Chapter XVIII

[XVIII-1] H. F. Osborn, _Men of the Old Stone Age_, Scribner, 1918, Ch. I.

[XVIII-2] W. G. Sumner, _Folkways_, Ginn, 1907, p. 43.

[XVIII-3] Ibid., p. 13.

[XVIII-4] Ibid., p. 266.

[XVIII-5] Ibid., pp. 343, 362.

[XVIII-6] Ibid., p. 378.

[XVIII-7] W. I. Thomas, _Sex and Society_, p. 51.

[XVIII-8] Ibid., p. 182.

[XVIII-9] Ibid., p. 41.

[XVIII-10] Ibid., p. 40.

[XVIII-11] Ibid., p. 41.

[XVIII-12] Ibid., p. 54.

[XVIII-13] Ibid., p. 61.

[XVIII-14] Ibid., p. 65.

[XVIII-15] Ibid., Ch. II.

[XVIII-16] Ibid., p. 76.

[XVIII-17] Ibid., p. 201.

[XVIII-18] Ibid., p. 418; cf. W. I. Thomas, _Sex and Society_, University of Chicago Press, 1907, pp. 201–220.

[XVIII-19] Ibid., p. 629.

[XVIII-20] A. G. Kellor, _Societal Evolution_, Macmillan, 1915.

[XVIII-21] Edward Westermarck, _The Origin and Development of the Moral Ideas_, Macmillan, 1906, I:159.

[XVIII-22] Ibid.

[XVIII-23] Ibid., p. 160.

[XVIII-24] Ibid., Vol. II. p. 740.

[XVIII-25] Ibid., II:745.

[XVIII-26] L. T. Hobhouse, _Morals in Evolution_, Holt, 1919, p. 1.

[XVIII-27] Ibid., p. 2.

[XVIII-28] Ibid.

[XVIII-29] Ibid., p. 43; cf. Hobhouse, _Social Evolution and Political Theory_, Lemcke, 1911, pp. 128 ff.

[XVIII-30] Ibid., p. 60.

[XVIII-31] Ibid., p. 64.

[XVIII-32] _Social Evolution and Political Theory_, p. 148.

[XVIII-33] _Morals in Evolution_, pp. 130, 71.

[XVIII-34] William Wundt, _Elements of Folk Psychology_, trans. by Schaub, Macmillan, 1916, p. 1.

[XVIII-35] Ibid., p. 478.

[XVIII-36] Ibid., p. 514.

[XVIII-37] Ibid., p. 515.

[XVIII-38] Ibid., p. 516.

[XVIII-39] Franz Boas, _The Mind of Primitive Man_, Macmillan, 1911, p. 102.

[XVIII-40] Hobhouse, _Social Evolution and Political Theory_, p. 39.

[XVIII-41] W. I. Thomas, _Source Book for Social Origins_, University of Chicago Press, 1909, p. 18.

[XVIII-42] Ibid., p. 20.

[XVIII-43] Ibid., p. 14.

[XVIII-44] Thomas, _Sex and Society_, p. 51.

[XVIII-45] Thomas and Znaniecki, _The Polish Peasant in Europe and America_, University of Chicago Press, 1918, I:22.

CHAPTER XIX

[XIX-1] Francis Galton, _Hereditary Genius_, Macmillan, 1914.

[XIX-2] _Inquiries into the Human Faculty_, Dutton, 1908.

[XIX-3] See C. W. Saleeby, _The Progress of Eugenics_, Funk and Wagnalls, 1914, pp. 1 ff.

[XIX-4] Karl Pearson, _The Grammar of Science_, Black, 1911, p. 1.

[XIX-5] Ibid., p. 6.

[XIX-6] See Saleeby, _The Progress of Eugenics_, Ch. II.

[XIX-7] See C. B. Davenport, _Heredity in Relation to Eugenics_, Holt, 1911.

[XIX-8] See Popenoe and Johnson, _Applied Eugenics_, Macmillan, 1918.

[XIX-9] Ibid., p. 213.

[XIX-10] Ibid., pp. 218, 231.

[XIX-11] Ibid., Ch. XVI.

[XIX-12] Ibid., p. 381.

[XIX-13] Ibid., p. 380.

[XIX-14] Saleeby, _The Progress of Eugenics_, p. 65.

[XIX-15] Popenoe and Johnson, op. cit., p. 387.

[XIX-16] Hobhouse, _Social Evolution and Political Theory_, Lemcke, 1911, p. 45.

[XIX-17] Popenoe and Johnson, op. cit., p. 292.