GREGORY TOBIAS / CHEMICAL HERITAGE FOUNDATION / SCIENCE PHOTO LIBRARY GREGORY TOBIAS / CHEMICAL HERITAGE FOUNDATION / SCIENCE PHOTO LIBRARY
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Marcellin Pierre Eugene Berthelot (1827-1907), French chemist, using a magnifying glass in his laboratory. Berthelot pioneered organic synthesis. Organic chemistry had been concerned with compounds derived from living nature. From 1854, Berthelot used synthetic methods in a systematic way, and built up large molecules from simple starting components. The former idea of a 'vital force' was banished; organic chemistry became simply the chemistry of carbon compounds. He is also noted for his work on thermochemistry, physiological chemistry and on explosives. This 1927 engraving is by Carol Nonumaye.
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