(34) Ferri: Socialism and Modern Science, Chapter 7.
35 Seligman: The Economic Interpretation of History.
36 Boudin: The Theoretical System of Karl Marx, Chapters 1–5, 8–10.
37 Patten: “The Economic Causes of Moral Progress,” Annals of Amer. Soc. Pol. and Soc. Sci., Sept., 1892.
(38) Engels: The Origin of the Family, Property and the State, special attention to Chapters 8, 9; and Socialism—Utopian and Scientific.
(39) Hobson: The Evolution of Modern Capitalism; Imperialism, special attention to first six chapters; The Psychology of Jingoism; The War in South Africa, Part II.; and John Ruskin—Social Reformer, Chapters 3–8 inclusive, and Appendix 1.
40 Ferrero: Militarism.
41 Liebknecht: Militarismus und Anti-Militarismus.
42 Büchner: Industrial Evolution (Wickett’s translation), Chapters 4–5.
(43) Robinson and Beard: The Development of Modern Europe, Vol. II., Chapters 18, 30–31.