1881 portrait of Charles Robert Darwin (12 February 1809 - 19 April 1882) English Naturalist and author of the Origin of Species. 1922 Hand coloured portrait aquatint of Darwin by G. Sidney Hunt after the 1881 painting by John Collier. Collier's portrait is mentioned in his son Francis Darwin's 'Life and Letter of Charles Darwin' as follows 'Many of those who knew (Darwin's) face most intimately think that Mr. Collier's picture is the best of the portraits'. Darwin's theory of evolution by natural selection stands as one of the greatest ideas of science. No release available.