Inhaltsangabe
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... Silver, troy weights for, 272 Whittell's assay of, 97, 98 Slag, appearauce of, in the as-say of copper, 162 character of the, in assay-ing iron ores, 231-233 formation of a, recom-mended by Percy, 233 in silver assays, 69, 70 refined, 62 Smelters and assayers, Ger-man, adage current among, 73 Smelting products and oxidized lead ores, assays for, 206-209 Soda, bicarbonate of, 59 Sodium-ammonium hydrogen phosphate, 58 carbonate, 59 Solution, decimal salt, table for, 91-93 decinormal silver, table for, 94-96 Solutions, normal, preparation of, 88, 89 Solvent agents, 58-60 Stammingtou clay, analysis of, 270 Storer's assay of lead ores, 217, 218 Stourbridge clay, analysis of, 270 Sulphate of lead, composition of, 214, 215 Sulphates and sulphur, volu-metric determination of, in ores, 261, 262 Sulphides, separation of free gold from, 114, 115 Sulphur, 61 and sulphates, volumetric determination of, in ores, 261, 262 determination of, in py-rites, 263-265 examination of, in metal-lic lead, 262, 263 melting point of, 271 Sulphur, recognition of, in iron, 238, 293 Sulphurets in ores, assay of, 260-265 Sulphuretted gold ores, melt-ing of, 127-130 lead ores with few or no foreign sul-phides, me-thods of as-saying, 186-199 many earthy constituents, methods of assayingfor, 205, 206 many foreign s u 1 p hides, methods of assaying, 199-205 Sulphuric acid, assay of lead ores with, 203-205 Sulphurizing agents, 61 Swedish assay for iron ores, 227-242 of copper, 170-179 Sweepings or drosq fluxes for, 129, 130 of gold, melting of, 125-127 Table for decimal salt solution, 91-93 decinormal silver so-lution, 94-96 of analyses of different clays used for cru-cibles, 270 avoirdupois weights for metals, 272 base coins of the va-rious countries, 148 gold coins of the...
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Reseña del editor
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... Silver, troy weights for, 272 Whittell's assay of, 97, 98 Slag, appearauce of, in the as-say of copper, 162 character of the, in assay-ing iron ores, 231-233 formation of a, recom-mended by Percy, 233 in silver assays, 69, 70 refined, 62 Smelters and assayers, Ger-man, adage current among, 73 Smelting products and oxidized lead ores, assays for, 206-209 Soda, bicarbonate of, 59 Sodium-ammonium hydrogen phosphate, 58 carbonate, 59 Solution, decimal salt, table for, 91-93 decinormal silver, table for, 94-96 Solutions, normal, preparation of, 88, 89 Solvent agents, 58-60 Stammingtou clay, analysis of, 270 Storer's assay of lead ores, 217, 218 Stourbridge clay, analysis of, 270 Sulphate of lead, composition of, 214, 215 Sulphates and sulphur, volu-metric determination of, in ores, 261, 262 Sulphides, separation of free gold from, 114, 115 Sulphur, 61 and sulphates, volumetric determination of, in ores, 261, 262 determination of, in py-rites, 263-265 examination of, in metal-lic lead, 262, 263 melting point of, 271 Sulphur, recognition of, in iron, 238, 293 Sulphurets in ores, assay of, 260-265 Sulphuretted gold ores, melt-ing of, 127-130 lead ores with few or no foreign sul-phides, me-thods of as-saying, 186-199 many earthy constituents, methods of assayingfor, 205, 206 many foreign s u 1 p hides, methods of assaying, 199-205 Sulphuric acid, assay of lead ores with, 203-205 Sulphurizing agents, 61 Swedish assay for iron ores, 227-242 of copper, 170-179 Sweepings or drosq fluxes for, 129, 130 of gold, melting of, 125-127 Table for decimal salt solution, 91-93 decinormal silver so-lution, 94-96 of analyses of different clays used for cru-cibles, 270 avoirdupois weights for metals, 272 base coins of the va-rious countries, 148 gold coins of the...
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