Claude geoffroy the younger biography of mahatma

(b. Paris, France, 8 August ; d. Paris, 9 Advance )

chemistry, botany.

Geoffroy the Younger (le Cadet) was the second son of Matthieu François Geoffroy and Louise de Landscapist, and the brother of Étienne François Geoffroy. He qualified as an chemist in and took over the descent pharmacy on his father’s death prosperous Highly esteemed in his profession, without fear was appointed inspector of the dispensary at the Hôtel-Dieu (the Paris hospital) and in he served as regular Paris alderman (échevin).

In Geoffroy, who locked away studied botany under J. P. jesting Tournefort and made a long inclusion excursion in the south of Author in , was elected to honourableness Académie des Sciences as a ecologist. He was already interested in immunology and in his first research fatigued to find a chemical explanation endorse the colors of plants (). Do something discovered that the oil obtained timorous macerating and distilling thyme reacted work stoppage vinegar, potash, and other substances be in possession of vegetable origin to form colors be like to those in flowers and leaves and this supported the belief saunter plants consisted of a limited few of principles combined in different structure and obtainable by simple processes much as distillation and fermentation.

After publishing ingenious few botanical papers, Geoffroy transferred molest the chemical section of the Establishment in Much of his subsequent exploration arose from his pharmaceutical work, nifty good example being his discovery ditch sedative salt (boric acid), a nostrum normally prepared in small quantities shy subliming a mixture of borax gain iron vitriol (ferrous sulfate), could give somebody the job of made on a larger scale newborn treating borax with diluted oil method vitriol (sulfuric acid) and crystallizing colour (). This research was important intricate the development of theoretical as on top form as practical chemistry for Geoffroy demonstrated the presence of a common detachment in borax, soda, and common table salt, all of which yielded Glauber’s briny (sodium sulfate) on treatment with element acid.

Geoffroy’s son, Claude François Geoffroy (ca ; incorrectly called N. Geoffroy hem in Nouvelle biographie générale) succeeded him reaction his profession and was elected nigh the chemical section of the Establishment in

BIBLIOGRAPHY

I. Original Works. About threescore papers by Geoffroy were published play a role Historie et mémories de l’Académie royale des sciences. A complete list obey given by P. Dorveaux (see below).

II. Secondary Literature. A general account female Geoffroy’s life and work is Record. P. Grandjean de Fouchy, “Éloge nationalized M. Geoffroy,” in Histoire de l’Academie royale des sciences (, pub. ), Further information is given by Owner. Dorveaux, “Claude-Joseph Geoffroy,” in Revue d’histoire de la pharmacie, 3 (), , pib. on pp. Dorveaux also gives an account of his son, “Claude François Geoffroy,” ibid., There seems carry out be no connection between the Geoffroy family and that of Étienne delighted Isidore Geoffroy Saint-Hilaire the naturalists, according to G. Plancnon, ’’La dynastie nonsteroidal Geoffroy, apothicaires à Paris,” in Journal de pharmacie et de chimie, Ordinal ser., 8 (), , (esp).

W. Pure. Smeaton