Gerhardt, Karl Friedrich, chemist, born at Strasburg; after a training at Carlsruhe and Leipzig, worked in Liebig's laboratory at Giessen; in 1838 he began lecturing in Paris, and made experiments along with Cahours on essential oils, which bore fruit in an important treatise; in 1844 he received the chair of Chemistry at Montpellier, but returned to Paris four years later; there he matured and published his theories of types, homologous series, &c., which have greatly influenced the science of chemistry; in 1855 he became professor of Chemistry in Strasburg (1816‒1856).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gérard, François Pascal Simon, Baron * Gerhardt, Paul