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 11
... containing an alkali , viz . potash , soda , or am monia . Ammoniacal , containing ammonia or hartshorn . Assays by Heat , or processes by the sole means of fire . Black flux . See Copper Assays . Carats fine , a term used in ...
... containing an alkali , viz . potash , soda , or am monia . Ammoniacal , containing ammonia or hartshorn . Assays by Heat , or processes by the sole means of fire . Black flux . See Copper Assays . Carats fine , a term used in ...
Page 12
... containing the greatest amount of oxygen . Phosphates , combinations of phosphoric acid with metals earths , ( earthy , ) & c . Precipitation , the production of insoluble compositions , & c . in wet processes . Protoxide , containing ...
... containing the greatest amount of oxygen . Phosphates , combinations of phosphoric acid with metals earths , ( earthy , ) & c . Precipitation , the production of insoluble compositions , & c . in wet processes . Protoxide , containing ...
Page 19
... containing the muffle , and the part below that , the grate , ashes box , & c . & c . In fig . 1 we see imme- diately below the chimney a representation of bricks , ( firebricks , for all in immediate contact with the heat should be of ...
... containing the muffle , and the part below that , the grate , ashes box , & c . & c . In fig . 1 we see imme- diately below the chimney a representation of bricks , ( firebricks , for all in immediate contact with the heat should be of ...
Page 29
... containing weights of platinum down to one - tenth of a milligramme , o 0.003543402 grs . Troy , for about $ 16 . The same firm can also provide common balances , from Professor Wackenrode's ( of Jena ) description , for $ 4 or $ 5 . It ...
... containing weights of platinum down to one - tenth of a milligramme , o 0.003543402 grs . Troy , for about $ 16 . The same firm can also provide common balances , from Professor Wackenrode's ( of Jena ) description , for $ 4 or $ 5 . It ...
Page 30
... containing as little silica mechanically combined as pos- sible , since its presence prevents the ves- sels from being sufficiently porous to allow the oxidizing metals to enter , which would , as will hereafter be seen , become a great ...
... containing as little silica mechanically combined as pos- sible , since its presence prevents the ves- sels from being sufficiently porous to allow the oxidizing metals to enter , which would , as will hereafter be seen , become a great ...
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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
Page 26 - ... Problems ; also, Practical and Simple Rules for Describing the various Patterns required in the different branches of the above Trades. By REUBEN H. WARN, Practical Tin-Plate Worker. To which is added an Appendix, containing Instructions for Boiler- Making, Mensuration of Surfaces and Solids, Rules for Calculating the Weights of different Figures of Iron and Steel, Tables of the Weights of Iron, Steel, etc.
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Page 2 - Marble Worker's Manual: Containing Practical Information respecting Marbles in general, their Cutting, Working and Polishing ; Veneering of Marble ; Mosaics ; Composition and Use of Artificial Marble, Stuccos, Cements, Receipts, Secrets, etc., etc. Translated from the French by ML BOOTH. With an Appendix concerning American Marbles. I2mo., cloth $1.50 BOOTH and MORFIT.— The Encyclopaedia of Chemistry, Practical and Theoretical : Embracing its application to the Arts, Metallurgy, Mineralogy...
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Page 1 - Long-Span Railway Bridges, comprising Investigations of the Comparative Theoretical and Practical Advantages of the various adopted or proposed Type Systems of Construction, with numerous Formulae and Tables giving the weight of Iron or Steel required in Bridges from 300 feet to the limiting Spans ; to which are added similar Investigations and Tables relating to Short-span Railway Bridges.