Experiments and Observations on the various Alloys, on the specific Gravity, and on the comparative Wear of Gold. Being the Substace of a Report made to the Right Honourable the Lords of the Committee of Privy Counsel, appointed to take into the consi.

(London, W. Bulmer and Co., 1803). 4to. No wrappers as extracted from "Philosophical Transactions" 1803 - Part I. Pp. 43-194 a. 1 large folded engraved plate, showing Cavendish's apparatus for measuring wear. Clean and fine. First printing of Hatchett's report to the Committee appointed by the Privy Councel "to take into consideration the state of the coins of this Country."Towards the end of the 18th century concern was expressed that the economy of the realm was suffering great losses through wear og gold coinage. The Committee appointed Hatchett and Cavendish to "examine by such experiments as should de deemed requisite, whether any of these defects really existed.".