Editing 1868 in science (section)

==Deaths==
* February 10 – Sir [[David Brewster]], Scottish physicist (born [[1781 in science|1781]])<ref>{{cite book|author=Gordon, Margaret Maria |title=The home life of sir David Brewster|url=https://archive.org/details/bub_gb_sG4BAAAAQAAJ|access-date=18 September 2011|year=1881|publisher=D. Douglas|pages=[https://archive.org/details/bub_gb_sG4BAAAAQAAJ/page/n238 231]–236}}</ref> 
* February 11 – [[Léon Foucault]] (born [[1819 in science|1819]]), French physicist.<ref>{{cite book|author1=John Guy Porter|author2=Patrick Moore|title=Yearbook of Astronomy|url=https://books.google.com/books?id=kbc7AAAAMAAJ|year=1967|publisher=W. W. Norton|page=47}}</ref>
* February 24 – [[John Herapath]] (born [[1790 in science|1790]]), English physicist.
* May 22 – [[Julius Plücker]] (born [[1801 in science|1801]]), German mathematician and physicist.
* June 25 – [[Alexander Mitchell (engineer)|Alexander Mitchell]] (born [[1780 in science|1780]]), Irish engineer and [[inventor]] of the [[screw-pile lighthouse]].
* June 29 – [[John Scott Lillie|Sir John Lillie]], British army officer, entrepreneur and inventor (born [[1790 in science|1790]])
* July 15 – [[William T. G. Morton]] (born [[1819 in science|1819]]), American dentist.
* August 29 – [[Christian Friedrich Schönbein]], German chemist and inventor of the fuel cell (born [[1799 in science|1799]])<ref>{{cite book | last = Partington | first = J. R. | title = History of Chemistry | publisher = Macmillan Education, Limited | location = London | year = 1964 | isbn = 9781349005543 | page=190}}</ref>
* September 26 – [[August Ferdinand Möbius]] (born [[1790 in science|1790]]), German mathematician and astronomer<ref>{{cite book | last = Franceschetti | first = Donald | title = Biographical encyclopedia of mathematicians | publisher = Marshall Cavendish | location = New York | year = 1999 | isbn = 9780761470717 | page=377}}</ref>
* December 25 – [[Linus Yale, Jr.]] (born [[1821 in science|1821]]), American engineer and inventor.<ref>{{cite book | last = Day | first = Lance | title = Biographical dictionary of the history of technology | publisher = Routledge | location = London New York | year = 1996 | isbn = 9781134650194 | page=1345}}</ref>
* December 31 – [[James David Forbes]] (born [[1809 in science|1809]]), Scottish-born physicist, glaciologist and seismologist.