First edn, 2 vols, London for Baldwin, Cradock & Joy, 1825. Tall 8vo, xxiv, 478p; viii, 532p. Tables. Original 1/4 cloth, paper boards & paper labels (slight wear), very neat repair to top of spine & inner hinges of vol 1. Small inscr, minor wear to edges of boards, a VG clean set, in a modern marbled slipcase. An important attempt to classify the atomic weights of the elements & the composition of salts by a strong supporter of John Dalton. Scarce.