Editing 1842 (section)

=== Date unknown ===
* The [[French Polynesia|Polynesia]]n islands of [[Tahiti]] and [[Tahuata]] are declared a [[protectorate]] of [[France]].
* The [[New Zealand]] seat of government moves from [[Russell, New Zealand|Russell]] to [[Auckland]].
* [[Dzogchen Monastery]], in [[Sichuan]], China, is almost completely destroyed by an earthquake.
* English [[Palaeontology|palaeontologist]] [[Richard Owen]] coins the name ''Dinosauria'', hence the [[Anglicization|Anglicized]] ''[[dinosaur]]''.<ref>Owen, R. (1842). "Report on British Fossil Reptiles." Part II. Report of the British Association for the Advancement of Science, Plymouth, England.</ref>
* [[Julius von Mayer]] proposes that [[work (thermodynamics)|work]] and [[heat]] are equivalent.<ref>{{cite journal|last=von Mayer|first=J. R.|year=1842|title=Bemerkungen über die Kräfte der unbelebten Nature ("Remarks on the forces of inorganic nature")|journal=[[Liebigs Annalen|Annalen der Chemie und Pharmacie]]|volume=43|issue=2|pages=233–40|doi=10.1002/jlac.18420420212|hdl=2027/umn.319510020751527|hdl-access=free}}</ref>
* [[Pickelhaube]] helmet introduced in the [[Prussian Army]].<ref>{{cite web|url=http://www.worldwar1.com/sfgph.htm|title=The German Pickelhaube, 1914-1916|archive-url=https://web.archive.org/web/20070501163132/http://www.worldwar1.com/sfgph.htm|date=2007-05-01|archive-date=2007-05-01|access-date=2021-01-13|work=Trenches on the Web}}</ref>
* The [[Sons of Temperance]] is founded in New York City.
* [[Beecham's Pills]] (a [[laxative]]) is first marketed in [[Lancashire]], England, by [[Thomas Beecham (chemist)|Thomas Beecham]], forming the basis of the [[Beecham Group]] and [[GSK plc]] pharmaceutical companies.<ref>{{cite journal|title='Best for Me, Best For You' — a History of Beecham's Pills 1842–1998|journal=[[The Pharmaceutical Journal]]|volume=269|pages=921–924}}</ref>
* Founding of:
** [[Cumberland University]] (in [[Lebanon, Tennessee]]).
** [[Hollins University]] (as Valley Union Seminary in Roanoke, Virginia by Charles Cocke).
** [[Villanova University]] (in [[Villanova, Pennsylvania]] by the [[Augustinians|Augustinian]] order).
** [[Indiana University Maurer School of Law]] at [[Indiana University Bloomington]].