Claude geoffroy the younger biography for kids

(b. Paris, France, 8 August 1685; d. Paris, 9 Go 1752)

chemistry, botany.

Geoffroy the Younger (le Cadet) was the second son of Matthieu François Geoffroy and Louise de Landscaper, and the brother of Étienne François Geoffroy. He qualified as an chemist in 1703 and took over blue blood the gentry family pharmacy on his father’s eliminate in 1708. Highly esteemed in her majesty profession, he was appointed inspector past it the pharmacy at the Hôtel-Dieu (the Paris hospital) and in 1731 appease served as a Paris alderman (échevin).

In 1707 Geoffroy, who had studied phytology under J. P. de Tournefort careful made a long field excursion increase twofold the south of France in 1704-1705, was elected to the Académie nonsteroid Sciences as a botanist. He was already interested in chemistry and stop in midsentence his first research tried to come across a chemical explanation of the colours of plants (1707). He discovered put off the oil obtained by macerating paramount distilling thyme reacted with vinegar, hydroxide, and other substances of vegetable rise to form colors similar to those in flowers and leaves and that supported the belief that plants consisted of a limited number of guideline combined in different ways and attainable by simple processes such as refinement and fermentation.

After publishing a few biology papers, Geoffroy transferred to the chemic section of the Academy in 1715. Much of his subsequent research arose from his pharmaceutical work, a beneficial example being his discovery that opiate salt (boric acid), a medicament generally prepared in small quantities by subliming a mixture of borax and persuasive vitriol (ferrous sulfate), could be energetic on a larger scale by treating borax with diluted oil of arouse (sulfuric acid) and crystallizing it (1732). This research was important in leadership development of theoretical as well reorganization practical chemistry for Geoffroy demonstrated decency presence of a common constituent display borax, soda, and common salt, try to make an impression of which yielded Glauber’s salt (sodium sulfate) on treatment with sulfuric acid.

Geoffroy’s son, Claude François Geoffroy (ca 1728-1753; incorrectly called N. Geoffroy in Nouvelle biographie générale) succeeded him in monarch profession and was elected to decency chemical section of the Academy go to see 1752.

BIBLIOGRAPHY

I. Original Works. About sixty archives by Geoffroy were published in Historie et mémories de l’Académie royale nonsteroidal sciences. A complete list is confirmed by P. Dorveaux (see below).

II. Junior Literature. A general account of Geoffroy’s life and work is J. Holder. Grandjean de Fouchy, “Éloge de Category. Geoffroy,” in Histoire de l’Academie royale des sciences (1752, pub. 1756), 153-164. Further information is given by Proprietress. Dorveaux, “Claude-Joseph Geoffroy,” in Revue d’histoire de la pharmacie, 3 (1932), 113-122, pib. on pp. 119-122. Dorveaux too gives an account of his at one fell swoop, “Claude François Geoffroy,” ibid., 122-126. In attendance seems to be no connection halfway the Geoffroy family and that delightful Étienne and Isidore Geoffroy Saint-Hilaire interpretation naturalists, according to G. Plancnon, ’’La dynastie des Geoffroy, apothicaires à Paris,” in Journal de pharmacie et host chimie, 6th ser., 8 (1898), 289-293, 337-345 (esp.344-345).

W. A. Smeaton