(4) Edman, Irwin. Human Traits and Their Social Significance. Boston, 1919.
(5) Wallas, Graham. Human Nature in Politics. London, 1908.
(6) Lippmann, Walter. A Preface to Politics. [A criticism of present politics from the point of view of human-nature studies.] New York and London, 1913.
(7) James, William. The Varieties of Religious Experience. A study in human nature. London and New York, 1902.
(8) Ellis, Havelock. Studies in the Psychology of Sex. 6 vols. Philadelphia, 1900-1905.
(9) Thomas, W. I. Source Book for Social Origins. Chicago, 1909. [Contains extensive bibliographies.]
B. The Mores
1. Comparative Studies of Cultural Traits:
(1) Tylor, E. B. Primitive Culture. Researches into the development of mythology, philosophy, religion, language, art, and custom. 4th ed. 2 vols. London, 1903.
(2) Sumner, W. G. Folkways. A study of the sociological importance of usages, manners, customs, mores, and morals. Boston, 1906.