1806 in science

	1797; 1798; 1799; 1800; 1801; 1802; ; 1803; 1804; 1805; 1806; 1807; 1808; 1809; ; 1810; 1811; 1812; 1813; 1814; 1815;
	Art; Archaeology; Architecture; Literature; Music; Philosophy;

The year 1806 in science and technology involved some significant events, listed below.

Biology

Publication begins in London of the Flora Graeca collected by John Sibthorp.^[1]^[2]
Pierre André Latreille begins publication in France of Genera crustaceorum et insectorum, secundum ordinem naturalem ut familias disposita.

November 20 – Humphry Davy presents the results of his researches in the electrolysis of water to the Royal Society of London.
Louis Nicolas Vauquelin and Pierre Jean Robiquet isolate asparagine in crystalline form from asparagus juice in France, the first amino acid identified.

August – English seal hunter Abraham Bristow discovers the Auckland Islands.^[3]^[4]

Jean-Robert Argand introduces the Argand diagram.^[5]
Adrien-Marie Legendre gives the first published application of the method of least squares, in a supplement to his Nouvelles méthodes pour la détermination des orbites des comètes.^[5]^[6]

John Bell concludes publication of The Principles of Surgery in two volumes (1801–06). Its treatment of arterial surgery in particular ranks him as a founder of vascular surgery.^[7] His brother Charles Bell publishes Essays on The Anatomy of Expression in Painting.

c. January?? – Mungo Park, Scottish explorer of West Africa (born 1771)
April 5 – Benjamin Bell, Scottish surgeon (born 1749)
June 23 – Mathurin Jacques Brisson, French zoologist (born 1723)
August 3 – Michel Adanson, French botanist (born 1727)
August 23 – Charles-Augustin de Coulomb, French physicist (born 1736)
October 9 – Benjamin Banneker, African-American astronomer and surveyor (born 1731)

^ Harris, Stephen (2007). The Magnificent Flora Graeca: How the Mediterranean Came to the English Garden. Oxford: Bodleian Library. ISBN 978-1-85124-306-8.
^ Lack, H. Walter; Mabberley, David (1998). The Flora Graeca Story: Sibthorp, Bauer, and Hawkins in the Levant. Oxford University Press. ISBN 0-19-854897-4.
^ Mawar, Granville (1999). Ahab's Trade: The Saga of South Seas Whaling. New York: St. Martin's Press. ISBN 0-312-22809-0.
^ Jones, A. G. E. (1970). "Captain Abraham Bristow and the Auckland Islands" (PDF). Notes and Queries. 17 (10): 369–371. doi:10.1093/nq/17-10-369. Retrieved 2011-12-14.
^ ^a ^b Crilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus. ISBN 978-1-84724-008-8.
^ Itard, Jean (2008). "Legendre, Adrien-Marie". Complete Dictionary of Scientific Biography. New York. Retrieved 2012-01-23.
^ Baston, K. Grudzien (2004). "Bell, John (1763–1820)". Oxford Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/2013. Retrieved 2011-04-06. (subscription or UK public library membership required)
^ Penguin Pocket On This Day. Penguin Reference Library. 2006. ISBN 0-14-102715-0.
^ "Copley Medal | British scientific award". Encyclopedia Britannica. Retrieved 21 July 2020.