Waxweiler, E.

1906. Esquisse d’une Sociologie. L’Inst. de Sociologie (Solvay). Notes et Mémoires, Fascicule 2. pp. 306. Bruxelles.

A very important survey of sociology as a branch of ethology or ecology. The history of ecology, and animal societies are parts which deserve special mention. A diagram, on p. 63, gives the subdivisions of ethology.

Kropotkin, P.

1903. Mutual Aid a Factor of Evolution. pp. 348. New York.

Parmelee, M.

1913. The Science of Human Behavior. Biological and Psychological Foundations. pp. 443. New York. The Macmillan Company.

An important discussion of certain phases of animal and human responses. Communities are considered mainly from the standpoint of “aggregate ecology” and phylogeny. Little recognition is made of the “ecological association” as a fundamental unit in the study of human relations.

Adams, Chas. C.

1909. The Ecological Succession of Birds. Ann. Rep. Mich. Geol. Surv. for 1908, pp. 121-154.