[13] J. A. Thompson, Heredity, p. 331. N. Y., G. P. Putnam’s Sons, 1908.

[14] Gustave Michaud, Shall We Improve Our Race? Popular Science Monthly, Vol. 72, p. 77 (1908).

[15] J. Arthur Thompson, Heredity, p. 308. N. Y., G. P. Putnam’s Sons, 1908.

[16] Lester F. Ward, Applied Sociology, pp. 224-282. Boston, Ginn & Co., 1906.

[17] For a more complete statement of the problem, see Social Adjustment, Scott Nearing, New York: Macmillan Company, 1911.

[18] Robert Louis Stevenson, Virginibus Puerisque.

[19] Wm. Z. Ripley, Races of Europe. N. Y., D. Appleton & Co., 1899.

[20] C. E. Woodruff, The Expansion of Races. N. Y., Rebman, 1909.

[21] D. S. Jordan, The Human Harvest, p. 54. Boston, American Unitarian Association, 1907.

[22] Ibid, p. 48.