John Scott Haldane CH FRS
(1860-1936)

Died aged c. 76

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John Scott Haldane CH FRS (/ˈhɔːldeɪn/; 2 May 1860 – 14/15 March 1936) was a Scottish physiologist famous for intrepid self-experimentation which led to many important discoveries about the human body and the nature of gases. He also experimented on his son, the equally famous J. B. S. Haldane, both for extending his father's interest in diving and as a key figure in population genetics and the development of the modern evolutionary synthesis even when he was quite young. Haldane locked himself in sealed chambers breathing potentially lethal cocktails of gases while recording their effect on his mind and body. Haldane visited the scenes of many mining disasters and investigated their causes. When the Germans used poison gas in World War I Haldane went to the front at the request of British secretary of state, Lord Kitchener and attempted to identify the gases being used. One outcome of this was his invention of the first box respirator.

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Commemorated on 1 plaque

Photo of John Scott Haldane blue plaque
Owen Massey McKnight on Flickr

J. S. Haldane CH FRS 1860-1936 physiologist lived and conducted experiments here 1891-1899

Crick Road, Oxford, United Kingdom where they lived and conducted experiments