Vocation : Science : Biology

Gaspard Adolphe Chatin (30 November 1813, Tullins – 13 January 1901) was a French physician, mycologist and botanist who was born in Tullins Isère, and died in Les Essarts-le-Roi. He was the first to prove that goiter was related to iodine deficiency.
He studied at the Faculté de Médecine in Paris and received his doctorate in May 1840. In 1841, he became Chief Pharmacist at the Beaujon Hospital in Paris, and in 1859 at the Hôtel-Dieu de Paris. He taught botany at the Ecole Superieure de Pharmacie, which he directed from 1874. In April 1886, there were student riots at the school, and his dismissal was demanded. He retired in August 1886 with the title of honorary director.
He was a member of the Académie Nationale de Médecine (1853) and the Académie des Sciences (1874). He was a member of the Société Botanique de France, which he led in 1862, 1878, 1886 and 1896. In 1878, he became an Officer of the Legion d'honneur.
He was the father of the botanist and zoologist Joannes Charles Melchior Chatin (1847–1912).

Félicien Chapuis (29 April 1824 – 30 September 1879) was a Belgian doctor and entomologist. He specialised in Coleoptera and finished the text of Genera des coléoptères by Théodore Lacordaire (1801—1870) when Lacordaire died.
He wrote:

1865 Monographie des platypides. H. Dessain, Liège.
1874. Histoire Naturelle des Insectes. Genera des Coléoptères. Tome 10. Libraire Encyclopédique de Roret, Paris, 455 pp., pls. 111–124. (Phytophages)
1875. Histoire Naturelle des Insectes. Genera des Coléoptères. Tome 11. Libraire Encyclopédique de Roret, Paris, 420 pp., pls. 125–130. (Phytophages)
1876. Histoire Naturelle des Insectes. Genera des Coléoptères. Tome 12. Libraire Encyclopédique de Roret, Paris, 424 pp., pls. 131–134. (Érotyliens. Endomychides, Coccinellides).

Giorgio Celli (16 July 1935 – 11 June 2011) was an Italian entomologist, ecologist, professor, writer, and politician.

Maurice Jules Gaston Corneille Caullery (5 September 1868, Bergues – 13 July 1958, Paris) was a French biologist.

Jean Baptiste Carnoy (11 January 1836 – 6 September 1899), born in Rumillies (Belgium), was a Roman Catholic priest and a scientist in the field of cytology. He made the initial explanation of the real nature of the albuminoid membrane, and conducted noted experiments on cellular segmentation.

Léopold Nègre (15 June 1879 – 29 July 1961) was a French physician and biologist born in Montpellier.
He studied natural sciences at the University of Montpellier, followed by courses in microbiology at the Pasteur Institute in Paris. From 1907 to 1910, he served as préparateur at the laboratory of microbiology courses headed by Amédée Borrel (1867–1936). In 1910, he obtained his doctorate of medicine. Following an internship at the Pasteur Institute in Lille, he was appointed laboratory chief (microbial analysis) at the Pasteur Institute in Algiers. In 1918 he received his doctorate of natural sciences.
In 1919, he was assigned to the laboratory of tuberculosis headed by Albert Calmette (1863–1933) at the Pasteur Institute in Paris. Here he took part in research of Bacillus Calmette-Guérin (BCG vaccine). With microbiologist Alfred Boquet (1879–1947) he developed antigene méthylique (methyl antigen) for treatment of tuberculosis.In 1931, Nègre became chair at the Institut Pasteur, and in 1944 was named vice president of the Société de biologie. He was also president of the Société française de la tuberculose (1950) and a member of the Académie de Médecine (hygiene section, from 1951).

Aaron Novick (June 24, 1919 – December 21, 2000) is considered one of the founders of molecular biology. He started the University of Oregon's Institute of Molecular Biology, believed to be the first of its kind in the world, in 1959.
A graduate of the University of Chicago, he completed his doctorate in physical organic chemistry there in 1943, and then joined the Manhattan Project's Metallurgical Laboratory. He later worked at its Los Alamos Laboratory, and witnessed the Trinity nuclear test in July 1945.

Louis Édouard Bureau (25 May 1830 in Nantes – 14 December 1918 in Paris) was a French physician and botanist.
Édouard Bureau began his medical studies in Nantes in 1848, where he held the post of director of the Muséum de Nantes (Nantes Museum). He completed his medical degree in Paris in 1852. In 1872 he obtained a post as a naturalist assistant at the Muséum national d'histoire naturelle (French National Museum of Natural History) in the laboratory of Adolphe Brongniart, where he replaced Edmond Tulasne. In 1874 he received appointment to the new botany post dealing with classification. Beginning in 1875, he was a director of the herbaria at the museum. He was a professor at the museum from 1874 until he retired in 1905. Adrien Franchet was his assistant in the 80's. He was succeeded by Paul Henri Lecomte.
Bureau was one of the founders of the Société botanique de France (French Botanical Society) and was the chairman in 1875, 1883, 1902 and 1905. In 1895 he was elected to the French Academy of Medicine. From 1895 to 1917, he was a member of the Comité travaux of the historiques et scientifiques (French Committee for Historical and Scientific Endeavors).
Bureau was a significant contributor to Baillon’s Dictionnaire de Botanique (Botanical Dictionary). He wrote the chapters on the Moraceae, including the Artocarpeae (the breadfruit tribe), for volume XVII (1873) of Candolle’s Prodromus systematis naturalis regni vegetabilis (A preliminary natural system for the plant kingdom). Together with Karl Moritz Schumann, he wrote the Bignoniaceae section of Volume VIII of Carl Friedrich Philipp von Martius’s Flora brasiliensis (Flora of Brazil).
Bureau was particularly interested in paleobotany and significantly increased the museum's paleontological holdings. From 1910–1914 he published a two-volume work on the fossils of the Loire basin, and in 1911, he published a further work specifically on the Devonian there.The species Rhododendron bureavii, belonging to the taxonomically complex group of elepidote (nonscaly) rhododendrons, was named in his honor and was based upon specimens from China in his private collection.