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Darwin Correspondence Project



Hypothetical sphinx moth
Hypothetical sphinx moth, illustration by T. W. Wood, Quarterly Journal of Science 4 (1867)
Cambridge University Library

Darwin in letters, 1867: A civilised dispute

Charles Darwin’s major achievement in 1867 was the completion of his large work, The variation of animals and plants under domestication (Variation). The importance of Darwin’s network of correspondents becomes vividly apparent in his work on expression in 1867, as he continued to circulate a list of questions on human expression that he may have drawn up in late 1866. His correspondents were asked to copy the list and forward it to those who might best answer the questions, with the result that Darwin began to receive replies from different corners of the world.

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