Summary

Has sent copy of his new book, Colour-sense [1879]; in anticipation of criticism, he justifies his reliance on recorded observations rather than experiments, by the heavy demands of his career as a journalist.

Summary

Thanks for criticisms of Colour-sense.

Clarifies his views that actions desirable for species result in development of nervous organs capable of pleasurable stimulation.

Believes that all "tastes" occurring in nature are explicable with reference to ancestral habits and that none is purely arbitrary.

Summary

Thanks for postcard informing him of Delboeuf’s review of his book; he had already seen review.

Summary

Read GA’s book [The colour-sense] with "great interest". Makes criticisms and suggestions.

Cannot believe in GA’s theory of the origin of pleasure and pain.

Is glad he defends sexual selection;

CD finds A. R. Wallace’s explanations "mere empty words" and for many years he has "quite doubted [ARW’s] scientific judgment".

Considers the possible effect of environmental colour on the colour tastes of animals.

Summary

Has just read GA’s article in Fortnightly Review ["A problem of human evolution", 31 (1879): 778–86]. GA’s views very probable. Something wonderful to hear anyone defending sexual selection.

Summary

Has GA seen an article on GA’s Colour-sense by a great man, J. R. L. Delboeuf, in Revue Scientifique 24 May 1879? It has pleased CD greatly.