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Births on July 29

Gerhard Armauer Hansen
1841Jul, 29

Gerhard Armauer Hansen

Gerhard Armauer Hansen, Norwegian physician (d. 1912)
Gerhard Henrik Armauer Hansen (29 July 1841 – 12 February 1912) was a Norwegian physician, remembered for his identification of the bacterium Mycobacterium leprae in 1873 as the causative agent of leprosy. His distinguished work was recognized at the International Leprosy Congress held at Bergen in 1909.

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Events on 1841

  • 9Mar

    United States v. The Amistad

    The U.S. Supreme Court rules in the United States v. The Amistad case that captive Africans who had seized control of the ship carrying them had been taken into slavery illegally.
  • 16Aug

    Second Bank of the United States

    U.S. President John Tyler vetoes a bill which called for the re-establishment of the Second Bank of the United States. Enraged Whig Party members riot outside the White House in the most violent demonstration on White House grounds in U.S. history.
  • 24Sep

    Kingdom of Sarawak

    The Sultanate of Brunei cedes Sarawak to the United Kingdom.
  • 13Nov

    Hypnotism

    James Braid first sees a demonstration of animal magnetism, which leads to his study of the subject he eventually calls hypnotism.