Vocation : Science : Biology

Louis Pierre Gratiolet (French: [ɡʁasjɔlɛ]; 6 July 1815 – 16 February 1865) was a French anatomist and zoologist who was a native of Sainte-Foy-la-Grande, Gironde. He succeeded Isidore Geoffroy Saint-Hilaire (1805-1861) as professor of zoology to the Faculty of Sciences at the University of Paris.
Gratiolet is remembered for his work in neuroanatomy, physiognomy and physical anthropology. He did extensive research in the field of comparative anatomy, and performed important studies regarding the differences and similarities between human and various primate brains. He is also credited for introducing the demarcation of the brain's cortical surface into five lobes, (frontal lobe, temporal lobe, parietal lobe, occipital lobe and insular cortex).
With Paul Broca (1824-1880) he performed correlative studies of aphasia and the frontal lobe. Gratiolet was a vocal critic of Broca regarding the latter's belief that a larger brain equated to higher intelligence.

Alfred Gottschalk (22 April 1894 – 4 October 1973) was a German biochemist who was a leading authority in glycoprotein research. During his career he wrote 216 research papers and reviews, and four

books.Gottschalk was born in Aachen, the third of four children to Benjamin and Rosa Gottschalk, who had Jewish heritage. He was raised Catholic. He choose to study medicine, from 1912 he attended the Universities of Munich, Freiburg im Breisgau and Bonn. During the war he served in the medical corps of the German Army. He completed his medical degree in 1920, graduating MD from the University of Bonn. He completed clinical work experience at the medical schools of Frankfurt am Main and Würzburg and physiology-biochemistry studies at Bonn, that led to his first publications, an award from the University of Madrid and an invitation to work at the Kaiser Wilhelm Institute for Experimental Therapy and Biochemistry with Carl Neuberg.
In 1923 he married Lisbeth Berta Orgler; together they had one son. They separated in 1950. Gottschalk left the Kaiser Wilhelm Institute for Biochemistry in 1926 to become Director of the Biochemical Department at the General Hospital in Stettin. He left the hospital in 1934 following upheaval in Nazi Germany and entered private practice, left for England in the spring of 1939, and on to Melbourne in July. He was offered a position as a biochemist by Charles Kellaway, director of the Walter and Eliza Hall Institute (WEHI). He initially worked with yeast enzymes and fermentation, but in 1947 he joined the virus department, where he worked with Frank Macfarlane Burnet. He also taught biochemistry and organic chemistry at the Melbourne Technical College and later at the University of Melbourne. In 1945 he became a naturalized British citizen. In 1949 he received a DSc from the University of Melbourne.
He was elected a Fellow of the Australian Academy of Science in 1954. He discovered viral neuraminidase there in 1957. As Burnet stated: “In the world of biochemistry the most important contribution of the Walter and Eliza Hall Institute is regarded as Gottschalk’s discovery of the structure of the sialic acids and his recognition that an enzyme which I had characterised biologically was chemically a neuraminidase. Gottschalk’s work was masterly and it was definitive.”On his retirement in 1959, he was invited by his friend and former WEHI colleague Frank Fenner to research at the John Curtin School of Medical Research at the Australian National University. He returned to Germany in 1963, where he was appointed Guest-Professor at the Max Planck Institute for Virus Research in Tübingen. He continued active research and for his contributions to science was elected to the Fellowship of the American Association for the Advancement of Science in 1967 and received an honorary doctorate from the University of Münster (MD) in 1969.
He died in Tübingen on 4 October 1973. The Gottschalk Medal for medical research awarded by the Australian Academy of Science is named in his honour.

Marcel Eugène Émile Gley (French: [glɛ]; 18 January 1857 – 24 October 1930) was a French physiologist and endocrinologist born in Épinal, Vosges.
He studied physiology with Henri-Étienne Beaunis at the medical school in Nancy, and afterwards worked as an assistant to Étienne-Jules Marey (1830–1904) in Paris. Later on, he received the title of professeur agrégé, and in 1908 became a professor at the Collège de France. He was a member of the Académie de Médecine and secretary general of the Société de Biologie. He was a colleague to Charles Richet (1850–1935), and with Richet, published the Journal de physiologie et de pathologie générale. With Belgian pharmacologist Jean-François Heymans, he founded the journal Archives Internationales de Pharmacodynamie et de Thérapie (1895).In 1891 Gley was the first to discover the importance of the parathyroid glands, which are four (or more) small endocrine glands lying close or embedded in the posterior surface of the thyroid gland. These glands had been recently discovered as an anatomical entity in 1880, however their importance was not understood at the time. Gley realized that the cause of tetany after thyroid operations was the inadvertent destruction of the parathyroid glands. He demonstrated this by removing the parathyroid glands from laboratory animals and witnessing their deaths from tetany. Because of his discovery, parathyroid glands have sometimes been referred to as "Gley's glands".
In his studies of the thyroid, he discovered that there was much more iodine in thyroid tissue than in the parathyroid, and noticed that when the thyroid is removed, a disturbance of iodine metabolism occurs.

Karl Theodor Fahr (German pronunciation: [kaʁl ˈteːodoːɐ̯ ˈfaːɐ̯]; 3 October 1877 – 29 October 1945) was a German pathologist born in Pirmasens of the Rhineland-Palatinate.
In 1903 he earned his medical doctorate from the University of Giessen, afterwards continuing his studies with Eugen Bostroem (1850-1926) in Giessen, under Morris Simmonds (1855-1925) in Hamburg and with Ilya Ilyich Metchnikoff (1845-1916) in Paris. In 1924, he became director of the pathological institute at the University Medical Center Hamburg-Eppendorf.
Fahr is remembered for his work in nephrology and research of kidney disorders. With internist Franz Volhard (1872-1950) he published a comprehensive monograph on Bright's disease titled Die Brightsche Nierenkrankheit. In 1923, he provided an early correlation between lung cancer (Bronchialkarzinom) and tobacco smoking. Today his name is associated with Fahr's disease, which is a degenerative neurological disorder characterized by calcifications and cell loss within the basal ganglia. Fahr was however not the first describe the disease and there are suggestions that the eponym be avoided.In 1933 Fahr signed the Vow of allegiance of the Professors of the German Universities and High-Schools to Adolf Hitler and the National Socialistic State. He committed suicide in 1945.

Johannes Fabry (1 June 1860, in Jülich – 29 June 1930, in Dortmund) was a German dermatologist.
He studied medicine at the universities of Bern and Berlin, receiving his doctorate in 1886. Following graduation he trained in dermatology under Joseph Doutrelepont at the University of Bonn and with Hugo Ribbert in Zürich. From 1889 to 1929 he was chief medical officer of the Skin Clinic at the Dortmund municipal hospital, which under his guidance, became a leading center for dermatology.His name is associated with "Fabry disease", a rare, inherited metabolic disease characterized by telangiectatic skin lesions, kidney failure and disorders of the cardiovascular, gastrointestinal, and central nervous systems. In 1898 he described dermatological features of the disease in a 13-year-old boy, naming the condition "purpura haemorrhagica nodularis". The disease is also called "Anderson-Fabry disease", named along with British surgeon William Anderson, who independent of Fabry, reviewed the progression of the disease over nearly 20 years in a 39-year-old patient.

Dr. Rudolph (Rudolf) Emmerich (29 September 1856– 15 November 1914) was a German bacteriologist noted for his advances against cholera and his co-invention of the first antibiotic drug Pyocyanase with Oscar Löw in 1890s.

Emmerich made experiments on himself by injections of cholera strains and proved that cholera is less virulent when contracted from human to human as opposed to from the ground.
Emmerich was professor Hygiene and Bacteriology at the University of Munich.

Auguste Henri André Duméril (30 November 1812 – 12 November 1870) was a French zoologist. His father, André Marie Constant Duméril (1774–1860), was also a zoologist. In 1869 he was elected as a member of the Académie des sciences.
Duméril studied at the University of Paris, and in 1844 became an associate professor of comparative physiology at the university. From 1857, he was a professor of herpetology and ichthyology at the Muséum National d'Histoire Naturelle in Paris.
In 1851, with his father, he published Catalogue méthodique de la collection des Reptiles. With zoologist Marie Firmin Bocourt (1819–1904), he collaborated on a project called Mission scientifique au Mexique et dans l'Amérique Centrale, a publication that was the result of Bocourt's scientific expedition to Mexico and Central America from 1864 to 1866. The section on reptiles is considered to be Dumeril's best written effort in the field of herpetology. Duméril died in 1870 during the siege of Paris, and Mission scientifique au Mexique et dans l'Amérique Centrale was continued by Bocourt, Léon Vaillant (1834–1914) and other scientists.
As part of the Collection des Suites à Buffon, he issued a two-volume ichthyological study titled Histoire naturelle des poissons, ou Ichtyologie générale (1865, 1870), research that complemented the works of Georges Cuvier (1769–1832) and Achille Valenciennes (1794–1865) by describing species not covered by the two famous naturalists. Duméril also conducted significant research involving the axolotl (Ambystoma mexicanum).

Félix Dujardin (5 April 1801 – 8 April 1860) was a French biologist born in Tours. He is remembered for his research on protozoans and other invertebrates.