the First Opium War ended
August 29 Nanjing Treaty
John Herschel invented the cyanotype.
See See also Category: Born 1842
January 1 - Language Vasyl Semenovych, Ukrainian writer, poet, playwright († June 1, 1891).
February 1 - Ukrainian painter and teacher Volodymyr Orlovsky was born in Kyiv († February 19, 1914 in Italy).
February 24 - Julian Romanchuk, a public and political figure in Galicia, was born.
February 26 - Camille Flammarion, French astronomer, writer, founder of the French Astronomical Society (1887).
March 22 - Mykola Lysenko, Ukrainian composer and folklorist, was born.
August 14 - Jean Gaston Darboux, French mathematician.
See see also Category: Died 1842