Vocation : Science : Biology

Michel Victor Pachon (May 26, 1867 – 1938) was a French physiologist born in Clermont-Ferrand.
In 1892 he earned his doctorate at the University of Paris, and later became a chief assistant in Paris to physiologists Charles Richet (1850-1935) and Eugène Gley (1857–1930). In 1911 he became a professor of physiology at the medical faculty of the University of Bordeaux. Today, this institution is named "Faculte de médecine Victor Pachon" in his honor.

Pachon is remembered for his work involving blood pressure and oscillometry; which is defined as the measurement of oscillations used in cardiovascular and respiratory physiology. In 1909 Pachon developed a sphygmographic oscillometer for measuring arterial blood pressure. Pachon's oscillometer was widely used by doctors and technicians during the first half of the twentieth century.

Johannes Orth (14 January 1847 – 13 January 1923 in Berlin) was a German pathologist born in Wallmerod.
He studied medicine at the universities of Heidelberg, Würzburg and Bonn, receiving his habilitation in 1872 while an assistant to Eduard von Rindfleisch at Bonn. Afterwards, he served as an assistant under Rudolf Virchow (1821-1902) in Berlin. In 1878 he became a professor at the University of Göttingen, and in 1902, following the death of Virchow, he returned to Berlin as director of the clinic of pathology.
Orth specialized in the pathological study of infectious diseases, particularly tuberculosis and endocarditis.
In 1875, he documented an account involving an autopsy of a jaundiced infant with intense yellow staining of the basal ganglia, hippocampus, the third ventricle, as well as parts of the cerebellum. However, it wouldn't be until the early 20th century that this condition would be further comprehended. In 1903, pathologist Christian Georg Schmorl (1861-1932) presented the results of 120 autopsies of jaundiced infants, with six of the cases having the staining phenomena described by Orth. Schmorl coined the term "kernicterus" (jaundice of the basal ganglia) for the yellow staining phenomenon.

Siegfried Oberndorfer (24 June 1876 in Munich – 1944 in Istanbul) was a Jewish-German physician, pathologist, and cancer researcher.

Pierre Nolf (Ypres, 26 July 1873 – Brussels, 14 September 1953) was a Belgian scientist and politician.
In 1940, he was nominated for the Nobel Prize for Physiology or Medicine, but the prize was not granted that year. In 1940 he received the Francqui Prize for Biological and Medical Sciences.

Adelchi Negri (16 July 1876 – 19 February 1912) was an Italian pathologist and microbiologist born in Perugia.
He studied medicine and surgery at the University of Pavia, where he was a pupil of Camillo Golgi (1843–1926). After graduation in 1900, he became an assistant to Golgi at his pathological institute. In 1909 Negri became a professor of bacteriology, and the first official instructor of bacteriology in Pavia. On 19 February 1912 he died of tuberculosis at age 35.
Negri performed extensive research in the fields of histology, hematology, cytology, protozoology and hygiene. In 1903 he discovered the eponymous Negri bodies, defined as cytoplasmatic inclusion bodies located in the Purkinje cells of the cerebellum in cases of rabies in animals and humans. He documented his findings in an article titled Contributo allo studio dell'eziologia della rabbia, published in the journal Bollettino della Società medico-chirurgica. At the time, Negri mistakenly described the pathological agent of rabies as a parasitic protozoa. A few months later, Paul Remlinger (1871–1964) at the Constantinople Imperial Bacteriology Institute correctly demonstrated that the aetiological agent of rabies was not a protozoan, but a filterable virus.
Negri went on, however, to demonstrate in 1906 that the smallpox vaccine, then known as "vaccine virus", or "variola vaccinae", was also a filterable virus. During the latter part of his career, he became interested in malaria and was at the forefront in efforts to eradicate it from Lombardy. In 1906 he married his colleague Lina Luzzani and six years later, at the age of thirty-five, died of tuberculosis.

Charles Victor Naudin (14 August 1815 in Autun – 19 March 1899 in Antibes) was a French naturalist and botanist.

Eduard Müller (4 January 1876, in Annweiler am Trifels – 30 December 1928, in Marburg) was a German internist and neurologist.
He studied medicine at several German universities, receiving his doctorate from the University of Erlangen in 1898. Following graduation, he spent two years as an assistant at the psychiatric clinic in Freiburg under Hermann Emminghaus and Alfred Hoche, then afterwards worked as an assistant to Carl Weigert at the Senckenberg Institute of Pathology in Frankfurt am Main.In 1903 he became an assistant in Adolph Strümpell's clinic, initially at Erlangen, and then in Breslau. In 1909 he relocated to the University of Marburg as an associate professor and director of the medical polyclinic. In 1921 he attained a full professorship.With bacteriologist Georg Jochmann, he developed the "Müller-Jochmann test", a method of differentiating between tuberculous and non-tuberculous pus.

Ernest Mosny (4 January 1861 – 25 April 1918) was a French physician and hygienist born in La Fère, Aisne.Mosny served as médecin des hopitaux in Paris, and was a member of the Académie de Médecine and the Conseil supérieur d'hygiène.
He is remembered for his work in the field of microbiology. With Joaquín Albarrán (1860–1912) he performed a series of tests in an attempt to find an antidote to the colon bacillus. Eventually the two scientists developed a vaccine that achieved a high degree of immunity in dogs and rabbits. In 1912 with biologist Edouard Dujardin-Beaumetz (1868–1947), he studied the effects of bubonic plague in two Alpine marmots during hibernation. Reportedly, the marmots were able to survive 61 and 115 days after being injected with the disease.In 1911 Mosny reported the first successful embolectomy, a direct arterial surgical procedure that was performed on the femoral artery.

Charles François Antoine Morren (3 March 1807 in Ghent – 17 December 1858 in Liège), was a Belgian botanist and horticulturist, and Director of the Jardin botanique de l’Université de Liège.Morren taught physics at Ghent University between 1831 and 1835. At the same time he studied medicine and graduated in 1835. He became Professor extraordinarius of botany at the University of Liège from 1835 to 1837, and full professor from 1837 to 1854.
Pollination of Vanilla orchids is required to make the plants produce the pods from which vanilla extract is obtained. In 1837, Morren was among the first to publish a method for artificial pollination of Vanilla, but his method proved financially unworkable and was not deployed commercially. In 1841, Edmond Albius, a 12-year-old slave who lived on the French island of Réunion in the Indian Ocean, discovered that the plant could be hand-pollinated. Hand-pollination allowed global cultivation of the plant. Noted French botanist and plant collector Jean Michel Claude Richard falsely claimed to have discovered the technique three or four years earlier, but by the end of the 20th century, Albius was considered the true discoverer.
He was the father of Charles Jacques Édouard Morren. Morren and his son produced the journal La Belgique Horticole (35 volumes, 1851–1885).
Morren also coined the term phenology, which refers to the scientific discipline that studies the seasonal cycles of animals and plants. Morren first used the term phenology in 1849 during a public lecture at the Academy of Brussels. The first use of the term phenology in a scientific paper dates back to 1853 when Morren published “Souvenirs phénologiques de l’hiver 1852-1853” (“Phenological memories of the winter 1852-1853”). This paper describes an exceptionally warm winter when plants exhibited unusually phenological patterns.

This botanist is denoted by the author abbreviation C.Morren when citing a botanical name.