Volume 24 (1872) (424 pages)

72 SCIENTIFIC PRESS. [February 3, 1872. Geientilic Press, WB. EWER. cccse-scerscess cose seeeees SENIOR Enrror. DEWEY & CO., Publishers. GEO. U1. STRONG, W. DB. EWER, JNO. L. BOONE. Office, No. 339 Montgomery St., S. E. Cormer of California St., diagonally opposite Wells, Fargo & Co.'s. SUBSCRIPTION AND ADVERTISING RATES. Anventisine Rates —l week. lmonth. 3 months. 1 ue A, T. DEWEY, Per line. 80 $2.00 One-balf $3 00 7.50 20.00 One inch. 5.00 14.00 36.00 Large advertisements at favorable rates. Special or reading notices, legal advertisements, notices appearing in extraordinary type or in particular parts of the paper, inserted at special rates. A SuRscrrerions payable in adyance—For one year, $4: six monthe, $2.60; three months, $125. Clubs of ten names or more, $3 euch per annum. $5, in advance will pay for 1% year. Remittances by registered letters or P, O. orders at our risk. English and Colonial subscriptions, per year, £1 38.5 6 months, Ils. Advertisements, per line. first insertion, Is.; subsequent insertions, each, 8d. Large advertisements at Special rates. San Francisco: Saturday Morning, Feb. 3, 1872. ———_—————— eel Gold and Legal Tender Rates. San Feancisoo, Wednesday, January 31, 1872.—Legal Tenders buying 913s; selling, 92. Gold in New York to-day, 109%. Table of Contents, Hallidie’s Wire Rope-Way*; Jspanese Watierproof Paper; Mining Review for 1871 65 Mecuanrcat Procress.—Burnt Iron and Burnt Steel; New Instrument for Measuring Speed FAS BEB ocoo upo. oc og edo Ong 0 pons nooo e ae 67 Screntiric Prooress.—Oxalic Acid and Plants: Another Achievement of the Spectroscope: HzaiinameOt @BTONZO sete \sscee ces sce. 67 Miyina Summary.—Reports from Mines in varioua States, Counties and Districts; Stock Reports; Metal and Leather Markets; ShareMolden @ Wireclory.e.04.-. oa 68—69 Artesian Wells; Singular Explosions; Tbe Brunswick Mill; Artesian Wells of San Userun Inrormarion—Vegetable Soap; ElectroPlating ; Deformed and Monstrous Insects; Old Shoes; Goop Hearn. — Glycerine Lymph; Heartburn; Expanding the Lungs71 Earnest Talk With Miners ; Hints to Miners: Geological Museum...eeeereeeee 72 Prices of Mining Stocks During 1871; An Improved Printing Press* ; Loss by Abrasion; To White Pine Subscribers; Wren’s Ore Concentrator...seeeseeeres 13 Domesrio Economy.—The Heating of Our TSIDBYD . .» sey oo wOOmpOQ0d OC Orps ood menan 74 New Incorporations; Mining Accidents; Mining FES co” I oc ey : ——"Tilusirsted. Notices to Correspondents. Eps. Press :—Will you he kind enough to inform me what is the proper composition to put into a oylinder to grease it. A. B. Good clean tallow is generally considered the hsst luhricant. Much of the tallow—especially the cheapsst—in the market has more or less acid, deleterious to the cylinder, which is putin in ‘ doctoring ” or manufacturing the tallow. Lard oil is nsed largely in locomotives and is increasing in general use for steam cylinders. In the West Indies, oocoa oil is used with firstrate effect. The hsst lubricant, however, appears to differ with different cylinders —prohahly on account of the hardness of the grain of the metal—sometimes oil and semetimes tallow proving to he the hest. Instances are known when neither operate Yavorahly, in which case the introdnction of plumhago is made with the oil or tallow. * Two Years In ADVANCE.—Messrs. Chamherlain and Chaffse, of Garrote, Tuolumne Oo., have takenthe advantage of our offer to furnish the Press for two years for the sum of $7 in advance. They take hoth the ScrentrrIo Press and the Paorrio Rorat Press on the same ferms—sending us $14. No douht they will read our weekly issue with alittle oxtra satisfaction, that they are ahead of the time in their patronage, while such friendship and confidence placed in us will certainly stimulate onr efforts to give them hetter puhlications weekly, ere their suhscription ends. Poe Ow Fitz.—Communications from ‘ Eagle Quill” and ‘‘ L. B. H.” Earnest Talk to Miners. [For the Paess—Br Our Minzn—No. 1.} THE MINING tNTEREST. Tt isa very remarkable fsct, that the mining interests of the Pacific Cosst exsrciss less influence over legislation than any other hranch of productivs industry. Manufacturers are proteoted hy tariff laws, capital is encouraged hy partial immunity from taxation, meohanics, artisans and lahorersin almost every department of industry, exoopt mining, have had their hours of toil shortened hy law, while the mining interest appears to bs scarcely considered in either the State or National legialatures. Of the countless laws passed within the past ten years, relating to mining, the grest majority were framed to henefit speculators aud land grahhers at the expense of the miners, It cannot he fairly slleged in explanation of this nsglect of the mining interest, that its importance is subordinate to that of other interests which are encouraged hy spscial legislation and other privileges. It cannot be denied that the mining intorest laid the foundation and sustains the States of California and Nevada, the Territories of Arizona, Idaho and Montana. The commerce and trade of these States and Territories, now so important, would prohahly never have existed hut for the development of this intersst; the great transcontinental railway, and the many lines of steamers which conuect San Francisco with China, Japan, Australia, Mexico and the islands of the Pacific, would not have heen estahlished in our day and generation hut for the development of the mining interest. It is unnecessary to enter into details of the henefits the people of the whole Repuhlic have derived from the development of the mining interest of the Pacific Coast. It is presumed that every intelligent reader will admit that a department of industry, which in alittle more than twenty years has produced upwards of a thousand million dollars worth of hullion, is of sifficient importance to ohtain much more consideration from the State and National Governments than it has received heretofore. In view of the efforts heing made hy spsculators to induce the Federal Government to sell in large parcels the mineral lands of the puhlic domain, agaiust the wishes of the miners, it becomes a question of great importance to every one connected with the mining interest on the Pacific Coast, either as owners of a mine, miner or lahorer, to ascertain why their wishes are disregarded and their interests neglected hy the State and National legislatures. An investigation ofthe subject will show that the cause of this neglect springs from a want of unity of action among the mine owners and miners. The census of 1870 shows that, with the exception of agriculturists, the miners form the largest class of producers in the State. From what we know of them, as a class, we feel certain that this want of unity and consequent loss of influence is not the result of ignorance; hecause we know that among the ranks of the miners of California are gentlemen of ripe scholarship, good hnsiness capacity, great enterprise and energy, we desire to call their attention to this very important suhject of unity of action. We shall devote our hsst efforts to remove this cause of degradation and neglect of the mining interests. For this purpose we respectfully hut earnestly solicit the aid of the miners throughout the Pacific States and Territories to aid us hy their advice and counsel, We desire to obtain materials for framing a correct estimate and reprsssntation of the mining interest, which we helieve can he best obtained through the opinions of individuals who write from their own experience and ohaervations. We dssire that every psrson who feels an intereat in this important suhject to send us their opinion upon all matters relating to the mining interest of the Pacific Coast, which we will condenseand emhody in & series of articles which we helieve will he of very great advantage to that interest. Hints to Miners.—No. 9. In our les&number we promised to continue the suhjsct of Cleaning and Rstorting Gotd Amalgam, and accordingly proceed todo so. When the coarse fragmonts of iron or quartz are removed and the quicksilver fesls homogenous the sponge is again used to remove all the wster. A piece of soft unglazed paperis then plunged through the mercury until it is dry. A small piece of hlanket or flannel five or six inches square is then held hy two corners and drawn toward the operator, while it is lying flat on the surface of the quicksilver. This will clear it of the iron, which, hy a dexterous turn of the cloth may he removed. The hands are again plunged in and hy the agitation, more iron and sand comes to the surface and is taken off ashefore. This operation is repeated until the mereury is perfectly liquid and clean, and until no more impurity rises to the surface when freshly agitated. The Quicksllver. The quicksilver is then poured iuto a linen bag of the proper texture, which retains most of the amalgam. By retorting the mercury which passes through, the halance may be removed. It is not usually thought hest to remove the last traces of gold from the quicksilver, except in a general clean up, or after some special run, where it is required to determine the full yield of a certain lot or sample of rock; for it is found that meroury containing some gold (when there is no hase metal contained init) works much hstter than freshly retorted and consequently pure merenry. When the amalgam has drained sufficiently, it must he removed from the hag and placed with the comparatively olean amalgam from the copper plates. Squeezing the Amatgam. To make the cleaning perfect, all the amalgam is squeezed in a piece of chemois leather or cotton rag, and the hard hall placed in a olean iron pan and hroken down with thethumh. By this treatment it hecomes soft and any fragments of iron or quartz left accidentally in the copperplate amalgam hecome disengaged and may he removed. The whole of the amalgam is again squeszed and the process of “hreaking down” with the thumh repeated, until it heeomes homogenous and hard. It is then rsady for the retort. Retorting. The operation of retorting is so simple that it hardly requires a description, still a8 many inexperienced persons may read this, it will he given. For small operations, the retort used isa deep cast-iron vessel, shaped somewhat like a bowl. The top edge is planed level and upon this fits a cover also plenod level and true, so that when put together the two purts form a perfect joint. From the cover, an iron tuhe rises and hends downward at an angle of ahout 20° from the horizontal. The cover is fastened hy a clamp and set screw. A miszture of wood ashes and clay is prspared hy making them into a thick paste with water. When allis ready, the halls of amalgam are placed in the bowl, the mixture of ashes is put thickly around the edge; the cover is fitted, clamp adjusted, and the whole firmly fixed hy means of the set screw; all the superflnous luting is removed and the retort placed in a furnace over a moderate fire. The end of the pipe must dip just helow the surface of water, placed in any convenient vessel; if the fire is kept well under control there will he no necessity of cooling the pipe. It sometimes happens that when the amalgam has bson imperfectly cleaned that the gold will stick to the retort; this may he obviated hy ohalking the interior of the retort or putting a piece of common writing paper undsr the ball. However, when the amalgam is clean and free from baseness, it will come out easily. _A Convenient Method. A very convenient way to retort is, to drive two stakes into the ground and to fasten asmall iron rod to each at a convenienthight. Upou this ths retort is hung, and around it a fire of small wood is built. [ Wheu the retort has attained a dull red heat, and no more mercury distils over, the fire is put out and the retort allowed to 000]; tho cover is taken off and the hullion removed. It will be found tohe metallic in appearance and of a gold color. It is ready for the melting pot as soon as taken out. Caution in Opening the Retort. It is never safe to open the retort before it is cool, nor will it stand being cooled in water. Many persons have done themselves great injury in their impatience to see the result of an importaut run hy opening the hot retort and inhaling the poisonous mercurial fumes. Retorting Quicksilver Alone. When it is required toretort quicksilver, the retort is uscd in the same way as amalgam, with this exception; a handful of shingle nails is placed ou the surface of the mercury which prevents any violent ehullition of the metal. In all quartz mills there should he a small room expressly for the amalgamator where the amalgam should be taken for treatment. It should he furnished with a strong trough. Just ahove the water, a shelf should be placed upon which to set the pan while cleaning the amalgam. Any quicksilver accidentally spilled while washing may he removed at any time by drawing off the water. The trough should be furnished with a hydrant, which should furnish an abundant supply of water. Geological Museum. Mr. Henry G. Hanks, the assayer, whose fine collections of minerals at the late Mechanics’ Institute Fair attracted so much attention, has estahlished a claim on the gratitude of the mining community hy giving free access to his collection. He has gone fo considerable expense and trouhle in fitting up a large room with fine cahinets and cases in which the numerons minerals, fossils, ete., aro placed and appropriately lahelled. Mr. Hanks, while following his husiness of assayer, chemist and teacher, during a long rssidence in this State, has labored assiduously and successfully incollecting specimens of the various ores, etc., from different parts of the world, and now has a rare and valuahle collection. Differing from the general custom of collectors, Mr. Hanks has kindly thrown open his doors to the general public and cordially invites both residents and visitors to the city to call and sce his specimsns. Miners, tourists, school children ( accompanied hy their teachers ) have free access tothe museum at all times. All young men and old ones, too, who are interested in geology and mineralogy and who are desirous of psrfecting themselves in the knowledge of judging the character of ores will find this an excsllent opportunity of which to avail themselves. More can be learned in one hour hy examining these correctly labelled specimens than hy poring over soms technical work for a month. Miners from the interior who wish to see the diversified character of the ores of the Pacific slopo have here a chance todo so. Ina short time free of cost they can acqnire a better knowledge of the different ores and minerals than could he gained hy traveling among the mines for years. The collection is too varied to admit of any special mention, hut we hope all of our friends inthe interior will bear in mind to call and see it during their visit to town. We are sure from our acquaintance with Mr. Hanks that thoy will be reesived politely and every facility given them for minute observation. The mnseum is sitnated at No. 649 Clay street, hetween Montgomery and Kearny.

72 SCIENTIFIC PRESS. [February 3, 1872. Geientilic Press, WB. EWER. cccse-scerscess cose seeeees SENIOR Enrror. DEWEY & CO., Publishers. GEO. U1. STRONG, W. DB. EWER, JNO. L. BOONE. Office, No. 339 Montgomery St., S. E. Cormer of California St., diagonally opposite Wells, Fargo & Co.'s. SUBSCRIPTION AND ADVERTISING RATES. Anventisine Rates —l week. lmonth. 3 months. 1 ue A, T. DEWEY, Per line. 80 $2.00 One-balf $3 00 7.50 20.00 One inch.. 5.00 14.00 36.00 Large advertisements at favorable rates. Special or reading notices, legal advertisements, notices appearing in extraordinary type or in particular parts of the paper, inserted at special rates. A SuRscrrerions payable in adyance—For one year, $4: six monthe, $2.60; three months, $125. Clubs of ten names or more, $3 euch per annum. $5, in advance will pay for 1% year. Remittances by registered letters or P, O. orders at our risk. English and Colonial subscriptions, per year, £1 38.5 6 months, Ils. Advertisements, per line. first insertion, Is.; subsequent insertions, each, 8d. Large advertisements at Special rates. San Francisco: Saturday Morning, Feb. 3, 1872. ———_—————— eel Gold and Legal Tender Rates. San Feancisoo, Wednesday, January 31, 1872.—Legal Tenders buying 913s; selling, 92. Gold in New York to-day, 109%. Table of Contents, Hallidie’s Wire Rope-Way*; Jspanese Watierproof Paper; Mining Review for 1871 65 Mecuanrcat Procress.—Burnt Iron and Burnt Steel; New Instrument for Measuring Speed FAS BEB ocoo upo. oc og edo Ong 0 pons nooo e ae 67 Screntiric Prooress.—Oxalic Acid and Plants: Another Achievement of the Spectroscope: HzaiinameOt @BTONZO sete \sscee ces sce. 67 Miyina Summary.—Reports from Mines in varioua States, Counties and Districts; Stock Reports; Metal and Leather Markets; ShareMolden @ Wireclory..e.04.-. oa 68—69 Artesian Wells; Singular Explosions; Tbe Brunswick Mill; Artesian Wells of San Userun Inrormarion—Vegetable Soap; ElectroPlating ; Deformed and Monstrous Insects; Old Shoes; Goop Hearn. — Glycerine Lymph; Heartburn; Expanding the Lungs71 Earnest Talk With Miners ; Hints to Miners: Geological Museum......eeeereeeee 72 Prices of Mining Stocks During 1871; An Improved Printing Press* ; Loss by Abrasion; To White Pine Subscribers; Wren’s Ore Concentrator.....seeeseeeres 13 Domesrio Economy.—The Heating of Our TSIDBYD . .» sey oo wOOmpOQ0d OC Orps ood menan 74 New Incorporations; Mining Accidents; Mining FES co” I oc ey : ——"Tilusirsted. Notices to Correspondents. Eps. Press :—Will you he kind enough to inform me what is the proper composition to put into a oylinder to grease it. A. B. Good clean tallow is generally considered the hsst luhricant. Much of the tallow—especially the cheapsst—in the market has more or less acid, deleterious to the cylinder, which is putin in ‘ doctoring ” or manufacturing the tallow. Lard oil is nsed largely in locomotives and is increasing in general use for steam cylinders. In the West Indies, oocoa oil is used with firstrate effect. The hsst lubricant, however, appears to differ with different cylinders —prohahly on account of the hardness of the grain of the metal—sometimes oil and semetimes tallow proving to he the hest. Instances are known when neither operate Yavorahly, in which case the introdnction of plumhago is made with the oil or tallow. * Two Years In ADVANCE.—Messrs. Chamherlain and Chaffse, of Garrote, Tuolumne Oo., have takenthe advantage of our offer to furnish the Press for two years for the sum of $7 in advance. They take hoth the ScrentrrIo Press and the Paorrio Rorat Press on the same ferms—sending us $14. No douht they will read our weekly issue with alittle oxtra satisfaction, that they are ahead of the time in their patronage, while such friendship and confidence placed in us will certainly stimulate onr efforts to give them hetter puhlications weekly, ere their suhscription ends. Poe Ow Fitz.—Communications from ‘ Eagle Quill” and ‘‘ L. B. H.” Earnest Talk to Miners. [For the Paess—Br Our Minzn—No. 1.} THE MINING tNTEREST. Tt isa very remarkable fsct, that the mining interests of the Pacific Cosst exsrciss less influence over legislation than any other hranch of productivs industry. Manufacturers are proteoted hy tariff laws, capital is encouraged hy partial immunity from taxation, meohanics, artisans and lahorersin almost every department of industry, exoopt mining, have had their hours of toil shortened hy law, while the mining interest appears to bs scarcely considered in either the State or National legialatures. Of the countless laws passed within the past ten years, relating to mining, the grest majority were framed to henefit speculators aud land grahhers at the expense of the miners, It cannot he fairly slleged in explanation of this nsglect of the mining interest, that its importance is subordinate to that of other interests which are encouraged hy spscial legislation and other privileges. It cannot be denied that the mining intorest laid the foundation and sustains the States of California and Nevada, the Territories of Arizona, Idaho and Montana. The commerce and trade of these States and Territories, now so important, would prohahly never have existed hut for the development of this intersst; the great transcontinental railway, and the many lines of steamers which conuect San Francisco with China, Japan, Australia, Mexico and the islands of the Pacific, would not have heen estahlished in our day and generation hut for the development of the mining interest. It is unnecessary to enter into details of the henefits the people of the whole Repuhlic have derived from the development of the mining interest of the Pacific Coast. It is presumed that every intelligent reader will admit that a department of industry, which in alittle more than twenty years has produced upwards of a thousand million dollars worth of hullion, is of sifficient importance to ohtain much more consideration from the State and National Governments than it has received heretofore. In view of the efforts heing made hy spsculators to induce the Federal Government to sell in large parcels the mineral lands of the puhlic domain, agaiust the wishes of the miners, it becomes a question of great importance to every one connected with the mining interest on the Pacific Coast, either as owners of a mine, miner or lahorer, to ascertain why their wishes are disregarded and their interests neglected hy the State and National legislatures. An investigation ofthe subject will show that the cause of this neglect springs from a want of unity of action among the mine owners and miners. The census of 1870 shows that, with the exception of agriculturists, the miners form the largest class of producers in the State. From what we know of them, as a class, we feel certain that this want of unity and consequent loss of influence is not the result of ignorance; hecause we know that among the ranks of the miners of California are gentlemen of ripe scholarship, good hnsiness capacity, great enterprise and energy, we desire to call their attention to this very important suhject of unity of action. We shall devote our hsst efforts to remove this cause of degradation and neglect of the mining interests. For this purpose we respectfully hut earnestly solicit the aid of the miners throughout the Pacific States and Territories to aid us hy their advice and counsel, We desire to obtain materials for framing a correct estimate and reprsssntation of the mining interest, which we helieve can he best obtained through the opinions of individuals who write from their own experience and ohaervations. We dssire that every psrson who feels

an intereat in this important suhject to send us their opinion upon all matters relating to the mining interest of the Pacific Coast, which we will condenseand emhody in & series of articles which we helieve will he of very great advantage to that interest. Hints to Miners.—No. 9. In our les&number we promised to continue the suhjsct of Cleaning and Rstorting Gotd Amalgam, and accordingly proceed todo so. When the coarse fragmonts of iron or quartz are removed and the quicksilver fesls homogenous the sponge is again used to remove all the wster. A piece of soft unglazed paperis then plunged through the mercury until it is dry. A small piece of hlanket or flannel five or six inches square is then held hy two corners and drawn toward the operator, while it is lying flat on the surface of the quicksilver. This will clear it of the iron, which, hy a dexterous turn of the cloth may he removed. The hands are again plunged in and hy the agitation, more iron and sand comes to the surface and is taken off ashefore. This operation is repeated until the mereury is perfectly liquid and clean, and until no more impurity rises to the surface when freshly agitated. The Quicksllver. The quicksilver is then poured iuto a linen bag of the proper texture, which retains most of the amalgam. By retorting the mercury which passes through, the halance may be removed. It is not usually thought hest to remove the last traces of gold from the quicksilver, except in a general clean up, or after some special run, where it is required to determine the full yield of a certain lot or sample of rock; for it is found that meroury containing some gold (when there is no hase metal contained init) works much hstter than freshly retorted and consequently pure merenry. When the amalgam has drained sufficiently, it must he removed from the hag and placed with the comparatively olean amalgam from the copper plates. Squeezing the Amatgam. To make the cleaning perfect, all the amalgam is squeezed in a piece of chemois leather or cotton rag, and the hard hall placed in a olean iron pan and hroken down with thethumh. By this treatment it hecomes soft and any fragments of iron or quartz left accidentally in the copperplate amalgam hecome disengaged and may he removed. The whole of the amalgam is again squeszed and the process of “hreaking down” with the thumh repeated, until it heeomes homogenous and hard. It is then rsady for the retort. Retorting. The operation of retorting is so simple that it hardly requires a description, still a8 many inexperienced persons may read this, it will he given. For small operations, the retort used isa deep cast-iron vessel, shaped somewhat like a bowl. The top edge is planed level and upon this fits a cover also plenod level and true, so that when put together the two purts form a perfect joint. From the cover, an iron tuhe rises and hends downward at an angle of ahout 20° from the horizontal. The cover is fastened hy a clamp and set screw. A miszture of wood ashes and clay is prspared hy making them into a thick paste with water. When allis ready, the halls of amalgam are placed in the bowl, the mixture of ashes is put thickly around the edge; the cover is fitted, clamp adjusted, and the whole firmly fixed hy means of the set screw; all the superflnous luting is removed and the retort placed in a furnace over a moderate fire. The end of the pipe must dip just helow the surface of water, placed in any convenient vessel; if the fire is kept well under control there will he no necessity of cooling the pipe. It sometimes happens that when the amalgam has bson imperfectly cleaned that the gold will stick to the retort; this may he obviated hy ohalking the interior of the retort or putting a piece of common writing paper undsr the ball. However, when the amalgam is clean and free from baseness, it will come out easily. _A Convenient Method. A very convenient way to retort is, to drive two stakes into the ground and to fasten asmall iron rod to each at a convenienthight. Upou this ths retort is hung, and around it a fire of small wood is built. [ Wheu the retort has attained a dull red heat, and no more mercury distils over, the fire is put out and the retort allowed to 000]; tho cover is taken off and the hullion removed. It will be found tohe metallic in appearance and of a gold color. It is ready for the melting pot as soon as taken out. Caution in Opening the Retort. It is never safe to open the retort before it is cool, nor will it stand being cooled in water. Many persons have done themselves great injury in their impatience to see the result of an importaut run hy opening the hot retort and inhaling the poisonous mercurial fumes. Retorting Quicksilver Alone. When it is required toretort quicksilver, the retort is uscd in the same way as amalgam, with this exception; a handful of shingle nails is placed ou the surface of the mercury which prevents any violent ehullition of the metal. In all quartz mills there should he a small room expressly for the amalgamator where the amalgam should be taken for treatment. It should he furnished with a strong trough. Just ahove the water, a shelf should be placed upon which to set the pan while cleaning the amalgam. Any quicksilver accidentally spilled while washing may he removed at any time by drawing off the water. The trough should be furnished with a hydrant, which should furnish an abundant supply of water. Geological Museum. Mr. Henry G. Hanks, the assayer, whose fine collections of minerals at the late Mechanics’ Institute Fair attracted so much attention, has estahlished a claim on the gratitude of the mining community hy giving free access to his collection. He has gone fo considerable expense and trouhle in fitting up a large room with fine cahinets and cases in which the numerons minerals, fossils, ete., aro placed and appropriately lahelled. Mr. Hanks, while following his husiness of assayer, chemist and teacher, during a long rssidence in this State, has labored assiduously and successfully incollecting specimens of the various ores, etc., from different parts of the world, and now has a rare and valuahle collection. Differing from the general custom of collectors, Mr. Hanks has kindly thrown open his doors to the general public and cordially invites both residents and visitors to the city to call and sce his specimsns. Miners, tourists, school children ( accompanied hy their teachers ) have free access tothe museum at all times. All young men and old ones, too, who are interested in geology and mineralogy and who are desirous of psrfecting themselves in the knowledge of judging the character of ores will find this an excsllent opportunity of which to avail themselves. More can be learned in one hour hy examining these correctly labelled specimens than hy poring over soms technical work for a month. Miners from the interior who wish to see the diversified character of the ores of the Pacific slopo have here a chance todo so. Ina short time free of cost they can acqnire a better knowledge of the different ores and minerals than could he gained hy traveling among the mines for years. The collection is too varied to admit of any special mention, hut we hope all of our friends inthe interior will bear in mind to call and see it during their visit to town. We are sure from our acquaintance with Mr. Hanks that thoy will be reesived politely and every facility given them for minute observation. The mnseum is sitnated at No. 649 Clay street, hetween Montgomery and Kearny.