DUMAS, J. (JEAN BAPTISTE ANDRÉ). - FORESHADOWING THE PERIODIC TABLE.

Mémoire sur les Équivalents des Corps simples. Lu à l'Academie des Sciences le 9 novembre 1857 et le 27 decembre 1858.

Paris, Victor Masson, 1859. No wrappers as extracted from "Annales de Chimie et de Physique", Tome 55, Troisieme Série. Titlepage to tome 55, pp. 129-210 a. 1 folded engraved plate. Clean and fine.

First printing of Dumas's importent lecture on the chemical equivalents of the elements in which he attempts to prove that all elements is multiples of the hydrogen atom, Prout's thesis.

"He also published two papers (the present) in which he tried to develop the view that for the classifications of the elements it was possible to discover 'generating' relations similar to thosee defining the series of organic compounds. The elements could be divided into 'natural families'. The atomic weights of all the members of the same family were linked by a simple arithmetic relationship; they increased by multiples of sixteen."(DSB IV, p.247). - Neville p. 397.

Order-nr.: 43466