The problem of sterility, and its relation to natural selection.
George Bentham’s support of Darwinism.
The problem of sterility, and its relation to natural selection.
George Bentham’s support of Darwinism.
The problem of dimorphic plants and their fertility.
On triumph of "Darwinianism".
Discussion of their differences on subject of protection.
Accepts invitation.
ARW’s wife will accompany him to Down.
On sounds produced by Euchirus longimanus beetle. Sends a pair by post.
CD’s oscillating views relating to protection and sexual selection.
Submits a 15–point argument against CD’s views on the coloration of female birds and insects.
On their differences concerning sexual selection and protection.
Sexual differences in coloration. Sexual selection versus natural selection as explanations. ARW continues to argue against sexual selection, saying that natural selection, in keeping the female dull for protection, would account for differences in sexual colouring more effectively than inheritance and partial transmission of sexually selected male colours. Colours of female birds of paradise. Protective coloration. Disagrees with CD on coincidence of hidden nests and bright colours of females.
Sexual selection, protection.