The Assayer's Guide: Or, Practical Directions to Assayers, Miners, and Smelters, for the Tests and Assays, by Heat and by Wet Processes, of the Ores of All the Principal Metals, and of Gold and Silver Coins and Alloys |
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accurate added alloy Alloy containing American amount of silver antimony ascertain Assay of Gold assayer black flux borax Bound in cloth brick button produced calcining calculated carats charcoal chemical Chemistry chloride of silver circum cloth extra colour COMPANION copper cupel dissolving Dobra Doubloon Edition employed Engravings evaporating extract filtered gangue-rock gilt edges gold coins heat Hessian crucible hundred grains inch iron latter litharge loss Louis coined melting metal method mixed morocco super extra muffle furnace muriatic acid necessary nitric acid OLINTHUS GREGORY OLIVER BYRNE oxide Paper covers particles per-centage peroxide piece placed Plate platinum potash Pound powdered practical precipitate procured pure gold pure lead pure silver quantity quicksilver red-heat rees roasting round royal 8vo shape silver and copper slag solution specific gravity sulphur sulphuret tains Testoons tion tongs true amount Turkey morocco super Volume washing weight wet processes WILLIAM HAZLITT
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