COLLECTION ABECASIS / SCIENCE PHOTO LIBRARY COLLECTION ABECASIS / SCIENCE PHOTO LIBRARY
Claude Louis Berthollet (1748-1822), French doctor and chemist. By 1780, Berthollet's work in the new science of chemistry led to his admission to the French Academy of Sciences. He supported the theories of Lavoisier, but correctly disagreed with him by proposing that some acids do not contain oxygen. His book Essai de statique chimique (1803) was the first systematic work on chemical physics. He also worked on a wide range of chemicals, as well as dyes and gunpowder. Berthollet was a friend of Napoleon Bonaparte and was made a count (Comte Berthollet), but in 1814 he helped depose Napoleon as Emperor, 'for the good of France'.
Model release not required. Property release not required.