John Scott Haldane

British physiologist and researcher (1860–1936)

John Scott Haldane (2 May 1860 – 14/15 March 1936) was a Scottish physician physiologist and philosopher famous for his often-dangerous self-experimentation that led to many important discoveries about the human body and the nature of gases. He also experimented on his son, the celebrated and polymathic biologist J. B. S. Haldane, 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.

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