GERHARDT, CHARLES. - THE CHEMICAL "THEORY OF RESIDUES".

Sur la Constitution des Sels organiques à Acides complexes, et leurs Rapports avec les Sels ammoniacaux.

Paris, Crochard, 1839.

Entire October-issue with original printed yellow wrappers (wrappers loose). In:"Annales de Chimie et de Physique, Par MM. Gay-Lussac et Arago.", tome 72, Series 2. (Entire volume octobre-issue offered). Pp. 113-(222). Gerhardt's paper: pp. 184-214.Clean and fine.


First printing of a classic paper in organic chemistry in which Gerhardt breaks with the conceptions of dualism and pre-existing radicals, and sets forth his "Theory of Residues". The October-issue also contains Gerhards paper "Recherches chimiques sur l'Hellénine", pp. 163-183. (A subject for his doctoral thesis in 1840).

"A new aspect was given to the substitution-type theory by Gerhardt, who explained the formation of organic compounds as due to "pairing" or "copulation" of residues."(Findlay "A Hundred years of Chemistry" p. 30 ff).

Order-nr.: 59127

DKK 2.500,00