Nicolas-Théodore de Saussure was a Swiss chemist and student of plant physiology who made seminal advances in phytochemistry. He is one of the major pioneers in the study of photosynthesis.
Dieudonné Sylvain Guy Tancrède de Gratet de Dolomieu usually known as Déodat de Dolomieu was a French geologist. The mineral and the rock dolomite and the largest summital crater on the Piton de la Fo
Déodat Gratet de Dolomieu (drawing by M. Cordier, engraved by Ambroise Tardieu)
The Dolomites, a mountain range in the Italian Alps, were named after de Dolomieu, who first described the dolomite mineral found there.