Richard Thoma (medic)

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Richard Thoma

Richard Andreas Thoma (born December 11, 1847 in Bonndorf in the Black Forest , † November 26, 1923 in Heidelberg ) was a German pathologist .

family

His parents were the lawyer Andreas Thoma (* 1811) and Maria Friedericke Alwine Siegel (* 1815).

education and profession

After graduating from high school in Heidelberg, he began studying medicine in Berlin and Heidelberg in 1866. In 1869 he became a member of the Corps Suevia Heidelberg . He completed his studies in 1872 with the state examination and worked as an assistant at the Pathological Institute in Heidelberg, where he qualified as a professor in 1873 and was appointed associate professor for pathological anatomy in 1877 . Thoma took in 1884 a call to the Chair at the University of Dorpat ( Tartu on). With growing Russian influence in Dorpat, he gave up his ordinariate in 1894 and worked, financially independent, as a private scholar in Magdeburg. In 1906 Thoma returned to Heidelberg, where he spent his old age as a private scholar.

power

His habilitation thesis (blood and lymph movement) was the start of decades of research into the biophysical properties of blood flow (hemodynamics) and tissue, focusing on physical-mathematical (“histomechanical”) principles. Thoma summarized his research results in studies of the histogenesis and histomechanics of the blood vessel system (1893). He differentiates between primary vascular growth and vascular growth through sprouting, the formation of new capillaries from pre-existing capillaries.

His scientifically conducted dispute with Wilhelm Roux regarding the functional adaptation of the tissues (“battle of the parts”), which, following the style of publication at the time, sometimes assumed an emotional character, should also be emphasized .

In addition to various microscopic techniques, Thoma invented a method with which the specific weight of the blood could be determined (picnometer). Thoma designed a special apparatus for vital microscopy that enabled investigations into the physiology and pathology of the terminal blood flow path. In the 1870s, Thoma developed a device for producing wafer-thin histological paraffin sections for microscopic examination. In 1881 he presented an apparatus for counting red and white blood cells in defined blood volumes. In 1897 he described an automated process for tissue embedding.

Memberships

Works

  • About the cement substance of the epithelia (physiological part) . Arch. Pathol. Anat. 64 (1875), pp. 394-422
  • Investigations into the size and weight of the anatomical components of the human body in a healthy and sick state , Leipzig, 1884
  • Sliding microtomes (imbedding methods) . J. Royal Microscop. Soc. 3 (1883), p. 289
  • On the problem of inflammation , Dorpat, 1886
  • Improvement in Thoma's sliding microtome . J. Royal Microscop. Soc. 6 (1890), p. 811
  • Studies of the histogenesis and histomechanics of the vascular system , Stuttgart, 1893
  • Textbook of general pathological anatomy , Stuttgart, 1894
  • The experimental-mathematical treatment of the blood circulation . In: Abderhalden's Handbook of Biological Working Methods, Dept. 5, 1927
  • Adaptation theory, histomechanics and histochemistry. Reply to W. Roux's further corrections. Virchow's archive f. pathol. Anat. Vol. 210. Hft. 1.

literature

  • Paul Ernst: Richard Thoma. German. Arch. Klin. Med. 145 (1924), pp. I-IV
  • Otto Lubarsch : Memorial sheet for Richard Thoma. Virchow's Arch. 250 (1924), p. 1
  • Friedrich Walter: Richard Thoma. In: Hugo Freund, Alexander Berg (ed.): History of microscopy. Frankfurt / Main 1964, pp. 389-396
  • Armin Danco: The Yellow Book of the Corps Suevia zu Heidelberg, 3rd edition (members 1810–1985), Heidelberg 1985, No. 625
  • Klaus Sander, Franz Kremp: Thoma. In: Bernd Ottnad (Hrsg.): Badische Biographien Neue Zusammenarbeit, Vol. 3, 1990, pp. 272-273
  • Wilhelm Doerr : About little noticed pioneering deeds of a pathologist at the turn of the century. Memories of Richard Thoma. Doctor and Hospital 11 (1992), pp. 405-411
  • Dietrich von Engelhardt (Ed.): Biographische Enzyklopädie deutschsprachiger Mediziner, Vol. 2, 2002, S. 627
  • Pagel: Biographical lexicon of outstanding doctors of the nineteenth century . Berlin, Vienna 1901, Sp. 1706. ( Permalink )
  • Eberhard J. Wormer :  Thoma, Richard A .. In: New German Biography (NDB). Volume 26, Duncker & Humblot, Berlin 2016, ISBN 978-3-428-11207-5 , p. 168 f. ( Digitized version ).

Web links

Commons : Richard Thoma  - collection of images, videos and audio files

Individual evidence

  1. ^ Kösener corps lists 1910, 121 , 673
  2. ↑ Richard Thoma: The migration of colorless blood cells from the blood to the lymphatic system, Habil. Heidelberg, 1873
  3. ↑ Richard Thoma: About a microtome. Virchow's Arch. 84 (1881), pp. 189-191
  4. ^ Richard Thoma, JF Lyon: About the method of counting blood cells. Arch. Pathol. Anat., 84 (1881), pp. 131-154
  5. ↑ Richard Thoma: An apparatus for the rapid fixation and hardening of tissue parts. Magazine Knowledge Microscope. 14 (1897), p. 333
personal data
SURNAME Thoma, Richard
ALTERNATIVE NAMES Thoma, Richard Andreas
BRIEF DESCRIPTION German doctor and professor of pathology
DATE OF BIRTH December 11, 1847
PLACE OF BIRTH Bonndorf in the Black Forest
DATE OF DEATH November 26, 1923
Place of death Heidelberg