Friedrich Gustav Jakob Henle, German physician, pathologist, and anatomist (d. 1885)
Friedrich Gustav Jakob Henle (German: [ˈhɛnlə]; 9 July 1809 – 13 May 1885) was a German physician, pathologist, and anatomist. He is credited with the discovery of the loop of Henle in the kidney. His essay, "On Miasma and Contagia," was an early argument for the germ theory of disease. He was an important figure in the development of modern medicine.

1800Jul, 9
Friedrich Gustav Jakob Henle
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Events on 1800
- 14May
Washington, D.C.
The process of the U.S. Government moving the United States capital city from Philadelphia to Washington, D.C. begins. - 14Jun
Battle of Marengo
The French Army of First Consul Napoleon Bonaparte defeats the Austrians at the Battle of Marengo in Northern Italy and re-conquers Italy. - 30Aug
Slave rebellion
Gabriel Prosser postpones a planned slave rebellion in Richmond, Virginia, but is arrested before he can make it happen. - 7Oct
Robert Surcouf
French corsair Robert Surcouf, commander of the 18-gun ship La Confiance, captures the British 38-gun Kent inspiring the traditional French song Le Trente-et-un du mois d'août. - 17Nov
6th United States Congress
The United States Congress holds its first session in Washington, D.C.