HATCHETT, Charles (1765-1847)

Expériences et observations sur les différens alliages de l'or , leur pesanteur spécifique, et leurs propriétés comparées par rapport au frai comme monnaie ... traduites de l'Anglais par F.-C. Lerat, Contôleur du Monnayage de la Monnaie de Paris

Paris: chez Bernard ... An XII, 1804.
4to: [A]4 B--Y4 [chi]1, 89 leaves, pp. viii [9]--176 [2].Errata on pp. 174--6, publisher's advertisements on last leaf. Woodcut diagram on p. 109. Plates: 1 folding engraved plate 'Gravé par Adam' bound at the end. Leaf size and condition: 250 x 193mm. Some insignificant foxing but a very good clean copy. Binding: Contemporary green morocco, roll-tooled borders, flat gilt spine lettered direct, pink paste-paper endleaves, pink silk marker. Slightly rubbed. Provenance and annotation: Armorial bookplate of the Duc de Gaëte (1756--1841) engraved by Coquardon fils. References: Cole 610.
First edition in French and first edition in book form, a translation of 'Experiments and Observations on the Various Alloys, on the Specific Gravity, and on the Comparative Wear of Gold. Being the Substance of a Report Made to the Right Honourable the Lords of the Committee of Privy Council, Appointed to take into consideration the state of the coins of this Kingdom, and the present establishment and constitution of His Majesty's Mint', Philosophical Transactions 93 (1803) 43--194. The translation is by F. C. Lerat with notes by Louis Bernard Guyton de Morveau.
§ Hatchett, with Henry Cavendish, was asked by the government in 1798 to study the wear suffered by gold coins to determine whether the loss was due to the quality of the gold or the minting of the coins. After conducting a number of experiments together, Hatchett wrote the report which concluded that the composition was not at fault. The report was read at the Royal Society on 13 January 1803 and printed in the Philosophical Transactions. The French edition has notes by the great French chemist Guyton de Morveau who had always taken a keen interest in metallurgy. He was appointed administrator of the mints by Napoleon in 1799. A fine copy with an important provenance, having belonged to Martin-Michel-Charles Gaudin, Duc de Gaëte, Minister of Finances under the Consulate and governor of the Bank of France. OCLC locates copies at the Musée d'Histoire Naturelle in Paris; Munich; Leeds and Wellcome; Harvard, Cornell and Wisconsin.

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