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Events on Monday 6 February 1804 1
1733 – 1804Joseph Priestley (1733-1804)Died 6 February 1804, aged 70Joseph Priestley was an English chemist and clergyman credited with discovering oxygen and several other gases, and a prolific writer on theology and politics. He emigrated to the United States in 1794 after his support for the French Revolution made him a target of mob violence in England.