Vocation : Education : Researcher

Joseph Henri Ferdinand Douvillé (16 June 1846 – 19 January 1937), also known as Henri Douvillé, was French paleontologist, geologist and malacologist. Douvillé worked as a mining engineer in Bourges (1872) and Limoges (1874), afterwards serving as professeur suppléant of paleontology at the École des Mines. From 1881 to 1911 he was a professor of paleontology at the École des Mines.

Gustav Doetsch (29 November 1892 – 9 June 1977) was a German mathematician, aviation researcher, decorated war veteran, and Nazi supporter.

Stéphane Marcel Delépine (19 September 1871, in Saint-Martin-le-Gaillard – 21 September 1965) was a French pharmacist and chemist, whose name is associated with the Delépine reaction for the preparation of primary amines.
He studied at the Sorbonne and at the École Supérieure de Pharmacie in Paris, receiving his doctorate in 1898 with the thesis Amines et amides dérivés des aldéhydes ("The amines and amide derivatives of aldehydes"). From 1895 to 1902 he served as préparateur at the Collège de France, where he worked in the laboratory of Marcellin Berthelot. In 1902 he was named chief pharmacist to the hospitals of Paris, a position he maintained up until 1927.From 1904 he was an agrégé at the École Supérieure de Pharmacie, attaining the chair of hydrology and hygiene in 1913. In 1930 he was appointed a professor of organic chemistry at the Collège de France.In 1927 he became a scientific advisor for Etablissements Poulenc, and subsequently was named director of pharmaceutical research for Rhône-Poulenc. In 1930 he became a member of the Académie des sciences.His work involved research in the fields of organic, inorganic and general chemistry. He made contributions in his investigations of terpenes, platinum group metals (iridium, rhodium), sulfur compounds, et al. In 1935 he described a general method for catalytic hydrogenation with Raney nickel. Also, when experimenting with thiocarbonic esters and related bodies, he discovered the phenomena of "oxyluminescence". In addition, he is credited for introducing a new process for preparation of pure tungsten.

Ernest Saint-Charles Cosson (22 July 1819 – 31 December 1889) was a French botanist born in Paris.
Cosson is known for his botanical research in North Africa, and during his career he participated in eight trips to Algeria. In several of these he was accompanied by Henri-René Le Tourneux de la Perraudière (1831–1861), whom he honoured in the naming of several species and genera (e.g., Perralderia, Galium perralderii). In 1863 he was elected president of the Société botanique de France, and from 1873 to 1889, he was a member of the Académie des sciences.In 1882 Jules Ferry, as Minister of Public Instruction, decided to create a mission to explore the Regency of Tunisia.
The expedition was headed by Cosson and included the botanist Napoléon Doumet-Adanson and other naturalists.
In 1884 a geological section under Georges Rolland was added to the Tunisian Scientific Exploration Mission.
Rolland was assisted by Philippe Thomas from 1885 and by Georges Le Mesle in 1887.With Jacques Nicolas Ernest Germain de Saint-Pierre (1815–1882), Cosson published the influential Atlas de la Flore des Environs de Paris.Botanical specimens collected by Cosson are held in many herbaria around the world, including the National Museum of Natural History, France, Harvard University Herbaria, the herbarium at the Royal Botanic Gardens, Kew, the National Herbarium of Victoria at the Royal Botanic Gardens Victoria, Copenhagen University Botanical Museum, the New York Botanical Garden, and the Komarov Botanical Institute, among others.

Jean-Baptiste "Auguste" Chauveau ForMemRS (23 November 1827 – 4 January 1917) was a French professor and veterinarian.

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

Alexandre Joseph Émile Brumpt (10 March 1877, in Paris – 8 July 1951) was a French parasitologist.He studied zoology and parasitology in Paris, obtaining his degree in science in 1901, and his medical doctorate in 1906. In 1919 he succeeded Raphaël Blanchard (1857-1919) as professor of parasitology to the Faculté de Médecine de Paris, a position he maintained until 1948. Much of his career was spent performing research in Africa and Latin America.
Brumpt is credited for introducing a technique known as xenodiagnosis into parasitological research. In 1935, he described Plasmodium gallinaceum, an avian malarial parasite that infects chickens and other fowl. He also conducted important research involving the African tsetse fly (Glossina palpalis) as a biological vector for trypanosomiasis. In addition, he did extensive studies of the diseases: schistosomiasis, Chagas disease, onchocerciasis and leishmaniasis.
He described Blastocystis hominis and Entamoeba dispar. The latter species helped to explain why most people who appeared to be infected with Entamoeba histolytica were asymptomatic. However, because there are no morphological differences between the two species, his proposal was largely ignored for over 50 years before being proven correct using molecular techniques.The French Academy of Sciences awarded him the Prix Savigny for 1910. A number of parasitic species bear his name, including Plasmodium brumpti and Xenocoeloma brumpti. Also, a genus of phlebotomine sand flies, Brumptomyia, and a species of Corsican mosquito, Culex brumpti, are named after him.
Brumpt's best known written work is Précis de Parasitologie, which was published in six editions between 1910 and 1949. He was the author of many scientific papers, including several on the Anopheles mosquito and its relationship to malaria. He was the President of the Société zoologique de France in 1922. With Maurice Neveu-Lemaire and Maurice Langeron, he founded in 1923 the parasitological journal Annales de Parasitologie Humaine et Comparée, now continued as Parasite.