are beautilully done. They have a good aud established reputation. Quartz Mint Burnen.—The Hinchman Ml, Placerville, was burned on Thursday uight. This was one of the finest mills iu the State and was insured for $10,000. ‘Ihe firo was the work of nn incendiary. Kxyowtencr 1s Power.—If you desire to. have this power, and require any deseription nf book on Meehanies, Engineoring, Miueralogy or any other ology or seience, just send your orders to H. H. Bancroft, 609 Montgomery street, who has the largest stock of such hooks in the State. Jt Pays ror Itserr.—Dunhar’s Patent _ Self-Adjusting Piston Paeking, on exhihition at the Pavilion, is one of the most economical of all the modern applianees to steam engines. Jt is equally good for uew or old cylinders. Nu engineer or machinist should leave the Fair without seeing them. Preserve Your Parrr.—As many important artieles are inserted in this paper whieh de not find their way into any other journal, parties receiving copies will do well to file them, as ofteutimes yeferenee to a single paragraph may prove of great value. Mr. Jacos Surw, at his extensivo photographic gallery, 315 Montgomery street, shows at the Fair, what-ho can do in the art of which. he is such a proficient. The pictures in his gallery are execnted in the very highest style of the art. New Guyrowner——A correspondent mentions that a new kind of gunpowder, mauufactured by the use of saw-dust, is being used with sucecss for mining purposes at Dutch’ Flat. Will somo oue give us more light on the suhject. How to Stor a Leaxy Roor.—The season is fast approaching when it will be essential to have tight roofs. ‘I'his may be easily obtained and all leaks stopped by attending to the following direetions from a correspondent of the California Farmer: Cover the roof with canvass of some kind, boil eoal tar till it lays stillin the kettle ; make a swab of a pieee of sheepskin with wool on, and swab the tar ou hot; give it two coats and the johis done. J had a yoo!’ that leaked, .fonr years ago last fall; 1 simply eovered it with drilling, and the next fall 1 swabbed twothirds of it with pine or common tar, and the other third, as an experiment, 1 eovered with coal tar as above ; the result was that the part covered with pine tar, all rotted and eamc off in one year, while that portion eovered with coal tar, is apparently as good as ever. Excettence anp Economy.—These tivo important qualifications are eombined in the beautifal photographs taken by Beardsley & Swasey, No. 205 Third street, ucar Howard ; a fact which may be proven by a single trial.

Che Rining and Scientific Lvess, 195 Gotp Minixe is Great Barrars.—A_ wri ter in the London Mining Journal appears to think that the gold fields of Great Britain nre deserving of more attention than has hitherto heen devoted to them. lle thinks it strange that they should havo been digging und delying after gould in Australia, New Zealand, and California, and neglected looking a ter their own gold fields nt pome; especiully after n prospectus has been put forth by u well known and reliable company, in which it is stated that 788 ounces hove been obtained from 1 ton of ore, that 90914 tons of oro havo produced G,148 ounees of gold, all nf which has been soll to the Bank of England. Now, if such results can bo obtained from the quartz rocks of Wales, why, asks the writer, shold not like results he obtained from similar rocks in England ? The writer claims that the silicious rocks of several districts. and known to be impregfated with the precious metnls, both gold and silver, and thinks tle ouly reason why they are not made to pay is the lack of expericnce und knowlcdgo in treating the ores. Tur Woe Proerss.—Hopkiu’s novelty Quartz Mill and Amalgamator on exhibition at the Fair, performs the wholo proeess of erushing the rock, amalgamating the metals and forming the har of butlion, so that those enrivus to know how the gold and silver is obtained from the rock may have an opportunity of witnossing the interesting proeess without taking atrip te the mountains. On Saturday Mr. Hopkius ohtaincd quite a large bar of bullion from a quautity of ore from Aurora, much to the satisfaction of the owners of the elaim from which it was taken, and to the interest nf a crowd of visitors who watched the process to completion. Tne Wink West.—The Wide West commenced crushing from their old vein, recently re-opened tn their upper chamber. They will make a two weeks’ run before cleaning up. ‘The Superintendent writes that the rock is improving, and hopes to realize $60 per ton. After this clenuing np he expects to be able to keep the mill ranning full time. It is now ranning only during the day. Tue Bure Lenas, El Dorado, are down with shaft No. 5, 102 feet, and commenced driftiug last week; they also started up the mill on rock from this shaft, which is in the regular “blue ledge,” aud will make a ten day’s run before cleaning up. Tho Superintendent writes encouragingly with regard tn the appearance of the roek. ; Tar Overnaxn Mar has resumed its regular trips. The stations have been rehuilt, and station-keepers, stoek and provisions distributed along the route. , The Postmaster of this city, gives notice that all letters will hereafter be sent Overlaud, unless otherwise ordered hy their writers. Tae Sanitary Funn has realized over $1,800 from the fees derived from visitors to the CaManche. The colleetors at the gates have reeently been furnished with a small eard, just the size for a gentleman to tuek in his vest poeket, whieh they present to the visitors as they pass in, on which is printed the measurement aud weight of the most important parts nf the Monitor. Lusus Natura#.—The Stockton Jndependent says there is a “ Side Show” at the Fair Grounds in that city, which cousists of a tentoed ox, a three-legged bull ealf, a threelegged dog and the celehrated upright game cock. Of'all the curious freaks of nature these cap the elimax, aud their equal is rarely to be seen. Hear ann Lacur.—If a body, sneh as a pieee of iron, be heated and ollowed to eool iu the open air,'the heat gradually passes off from the surfaceio straight lines, in the form of rays, in the Saine manner as light proceeds from the eaudle of the sun; this is eulled radiant heat. Radiant heat is supposed to move With the same velocity as light; that is, at the tate of 192,000 miles per seeond. Treasury Arriven.—The steamer Sierra Nevada arrived Monday, from Portland and Victoria, briuging $205,000 in treasure, tho mails, and a large number of passengers. (From The Dilly Falr ress of September 2ist.} THE LESSON OF THE AGE. An American citizen whose heart is warined with the emotions that characterize the putriot, must feel proud ut tho progress his country hag made in all the arts, scienevs and inanvfactures, during the comparatively brief period of its existence, and pain intenseat the thonght ol the dangers which peril the continnance of those free institutions that have coused this glorious progress, and nade Aimerica the lending nation in the world’s civilization. ‘Iho experiment we have made belore the world, that mou are enpnblo of self-government, has proved so sucevaslul that crowned mouarclis, feariug the progress and spread of the doctrine that all men are created free and equal, have conspired to destroy the grand monnments of Republicanism reured on this soil, and view with satisfaction the fearful internecine strife néw raging hetweeu Right and Wrong, between Freedom and Slavery. But laying this deplorable view of the subject aside, what a matter for pride aud rejoicing is all else counceted with our coontry’s history aud progress. Wheu the independenee of the original thirteen States was first achieved, on the reeords of the whole civilized world not more than one thousand inventions were entered ; within the past sixty yeurs, only, more than sixty thousand inventions have beeu recorded at the patent office at Washingtou. Inventious that have revolutionized the ideas of the world in the orts, scienses and mannfactures, as inuch as our free institutions have revolutionized tho thoughts of men in tho theory of government. ‘The steam engine has here received its greatest improvements and most various npplication to human industry. The electric telegraph is peeuliarly an American institution, while sawing, planing, turning, and agricultural machines, have won the prize for American genius, against a world of competitors. ‘Tho sewing machine, that has made millions of homes happy by rendering woman's toils lighter, is another monuimeut to American genius, while look at the objects at the Mechanies’ Fair, a peculiarly local exhibition. Tere, where a dozen years ago the wisest of men disearded the idea of effecting a permanent loeation in a district of ever moving saud and rugged rocky hills, we find laid out one of the fincst cities in the United States, crowded with more than 120,000 of the most vigorous, euergetie and enterprising people in the world—whose iotereourse and trade ramifies to the Orient and the Oeeident; to whom India, China, Japan and the Islands of the ocean on the one hand pay trihute of their products, while on the other the trade aud commeree and markets of the whole of Europe are governed by the supply of her staples of gold, silver, grain, wool, and wine. Look around the huge Pavilion crowded with the products of our soil, our mines and mauufaetures. Is there a single brinch nnrepresented? If in twelvo years wehave aeeomplished so inueh while overeoming the prejudiees and a yearning for home that distraeted the love of the majority between the new State of their adoption and that of their birth, what may not be expected ofa country so blessed in climate, soil, products and people as Califoruia. ‘The lesson of the age to us teaelies fidelity to ourselves, our duty, and justiee, and the imagination eannot reach the lintits of our progress. But if we betray the trust reposed in us, by destroying tle cause of eountry and humanity, our prosperity will be blighted and progress delayed. The couutry we possess was the possession of our neighhors; who by petty wars and subdivisions of their eountry prevented the development of its resources. Let this be the lesson of the age to us; let their example be a beacon to guard us from fouudering on the shoals of division. Let us never forget that united we stand, divided we fall; aud remerobering this, let us hattle for tho Union. To Prevent Mix rrom Turntno Sour.— To eaeh quart of milk add fifteen grains of bicarbonate of soda. This addition will not affect the taste of the milk, and ,it promotes di. gestion. “Muires is Panvo,” is a niest appropriate expression to apply to Mr. Fnuchery's. miniature turbine wheel which le exhibits at the Pavilion. Last evening a two stamp battery, weighing 250 ponuds, was hitched on to this little wheel, which walked off with the load quite easily, and at the msual speed for sneh work, This is quite a feat for a wheel 217 inches in diameter. It is a dunble turbine, of Mr. Pauchery's inventiou, and ig driven hy an

ineh water pipe, with 200 feet head. The driving shaft is ouly 12 inches long. Tho wheel inakes 5,000 ravolutious a nfinute. ‘The power is taken off from the driving shaft by two pulley’s of nbont the same diameter as tho whecl, and the speed redneed by iutervening pulleys and gearing. ilunsoy’s Puwe—The great improvement on a most useful machine by Mr. udson and one which gained for him the silver medal at a previous Mechanies’ Fair, is well illustrated by the splendid pumps he has on exhibition at the present one. The peculiarity of this pump is that while it has more valves than any other, enabling it to combine the powers of the rotary-tilt and foree pump principles, it is so arranged that it ig almost impossible for it to get out of order. These pumps work so easy that a ehild can raise a respeetable stream of water froma depth of 102 fect and force it up an hight of 100 fect or more. ‘I'he beautiful working model on exhibitiou at the Fair is well deserving of notice. Aw Excetient Retorn.—Mr. Joseph Healy hos shown us the ecertifieate of a working assay of ten ponnds ef rock from the Aspinwall Company’s lode, Amador District, Reese River, giving us a result of $8.26 in gold and $240 in silver. The bar aceompanying the certificate is a handsome gunranty of the quality of the ore. We understand the pay quartz of the lode is now developed two feet in thickness at the depth of forty-five feet. The memhers of the Aspinwall Compauy are in earucst, and are bouud to prove the ledge. Anorner Rise.—The California Navigation Company, raised the rates of fair betwecu this city and Sacramento to $3, immediately after the late disaster to the Washoe. We understand that another advance was made on Monday last, to $5, which we presume is te he the regular rato in future—or until unother opposition hoat makes its appearance on the river. A. Metroronocicat Paenomenon.—A heavy mist loaded with dust, and aceompanied with a fierce, hot sun overhead, oceurred on the coast, helow Point Coneepcion, on the afternoon of Sunday, the 11th September. The thermometer rose to 90 degrees in the shade, without a breath of wind, and it is supposed it was from the tail end of a Colorado or Mojave sirocco, which had got blown out as it drifted towards the eoast. It was attended, we are juformed, with great heat and lassitude. Buy a Viexer.—Visitors at the Pavilion should hear in mind: the fact that the heautiful and costly French earom Phelau billiard tahle, there on exhibition, is to be raffled off at the close of the Fair, and that Mr. Hughes has donated the entire proceeds to the Sanitary Fund. A dollar paid for a ticket isa dollar given direct in aid of the sick and wounded soldiers of the Union. Axotuer Steam Fire Engine, for the Tigers, No. 14, arrived ou the steamer Golden City. It is similar to the one on exhibition at the Pavilion, and by the side of whieh it will he plaeed ou exhibition, in a day or two. Ciry Vatuation.—The assessment rolls of this city, which have just been eompleted, show a valuation of real estate at $47,292,904 ; and personal property at $33,433,261, making a total of $80,738, 164, as the property valuation of San Fraueiseo. Tur Oiprst Ben. i America is to-be found in the Catholic chapel in the village of St. Regis, on the St. Lawrence river. It was taken Irom Deerfield at the period of the Freuch and Indian invasion, 170-L, suspended on a polo, and camnied by Indians through the wilderuess to its-prescnt location. 4 New Booxs—.Among the long list of new ‘books received at the extensive establishment of A. Roman & Co,, 417 and 419 Montgomery street, is the most valuable work on metallurgy ever published on the Vacifig coast—Kustel's great work on the process for extracting gold und silver—countaining the recent diseoveries in this important branch of science, with details of tests, descriptions of ores and apparatus, written in terms so plain that ond one can onderstand them—prieo $6; every miner and mill owner, ond those interested in niping, should possess one of these books of reference. Fuyo Pano, a Chinese merchant of Canton, now in this city, lias entered his antograph signature iu tho book kept at the Pavilion Tur that purpose, as a contrihutior to the “ Lineoln Len.” The Chinanien are eoutributing quite frecly to the Sanitury fund. Hayseom'’s Crusner.—The engraver is now employed io exeeuting a fine drawing of this modest, but very important machino. It is really one of the best inveutions brought out at the present Fair. Revivat or an Onp Art.—Nile & Kollmyer, ornamentors und gilders, in the Russ Hous Block, have revived the ormolu style of gilding, so mueh in vogne in the middle ages. They exhibit a nunher of elegant articles at the Fair, in this ormolu nnd other methods of gilding, which are beautilully done. They have a good aud established reputation. Quartz Mint Burnen.—The Hinchman Ml, Placerville, was burned on Thursday uight. This was one of the finest mills iu the State and was insured for $10,000. ‘Ihe firo was the work of nn incendiary. Kxyowtencr 1s Power.—If you desire to. have this power, and require any deseription nf book on Meehanies, Engineoring, Miueralogy or any other ology or seience, just send your orders to H. H. Bancroft, 609 Montgomery street, who has the largest stock of such hooks in the State. Jt Pays ror Itserr.—Dunhar’s Patent _ Self-Adjusting Piston Paeking, on exhihition at the Pavilion, is one of the most economical of all the modern applianees to steam engines. Jt is equally good for uew or old cylinders. Nu engineer or machinist should leave the Fair without seeing them. Preserve Your Parrr.—As many important artieles are inserted in this paper whieh de not find their way into any other journal, parties receiving copies will do well to file them, as ofteutimes yeferenee to a single paragraph may prove of great value. Mr. Jacos Surw, at his extensivo photographic gallery, 315 Montgomery street, shows at the Fair, what-ho can do in the art of which. he is such a proficient. The pictures in his gallery are execnted in the very highest style of the art. New Guyrowner——A correspondent mentions that a new kind of gunpowder, mauufactured by the use of saw-dust, is being used with sucecss for mining purposes at Dutch’ Flat. Will somo oue give us more light on the suhject. How to Stor a Leaxy Roor.—The season is fast approaching when it will be essential to have tight roofs. ‘I'his may be easily obtained and all leaks stopped by attending to the following direetions from a correspondent of the California Farmer: Cover the roof with canvass of some kind, boil eoal tar till it lays stillin the kettle ; make a swab of a pieee of sheepskin with wool on, and swab the tar ou hot; give it two coats and the johis done. J had a yoo!’ that leaked, .fonr years ago last fall; 1 simply eovered it with drilling, and the next fall 1 swabbed twothirds of it with pine or common tar, and the other third, as an experiment, 1 eovered with coal tar as above ; the result was that the part covered with pine tar, all rotted and eamc off in one year, while that portion eovered with coal tar, is apparently as good as ever. Excettence anp Economy.—These tivo important qualifications are eombined in the beautifal photographs taken by Beardsley & Swasey, No. 205 Third street, ucar Howard ; a fact which may be proven by a single trial.