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Events on Tuesday 21 May 1935 2
1848 – 1935Hugo de Vries (1848-1935)Died 21 May 1935, aged 87De Vries was a Dutch botanist who was one of the rediscoverers of Mendel's laws of heredity. He introduced the term mutation.
1860 – 1935Jane Addams (1860-1935)Died 21 May 1935, aged 74Addams was an American social reformer who founded Hull House in Chicago. In 1931 she became the first American woman to win the Nobel Peace Prize.