Dumas, Jean Baptiste André, a distinguished French chemist, born at Alais; was admitted to the Académie française at the age of 25; at the Revolution of 1848 he became a member of the National Assembly; was created a senator under the Empire, but retired into private life after Sedan; he was distinguished for his studies in chemistry, both theoretical and practical, and ranks among the foremost in the science (1800‒1884).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Dumas, Alexandre, the Younger * Du Maurier