Editing 1815 in science (section)

==Chemistry==
* [[William Prout]] anonymously publishes [[Prout's hypothesis|his hypothesis]] that the [[atomic weight]] of every [[Chemical element|element]] is an [[integer]] multiple of that of [[hydrogen]].<ref>{{cite journal|title=On the Relation between the Specific Gravities of Bodies in their Gaseous State and the Weights of their Atoms|url=http://web.lemoyne.edu/~giunta/EA/PROUTann.HTML|journal=[[Annals of Philosophy]]|volume=6|pages=321–330|year=1815|accessdate=2011-04-16}}</ref><ref>{{cite journal|last=Rosenfeld|first=Louis|title=William Prout: early 19th Century Physician-Chemist|journal=[[Clinical Chemistry (journal)|Clinical Chemistry]]|year=2003|volume=49|pages=699–705|url=http://www.clinchem.org/cgi/content/full/49/4/699|doi=10.1373/49.4.699|pmid=12651838|accessdate=2011-04-16|issue=4|doi-access=free|archive-url=https://web.archive.org/web/20110607113509/http://www.clinchem.org/cgi/content/full/49/4/699|archive-date=2011-06-07|url-status=dead}}</ref>
* Dutch chemist [[Coenraad van Houten]] introduces alkaline salts to chocolate to reduce its bitterness.<ref>{{cite web|url=http://archive.fieldmuseum.org/chocolate/history.html|title=History of Chocolate|last=Kerr|first=Justin|year=2007|publisher=[[Field Museum]]|location=Chicago|access-date=2014-03-03}}</ref>