Vocation : Science : Biology

Henri Huchard (4 April 1844 – 1 December 1910) was a French neurologist and cardiologist born in Auxon, Aube.
He studied medicine at the University of Paris, later being appointed médecin des hôpitaux. During his career he was associated with the Bichat and Necker hospitals in Paris. Huchard was a member of the Académie de Médecine.
Huchard specialized in the study of cardiovascular disease, and is remembered for his research of arteriosclerosis. His name is lent to "Huchard's disease" (continued arterial hypertension), and to "Huchard's sign", which is an indication of hypertension, and defined as a pulse rate that does not decrease when changing from a standing to a supine position.Huchard married Berthe Gilbert with whom he had two sons.

Auguste Houzeau (French: [ogyst uzo]; 3 March 1829, Elbeuf – 17 February 1911, Rouen) was a French agronomist and chemist.
He studied at the Conservatoire national des arts et métiers in Paris, where he took chemistry classes from Jean-Baptiste Boussingault. He later served as a professor at the École préparatoire à l'enseignement supérieur des sciences et des lettres in Rouen, and in 1883 was appointed director of the Station agronomique de la Seine-Inférieure. He was also president of the Société centrale d'agriculture de la Seine-Maritime.He is remembered for his investigations on the nature of ozone and its diffusion into the atmosphere; as well as for various studies of fertilizers and for his research involving apple pomace. He was the recipient of several awards during his career, such as:

(1862): The Médaille de vermeil from the Société industrielle d'Elbeuf.
(1870): Chevalier of the Légion d'honneur, being promoted to officer in 1895.
(1872): The Médaille d'or of the Sociétés savantes à la Sorbonne.
(1872): Platinum medal from the Société d'encouragement of Paris.
(1877): The Prix Jecker for his work associated with ozone.
The Ordre du Lion et du Soleil of Persia.

Lucien Leon Hauman-Merck (8 July 1880, in Ixelles – 16 September 1965, in Brussels) was a Belgian botanist, who studied and collected plants in South America and Africa.
He received his education in Gembloux, and afterwards relocated to Argentina, where he obtained a position in the department of agronomy and veterinary medicine at the University of Buenos Aires. From 1904 to 1925 he taught classes in botany, plant pathology and agricultural microbiology at the university. In 1910 he laid the foundations for its botanical garden.In Argentina he conducted important phytogeographical research, and he also performed plant collection duties that involved excursions to Paraguay, Chile and Uruguay. In 1927 he returned to Europe, where from 1928 to 1949, he served as a professor of botany at the Free University of Brussels. During this time period, he studied African flora, about which, he collected numerous plants in the Belgian Congo. In 1949 he returned to Argentina as an honorary professor at the University of Buenos Aires. The "Jardín Botánico Lucien Hauman" at the university is named in his honor.The genera Haumania (J.Léonard, 1949) and Haumaniastrum (P.A.Duvign. et Plancke, 1959) commemorate his name, as do species with the epithet of haumanii.

Carl (or Karl) Otto Harz (28 November 1842 in Gammertingen – 5 December 1906 in Munich) was a German mycologist, pharmacist and botanist.
After spending time as an intern in several pharmacies, he studied botany at the University of Berlin. Later, he relocated to Munich, where he served as a lecturer at the Technische Universität München (from 1873) and at the Tierärztlichen Hochschule (from 1874). In 1880 he was appointed professor of botany and pharmacognosy at the Tierärztlichen Hochschule.In 1877, with pathologist Otto Bollinger, he conducted early studies of actinomycosis in cattle, and is credited for naming the causal agent Actinomyces bovis. From his observations, he believed the culprit to be a mould, related to the genera Botrytis or Monosporium.As a taxonomist, he circumscribed a number of varieties from the species Cucurbita pepo. His name is associated with the following mycological genera:

Harzia (family Ceratostomataceae), named by Julien Noël Costantin (1888).
Harziella (family Chaetomiaceae), named by Otto Kuntze (1891).

Dr. Édouard Marie Heckel (March 24, 1843 – January 20, 1916) was a French botanist and medical doctor, and director of the Jardin botanique E.M. Heckel in Marseille.
Heckel was born in Toulon, studied pharmacy and medicine, and in 1861 visited the Caribbean and Australia. In 1875, he was appointed professor in the faculty of sciences at Marseille, and in 1877 professor of medicine. He became a professor of natural history in Nancy in 1878, and is known for his studies of tropical plants and their use as medicinal plants and oilseeds.
From 1885, Heckel turned to the study of tropical plants such as medicinal or industrial oilseeds. In 1893 he founded the Colonial Institute and Museum of Marseille and creates a tropical pathology professorship at the medical school.
In 1887, he won the Prix Barbier from the French Academy of Sciences.In 1896, French botanist Jean Baptiste Louis Pierre named a genus of flowering plants (belonging to the family Meliaceae) from western central Tropical Africa, Heckeldora in his honour.In 1901, he launched the idea of creating an exhibition devoted exclusively to French colonies. This project would be supported by Jules Charles-Roux, who would become the Commissioner General while Heckel was his deputy. The exhibition was held at Parc Chanot in Marseille and was a great success from its opening on April 14, 1906 to its closure Nov. 18, 1906.

Adolphe-Marie Gubler (5 April 1821 – 20 April 1879) was a French physician and pharmacologist born in Metz.
Originally a student of botany, he began his medical studies in 1841 at Paris, where he was a pupil of Armand Trousseau (1801–1867). In 1845 he became an interne des hôpitaux, earning his doctorate in 1849. Afterwards he worked as a physician at the Hôpital Beaujon, and in 1853 earned his agrégation with a thesis on cirrhosis of the liver. In 1868 he was appointed professor of therapy to the medical faculty in Paris, maintaining this position until his death in 1879.
Gubler made a number of contributions in the fields of medicine and pharmacology. He is credited with being the first physician to differentiate between hematogenous and hepatogenous icterus. His name is associated with "Millard–Gubler syndrome", a condition characterized by softening of brain tissue that is caused by blockage of blood vessels of the pons. The disease is named in conjunction with Auguste Louis Jules Millard (1830–1915), who initially described the disorder in 1855. The eponymous "Gubler's line" is a line of superficial origin of the trigeminal nerve on the pons, a lesion below which results in the aforementioned Millard–Gubler syndrome.
He was the author of many works on botany, clinical medicine, physiology and pharmacology, with several articles on the latter subject being published in the "Journal de thérapeutique". Among his better written efforts was an 1856 treatise on hemiplegia titled De l'hémiplégie alterne envisagée comme signe de lésion de la protubérance annulaire et comme preuve de la décussation des nerfs faciaux, and a major publication involving pharmacopoeia called Commentaires thérapeutiques du codex medicamentarius, a book that was awarded the "Chaussier Prize" (Prix Chaussier, named after anatomist François Chaussier) by the Académie des sciences.Gubler was a founding member of the Société de biologie, and in 1865 became a member of the Académie de médecine.
While still an interne, he was asked by Dr. Trousseau to serve as a traveling companion to a young man suffering from emotional distress. While in Milan, Gubler was seriously wounded by a gunshot from his companion, forcing him to spend a year recuperating in Milan.

Nestor Louis François Gréhant (2 April 1838 in Laon – 26 March 1910) was a French physiologist.
In 1864 he received his medical doctorate in Paris, where he later earned a doctorate in natural sciences (1870). He served as a préparateur to Claude Bernard at the faculty of sciences in Paris, and subsequently became director of the laboratory of general physiology at the École pratique des Hautes Études. In Paris, he also served as a professor of physiology at the Muséum d’Histoire Naturelle. In 1905 he became a member of the Académie de médecine.He is best remembered for his studies of blood and blood circulation (measurement of cardiac output in animals) and respiration. He also made contributions in his research of the nervous system, of muscle activity, toxicology, anaesthesia and experimental hygiene. He developed a number of devices that he used in research, including a grisoumètre (firedamp detector) that was still in use in coal mines up until 1950.

Alfred Grandidier (20 December 1836 – 13 September 1921) was a French naturalist and explorer.
From a very wealthy family, at the age of 20, he and his brother, Ernest Grandidier (1833–1912), undertook a voyage around the world. At first they were led by the astronomer and physicist Pierre Jules César Janssen (1824–1907), but when Janssen fell sick and had to return to France after about six months, the brothers continued the journey.
They visited South America in 1858 and 1859 and in particular the Andes, Peru, Chile, Bolivia, Argentina and Brazil. During this voyage they gathered a significant collection of specimens which were analyzed, in 1860, by Ernest.
The two brothers parted ways after this. Ernest Grandidier went to China and collected a vast number of specimens which are now in the Louvre and the Guimet museum. Alfred travelled to India, reaching it in 1863. He had intended to explore the high plateau of Tibet, but was prevented by a severe attack of fever.
Grandidier travelled to Zanzibar to recuperate, remaining some time and making important collections and publishing an account of his findings. He then visited the island of Réunion and in 1865 made his first visit to Madagascar. He became devoted to the study of the island, revisiting in 1866 and 1868. He finally returned permanently to France in 1870. During his explorations he crossed the island three times, travelling 3000 kilometers in the interior and 2500 along the coast. He made observations which resulted in the production of a map of the island used in future expeditions.

After returning to France he began to work on his great work, L'Histoire physique, naturelle et politique de Madagascar. This work was undertaken in cooperation with others such as Alphonse Milne-Edwards and Leon Vaillant. This work ran to 40 volumes, the final volumes published posthumously by his son Guillaume Grandidier. He described about 50 new species of reptiles and amphibians.Alfred Grandidier's work drew the attention of the French government to Madagascar, which it would annex at the end of 1890.
He was elected to the French Academy of Sciences in 1885 and was the president of the French Geographical Society from 1901 to 1905. The Royal Geographical Society awarded him their Founder's Medal in 1906.

Guido Grandi (3 March 1886 Vigevano, – 10 December 1970, Bologna) was an Italian entomologist.
In 1928 he founded the Institute of Entomology at the University of Bologna (l'Istituto di Entomologia dell'Università di Bologna).

Edgar Goldschmid (born 14 December 1881 in Frankfurt, died 26 May 1957 in Lausanne) was a German physician, pathologist and historian of medicine.