Note 1a — The Psychical Kinship
Reading edition
1b. Romanes: Mental Evolution in Animals; New York, 1898. 2. Gilbraith: Ethnological Journal, 1869, p. 304. 3. Burton: First Footsteps in East Africa; London, 1856. 4a. 4b. Lubbock: Origin of Civilisation; New York, 1898. 5. Demoor: Evolution by Atrophy; New York, 1899. 6. This topic is more fully presented in the chapter “The elements of the human and non-human mind compared.”