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GEOFFROY, ETIENNE FRANCOIS (1672-1731)

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Originally appearing in Volume V11, Page 618 of the 1911 Encyclopedia Britannica.
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GEOFFROY, See also:ETIENNE See also:FRANCOIS (1672-1731) , See also:French chemist, See also:born in See also:Paris on the 13th of See also:February 1672, was first an See also:apothecary and then practised See also:medicine. After studying at See also:Montpellier he accompanied See also:Marshal Tallard on his See also:embassy to See also:London in 1698 and thence travelled to See also:Holland and See also:Italy. Returning to Paris he became See also:professor of See also:chemistry at the Jardin du Roi and of See also:pharmacy and medicine at the See also:College de See also:France, and See also:dean of the See also:faculty of medicine. He died in Paris on the 6th of See also:January 1731. His name is best known in connexion with his tables of See also:affinities (tables See also:des See also:rap ports) , which he presented to the French See also:Academy in 1718 and 1720. These were lists, prepared by collating observations on the actions of substances one upon another, showing the varying degrees of See also:affinity exhibited by analogous bodies for different reagents, and they retained their See also:vogue for the See also:rest of the See also:century, until displaced by the profounder conceptions introduced by C. L. Berthollet. Another of his papers dealt with the delusions of the philosopher's See also:stone, but nevertheless he believed that See also:iron could be artificially formed in the See also:combustion of See also:vegetable See also:matter. His Tractatus de materia medica, published posthumously in 1741, was See also:long celebrated. His See also:brother See also:CLAUDE See also:JOSEPH, known as Geoffroy the younger (1685-1752), was also an apothecary and chemist who, having a considerable knowledge of See also:botany, devoted himself especially to the study of the essential See also:oils in See also:plants.

End of Article: GEOFFROY, ETIENNE FRANCOIS (1672-1731)

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