Adolf Hansen

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Karl Adolf Hansen , also Carl Adolph, (born May 10, 1851 in Altona , † June 24, 1920 in Gießen ) was a German botanist .

Life

Hansen was the son of a businessman, attended grammar school in Altona and from the age of 17 completed an apprenticeship as a pharmacist in Lübeck with the state pharmaceutical examination in Bonn in 1875. From 1874 he studied natural sciences (especially botany and chemistry) at the University of Bonn and was there PhD in chemistry in 1877 (dissertation: on compounds of chloral with oxyacid ). From 1877 Hansen was assistant to August von Kekulé in Bonn and then to the botanist Johannes von Hanstein . He then spent a year in Basel with Hermann Vöchting and assistant to Maximilian Ferdinand Franz Rees (1872–1901) at the Botanical Institute in Erlangen and from 1881 assistant for botany with Julius Sachs at the University of Würzburg . He completed his habilitation in 1888 at the TH Darmstadt , where he was then a private lecturer. From 1891 he was a full professor of botany at the University of Giessen and later head of the Botanical Garden and Botanical Institute there. In 1901/02 he was rector in Gießen and in 1907 he became a privy councilor. In 1909 he was elected a member of the Leopoldina .

Hansen dealt with plant physiology, especially chemical physiology of plants, and medicinal plants. He was involved in some scientific controversies: with Houston Stewart Chamberlain about his book on Goethe's Metamorphosis of Plants (he defends Goethe against what he saw as the disparaging treatment by Chamberlain) and with the Danish botanist Eugenius Warming about the way in which dune plants spread ( after Hansen over salt, after Warming Wind).

In 1911/12 he traveled to the tropics and also traveled as a botanist to Greece, Spain and North Africa and was at the zoological station in Naples.

Fonts

  • History of assimilation and chlorophyll function, Leipzig: Engelmann 1882
  • The Nutrition of Plants, Knowledge of the Present 38, Leipzig and Prague, Freytag & Tempsky, 1885. * Systematic characteristics of the medicinally important plant families, together with details of the origin of the more important medicinal substances in the plant kingdom, Würzburg: Stahel 1889
  • The colorants of chlorophyll, Darmstadt 1889
  • Drug science. A guide and revision course for study and practice, Bonn 1897
  • The Vegetation of the East Frisian Islands: A Contribution to Plant Geography, Particularly Knowledge of the Effect of Wind on the Plant World, Darmstadt, 1901.
  • Goethe's Metamorphosis of Plants. History of a botanical hypothesis. 2 parts. Giessen: Alfred Töpelmann 1907
  • The plant, Göschen Collection, Berlin 1914
  • Goethe's Morphology (Metamorphosis of Plants and Osteology) A contribution to the objective and philosophical understanding and to the criticism of morphological concept formation, Giessen: Alfred Töpelmann, 1919

literature

  • Ernst Küster, obituary in Reports of the German Botanical Society, Volume 38, 1920, pp. 66–77
  • Armin Geus : The controversy between the botanist Karl Adolph Hansen (1851-1920) and Houston Stewart Chamberlain (1855-1927) about Goethe's doctrine of metamorphosis. In: Medizinhistorisches Journal, Volume 28, 1993, pp. 165-172.

Web links

Individual evidence

  1. ^ Calliope , dates of life
  2. ↑ Before 1906
  3. ↑ Member entry of Adolph Hansen at the German Academy of Natural Scientists Leopoldina , accessed on March 2, 2016.
personal data
SURNAME Hansen, Adolf
ALTERNATIVE NAMES Hansen, Karl Adolf; Hansen, Carl Adolph
BRIEF DESCRIPTION German botanist
DATE OF BIRTH May 10, 1851
PLACE OF BIRTH Altona district
DATE OF DEATH June 24, 1920
Place of death to water