[CM]Ibid. p. 292. See also a discussion in Nature, in which Mr. Romanes and Professor Ray Lankester took part, beginning vol. xli. p. 437.
[CN]Weismann, "Essay on Heredity," p. 140.
[CO]"Origin of Species," p. 110.
[CP]With regard to blind cave-fish, Professor Ray Lankester has suggested that some selection has been effected. Those animals whose sight-sensitiveness enabled them to detect a glimmer of light would escape to the exterior, leaving those with congenitally weak sight to remain and procreate in the darkness of the cave.
[CQ]Darwin, "Descent of Man," pt. ii. chap. viii.
[CR]"Darwinism," chap. x.
[CS]"Darwinism," p. 295. Messrs. Geddes and Thomson, "The Evolution of Sex," p. 28, also contend that "combative energy and sexual beauty rise pari passu with male katabolism."
[CT]"Darwinism," p. 293.
[CU]Mr. Poulton, who takes a similar line of argument in his "Colours of Animals," lays special stress upon the production of white (see p. 326).
[CV]See Chapter VIII.