GELLERT, Christlieb Ehregott.

Metallurgic Chymistry. Being a System of Mineralogy in General, and of all the Arts arising from this Science. To the great Improvement of Manufactures, and the most capital Branches of Trade and Commerce. Theoretical and practical. In Two Parts.

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Translated from the Original German of C.E. Gellert, by I.S. [John Seiferth]. Five folding engravedplates. 2 p.l., iii, xv, 186, [3], 188-90, 193-416 pp. 8vo, cont. sheep-backed marbled boards (rubbed), uncut. London: T. Becket, 1776. First edition in English. Gellert (1713-95), was chief administrator of the foundries and forges at Freiberg and later became professor of metallurgical chemistry at the famous Freiberg Bergakademie on its foundation in 1765. The present book is a “very popular work on metallurgical chemistry...In this he modified Geoffroy’s affinity table by having a table of 28 columns of symbols in which substances having the least affinity with the substance at the head of a column are put at the top, i.e. the reverse of Geoffroy’s order. Gellert uses letter symbols in the table.”–Partington, II, p. 710. The plates depict metallurgical furnaces and apparatus. Very good copy from the library of the distinguished scientist and collector Franz Sondheimer, with his bookplate. ❧ Cole 516. Duveen, pp. 242-43. Neville, I, pp. 512.

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