(4) Massart and Vandervelde: Parasitism—Social and Organic.
(5) Myers: History of Great American Fortunes, entire work is an account of social parasitism in America; special references: Vol. II., pp. 127–38, 291–301; Chapters 11 and 12; Vol. III., pp. 160–176.
(6) Veblen: The Theory of the Leisure Class.
(7) Ross: Social Control; The Foundations of Sociology, pp. 219–23, 272–76; Social Psychology, Chapters on Suggestibility, The Crowd, and Mob Mind.
(8) L. F. Ward: Dynamic Sociology, Vol. I., pp. 565–597; Psychic Factors in Civilization, Chapters 33 and 38; Applied Sociology, pp. 224–295, 300–302, 307–313, 319–326; Pure Sociology, pp. 266–72; “Social Classes in the Light of Modern Sociological Theory,” American Journal of Sociology, March, 1908; Education and Progress, Address delivered before the “Plebs” League, Oxford, England, August 2, 1909.
9 W. G. Sumner: Folkways, Chapter 6.
(10) Morgan: Ancient Society, pp. V.-VIII.; Pt. I. Chs. 1–3; and all of Pt. IV.
(11) J. O. Ward: Ancient Lowly, Chapter—“Spartacus.”
12 Shoaf: The Story of the Mollie McGuires.
13 Hanford: The Labor War in Colorado.