Cholera Riots break out in Hamburg resulting in the deaths of a sanitary officer and a policeman. The riots are eventually quashed by bayonet-wielding troops.
20 June – Zentis, a confectionery and preserve concern, begins trading in Aachen.
1 September – Franz Ramesohl and Franz Schmidt open a milk separator-producing workshop under the name of Ramesohl & Schmidt oHG in Oelde. The workshop forms the basis of the still extant company GEA Westfalia Separator.
^Tim Kirk, Cassell's Dictionary of Modern German History, London, 2002, p. 228
^Fries, Jana Esther; Gutsmiedl-Schümann, Doris (2013). Ausgräberinnen, Forscherinnen, Pionierinnen: Ausgewählte Porträts früher Archäologinnen im Kontext ihrer Zeit (in German). Waxmann Verlag. pp. 217–219 and 222. ISBN 978-3-8309-7872-5.