1805 in science

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List of years in science (table)

Significant events in 1805 in science and technology are listed.


  • Jean Henri Jaume Saint-Hilaire publishes Exposition des Familles naturelles et de la Germination des Plantes, contentant la description de 2337 genres et d'environ 4000 espèces, 112 planches dont les figures ont ete dessinées par l'auteur, popularising the Jussiaean classification system.[1]
  • Marie Jules César Savigny publishes Histoire naturelle et mythologique de l'Ibis in Paris, the first illustrated monograph on the ibis.


  • John Dalton's list of molecular weights is first published.[2]
  • Joseph Louis Gay-Lussac discovers that water is composed of two parts hydrogen and one part oxygen by volume.[3][4]
  • Jane Marcet's elementary textbook for young people, Conversations on Chemistry ("intended more especially for the female sex"), is published anonymously in London. It proves extremely popular on both sides of the Atlantic, running through at least forty editions.[5][6]










  1. ^ Williams, Roger L. (1988). "Gerard and Jaume: Two Neglected Figures in the History of Jussiaean Classification (Part Three)". Taxon. 37: 233–271. JSTOR 1222135. 
  2. ^ Dalton, John (1805). "On the Absorption of Gases by Water and Other Liquids". Memoirs of the Literary and Philosophical Society of Manchester, 2nd ser. 1: 271–87. 
  3. ^ "Joseph Louis Gay-Lussac". Science History Institute. Retrieved 21 March 2018. 
  4. ^ Bowden, Mary Ellen (1997). "Joseph Louis Gay-Lussac". Chemical achievers : the human face of the chemical sciences. Philadelphia, PA: Chemical Heritage Foundation. pp. 13–15,53. ISBN 9780941901123. 
  5. ^ "Jane Marcet". Science History Institute. Retrieved 21 March 2018. 
  6. ^ Morse, Elizabeth J. (2004). "Marcet, Jane Haldimand (1769–1858)". Oxford Dictionary of National Biography (Online ed.). Oxford University Press. doi:10.1093/ref:odnb/18029. Retrieved 2013-10-14.  (subscription or UK public library membership required)
  7. ^ Legendre, Adrien-Marie (1805), Nouvelles méthodes pour la détermination des orbites des comètes [New Methods for the Determination of the Orbits of Comets] (in French), Paris: F. Didot 
  8. ^ Bozzini, P. (1806). "Lichtleiter: eine Erfindung zur Anschauung innerer Theile und Krankheiten nebst der Abbildung". J Practischen Arzneykunde. Berlin. 24: 107–24. 
  9. ^ Bozzini, P. (1810). "Lichtleiter, eine Erfindung zur Anschauung innerer Theile und Krankheiten nebst der Abbildung". Heidelbergische Jahrbücher der Litteratur. 3. Heidelberg: Wöhr & Zimmer. p. 207. Retrieved 2010-09-06. 
  10. ^ Bush, Ronnie Beth; Leonhardt, Hanna; Bush, Irving M.; Landes, Ralph R. (1974). "Dr. Bozzini's Lichtleiter: A translation of his original article (1806)". Urology. 3 (1): 119–23. doi:10.1016/S0090-4295(74)80080-4. PMID 4591409. Retrieved 2011-10-17. 
  11. ^ Rolt, L. T. C. (1958). Thomas Telford. London: Longmans, Green.