The Assayer's Guide; Or, Practical Directions to Assayers, Miners, and Smelters: For the Tests and Assays, by Heat and Wet Processes, of the Ores of All the Principal Metals, of Gold and Silver Coins and Alloys, and of Coal, &c |
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Page 7
... ascertaining the contents of most minerals . The requisite blowpipe utensils for the mere detection of the principal components of ores are so few , can so easily be com- manded , and may be so readily carried about one's person , that ...
... ascertaining the contents of most minerals . The requisite blowpipe utensils for the mere detection of the principal components of ores are so few , can so easily be com- manded , and may be so readily carried about one's person , that ...
Page 13
... ascertaining the amount of one or of several ingredients of a chemical compound , such as an ore or alloy , but is ... ascertain all the different composing elements of an inorganic com- pound , and also the exact amount of each , and ...
... ascertaining the amount of one or of several ingredients of a chemical compound , such as an ore or alloy , but is ... ascertain all the different composing elements of an inorganic com- pound , and also the exact amount of each , and ...
Page 47
... ascertain the moment when this occurs . The coolers are then carefully removed , the aperture closed , and the most intense heat possible kept up for a few moments . To do this well is , I may say , the chef d'œuvre of an assayer , and ...
... ascertain the moment when this occurs . The coolers are then carefully removed , the aperture closed , and the most intense heat possible kept up for a few moments . To do this well is , I may say , the chef d'œuvre of an assayer , and ...
Page 49
... ascertain the exact amount of silver in this button , should it be deemed necessary , though , I must add , that such precision can only be required at mints , if the investigations are not con- ducted for science ' sake , in which case ...
... ascertain the exact amount of silver in this button , should it be deemed necessary , though , I must add , that such precision can only be required at mints , if the investigations are not con- ducted for science ' sake , in which case ...
Page 54
... ascertain the real amount of silver in the button produced in the last assay , which , as already observed , contains a very minute amount of spurious metals in an alloyed state . It was proposed by Gay - Lussac , and from the ...
... ascertain the real amount of silver in the button produced in the last assay , which , as already observed , contains a very minute amount of spurious metals in an alloyed state . It was proposed by Gay - Lussac , and from the ...
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Common terms and phrases
A. A. FESQUET added alloy American amount of silver antimony Appendix aqua regia Architect ascertain assay assayer black flux Boilers borax BRANNT brick button BYRNE Calculating carats carbon charcoal Chemical Chemist and Engineer Chemistry chloride Civil Engineer clay cloth Coal Coins Colors Complete Practical Comprising Construction Containing copper Cotton crucible cupels Distillation Dyeing edition employed Fabrication Formulæ Franklin Institute French gineer Hand-Book heat HENRY CAREY Hessian Hessian crucible I2mo Illustrated inch Instructions iron JOSHUA ROSE latter litharge Louis coined Manufacture Mechanical melting mercury metal Metallurgy method Minerals Mining mixed muffle furnace muriatic acid necessary nitric acid numerous oxide per-centage peroxide piece platinum Pound powdered Practical Treatise procured produced Professor pure lead pure silver quantity quartz quicksilver Receipts retort Royal Rules Sheet-Iron slag specific gravity Steam Steam-Engine Steel sulphur sulphuret Tables tains tion tongs Translated various Varnishing weight wet processes WILLIAM wood engravings
Popular passages
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