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 AlloysH. C. Baird, 1852 - 117 σελίδες |
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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
Δημοφιλή αποσπάσματα
Σελίδα 11 - Visits to Remarkable Places : Old Halls, Battle-Fields, and Scenes illustrative of Striking Passages in English History and Poetry. By WILLIAM HOWITT. 2 vols. square crown 8vo. with Wood Engravings, 25s. The Rural Life of England.
Σελίδα 2 - Encyclopaedia of Chemistry, Practical and Theoretical : Embracing its application to the Arts, Metallurgy, Mineralogy, Geology, Medicine and Pharmacy. By JAMES C. BOOTH, Melter and Refiner in the United States Mint, Professor of Applied Chemistry in the Franklin Institute, etc., assisted by CAMPBELL MORFIT, author of " Chemical Manipulations,
Σελίδα 5 - LESLIE. — Complete Cookery: Directions for Cookery in its Various Branches. By Miss LESLIE. Sixtieth thousand.
Σελίδα 105 - Troy Weight. 24 grains (gr.) — 1 pennyweight (dwt). 20 pennyweights — 1 ounce (oz.) 12 ounces — 1 pound (Ib.).
Σελίδα 4 - ELECTROTYPE MANIPULATION: Being the Theory and Plain Instructions in the Art of Working in Metals, by Precipitating them from their Solutions, through the agency of Galvanic or Voltaic Electricity.