City Readers Digital Historic Collections at the New York Society Library

Richard Kirwan, LL.D, FRS, MRIA (1 August 1733 – 22 June 1812) was an Irish scientist. He was one of the last supporters of the theory of phlogiston.

Kirwan was active in the fields of chemistry, meteorology, and geology. He was widely known in his day, corresponding and meeting with Lavoisier, Black, Priestley, and Cavendish.