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 |
From inside the book
Results 1-5 of 22
Page 11
... red vapours . Galena , a lead ore . Hygroscopic water , the moisture bodies attract from the atmosphere . Muffle . See Utensils , & c . 11 Oil - baths , heated oil , to warm solutions Explanation of Technical and Scientific Terms.
... red vapours . Galena , a lead ore . Hygroscopic water , the moisture bodies attract from the atmosphere . Muffle . See Utensils , & c . 11 Oil - baths , heated oil , to warm solutions Explanation of Technical and Scientific Terms.
Page 17
... muffle furnace suffices , and it is the only one used for gold , silver , and copper ores ; but for iron , lead , & c . we require another , though much simpler one . I shall first describe the muffle furnace , ( Plate I. figs . 1 , 2 ...
... muffle furnace suffices , and it is the only one used for gold , silver , and copper ores ; but for iron , lead , & c . we require another , though much simpler one . I shall first describe the muffle furnace , ( Plate I. figs . 1 , 2 ...
Page 18
... muffle , which again should depend on the quantity of assays expected to be performed at once . The back and the mouth of the muffle are equal in size . The muffle furnace is exhibited from in front in fig . 1 , in a lateral section in ...
... muffle , which again should depend on the quantity of assays expected to be performed at once . The back and the mouth of the muffle are equal in size . The muffle furnace is exhibited from in front in fig . 1 , in a lateral section in ...
Page 19
... 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 this kind ; 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 this kind ; the ...
Page 20
... muffle is in use . a is the opening of the muffle , which can be closed by a piece of fire - proof brick repre- sented in fig . 4 , having an iron piece pro- truding on the exterior , with a narrow opening , into which fits the handle ...
... muffle is in use . a is the opening of the muffle , which can be closed by a piece of fire - proof brick repre- sented in fig . 4 , having an iron piece pro- truding on the exterior , with a narrow opening , into which fits the handle ...
Other editions - View all
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.
Page 20 - RIFFAULT, VERGNAUD, and TOUSSAINT.— A Practical Treatise on the Manufacture of Colors for Painting : Comprising the Origin, Definition, and Classification of Colors; the Treatment of the Raw Materials ; the best Formulae and the Newest Processes for the Preparation of every description of Pigment, and the Necessary Apparatus and Directions for its Use ; Dryers ; the Testing, Application, and Qualities of Paints, etc., etc.
Page 10 - FAIRBAIRN.— The Principles of Mechanism and Machinery of Transmission • Comprising the Principles of Mechanism, Wheels, and Pulleys, Strength and Proportions of Shafts, Coupling of Shafts, and Engaging and Disengaging Gear. By SIR WILLIAM FAIRBAIRN, Bart CE Beautifully illustrated by over 150 wood-cuts.
Page 17 - FORMULAE for finding the Discharge of Water from Orifices, Notches, Weirs, Pipes, and Rivers. With New Formulae, Tables, and General Information on Rain-fall, Catchment-Basins, Drainage, Sewerage, Water Supply for Towns and Mill Power. By JOHN NEVILLE, Civil Engineer, MRIA Third Edition, carefully revised, with considerable Additions.
Page 6 - TRAMWAYS: THEIR CONSTRUCTION AND WORKING. Embracing a Comprehensive History of the System ; with an exhaustive Analysis of the Various Modes of Traction, including Horse Power, Steam, Cable Traction, Electric Traction, &c.
Page 21 - ROSE.— The Complete Practical Machinist : Embracing Lathe Work, Vise Work, Drills and Drilling, Taps and Dies, Hardening and Tempering, the Making and Use of Tools, Tool Grinding, Marking out Work, etc.
Page 14 - LANDRIN.— A Treatise on Steel: Comprising its Theory, Metallurgy, Properties, Practical Working, and Use. By MHC LANDRIN, Jr., Civil Engineer. Translated from the French, with Notes, by AA FESQUET, Chemist and Engineer. With an Appendix on the Bessemer and the Martin Processes for Manufacturing Steel, from the Report of A bram S.
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...
Page 25 - Artificial Manures : Their Chemical Selection and Scientific Application to Agriculture. A series of Lectures given at the Experimental Farm at Vincennes, during 1867 and 1874-75. By M. GEORGES VILLE. Translated and Edited by WILLIAM CROOKES, FRS Illustrated by thirty-one engravings. 8vo., 450 pages ...... $6.00 VILLE.
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.