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 6
... methods to rectify the former , or where no others exist ; as , for instance , is the case with platinum . For the coins , I have selected those em- ployed at mints , and which are therefore generally considered the most serviceable for ...
... methods to rectify the former , or where no others exist ; as , for instance , is the case with platinum . For the coins , I have selected those em- ployed at mints , and which are therefore generally considered the most serviceable for ...
Page 7
... method even for quantitatively 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 ...
... method even for quantitatively 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 ...
Page 10
... Method ................................. .. 85 ..... XIV . Assay of Copper Ores by the English Method ...... . .................. . 92 XV . Assay of Lead Ores by Heat 97 XVI . by a Wet Process .... 100 .
... Method ................................. .. 85 ..... XIV . Assay of Copper Ores by the English Method ...... . .................. . 92 XV . Assay of Lead Ores by Heat 97 XVI . by a Wet Process .... 100 .
Page 13
... methods of ascertaining the amount of one or of several ingredients of a chemical compound , such as an ore or alloy , but is solely intended for practical purposes . For this reason one of its main objects is to be able to attain to a ...
... methods of ascertaining the amount of one or of several ingredients of a chemical compound , such as an ore or alloy , but is solely intended for practical purposes . For this reason one of its main objects is to be able to attain to a ...
Page 39
... methods , the ore must previously be reduced to the finest possible powder , for which purpose , where many assays are made , a large iron bowl is used as a mortar , the pestle having a wooden handle attached at right angles to the iron ...
... methods , the ore must previously be reduced to the finest possible powder , for which purpose , where many assays are made , a large iron bowl is used as a mortar , the pestle having a wooden handle attached at right angles to the iron ...
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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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