Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 442
ead duration is 5 hou'S. oxide is partly removed in a liquid Melting the Metal. — The impure state and partly absorbed by the hearth, metal left after the distillation of the the silver remaining unchanged. The mercury is melted down, commonly in English 'cupel" or hearth (Fig. 167) crucibles made… … by 2i ft., crossed by 5 iron bars h 3| in. lead obtained by the Pattinson desilver- izing method, as described under Lead, wide, and tilled with bone-ash c moist' p. 1154. The chief object is generally ened with water containing a little potash carbonate; this bone-ash filling the recovery of the…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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