Johann, or Jean-Frederic, Hermann, or Herrmann, (31 December 1738 in Barr, Alsace – 4 October 1800 in Strasbourg) was a French physician and naturalist.
In 1769 he was appointed professor of medicine at the School of Public Health of Strasbourg, then, in 1778, professor of philosophy, before going on, in 1784, to succeed Jacob Reinbold Spielmann as chair of chemistry, natural history and materia medica. In 1794 he became professor of botany and materia medica in the new School of Medicine.
He was the author of Tabula affinitatum animalium (1783) and Observationes zoologicae quibus novae complures, published posthumously in 1804.
His collections and library of 18,000 volumes formed the basis of the Natural History Museum of Strasbourg, where a reconstruction of his natural history cabinet was opened in 1988.
Hermann was also in charge of Strasbourg's botanical garden, where he was responsible for a large increase in the number of living plant species.
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