Botanist Robert Brown discovers the cell nucleas in plants. Men begin to wear stiff collars. Womens skirts become shorter. Large hats are the fashion. Belguim is separated from the Netherlands.
Cholera sweeps through Russia and central Europe to Scotland.
London Bridge opens. Charles Darwin sets sail as naturalist aboard H. M. S. Beagle, for South America, New Zealand and Australia. Chloroform is invented by Samuel Guthrie in America and Justus von Liebig in Germany, simultaneously. The song is one of several national anthems used before 1931. Slaves revolt in Virginia led by Nat Turner.