“ Towards the end of his life he adopted the view that the elements have been formed by some process of condensation from one primordial substance of extremely small atomic weight, and he expressed the conviction that atomic weights within narrow limits are variable and modified according to the physical conditions in which a compound is formed. ”

“ In 1853 he went to Paris as préparateur to J. F. Persoz (1805-1868) , professor of chemistry at the Conservatoire des Arts et Métiers. A year later he was entrusted with a course of chemical instruction at Mülhausen, and he remained in that town till 1865 as professor at the École Supérieure des Sciences. He then returned to Paris as assistant to A. V. Balard at the College de France, in 1876 he succeeded that chemist in the chair of chemistry, and in 1882 he became directing professor at the municipal École de Physique et de Chimie. ”

“ During the period he spent at Mülhausen, Schützenberger paid special attention to industrial chemistry, particularly in connexion with colouring matters, but he also worked at general and biological chemistry which subsequently occupied the greater part of his time. ”