[120] Kuczynski, R. R., Quarterly Journ. of Economics, Nov. 1901, and Feb., 1902.

[121] Nearing, Scott, "The Younger Generation of American Genius," The Scientific Monthly, II, pp. 48-61, Jan., 1916. "Geographical Distribution of American Genius," Popular Science Monthly, II, August, 1914.

[122] In the chapter on Sexual Selection it was shown that the Normal School girls who stood highest in their classes married earliest. This may seem a contradiction of the Wellesley marriage rates in this table. The explanation probably is that while mental superiority is itself attractive in a mate, there are interferences built up in the collegiate life.

[123] Banker, Howard J., "Co-education and Eugenics," Journal of Heredity, VIII, pp. 208-214, May, 1917.

[124] Hill, Joseph A., "Comparative Fecundity of Women of Native and Foreign Parentage," Quarterly Pubs. Amer. Statistical Assn., XIII, 583-604.

[125] See Willcox, W. F., "Fewer Births and Deaths: What Do They Mean?" Journal of Heredity, VII, pp. 119-128, March, 1916.

[126] The data are published in full by Paul Popenoe in the Journal of Heredity, October, 1917. It must be noted that, in spite of their small salaries, the Methodist clergymen marry earlier and have more children than do other men of equal education and social status, such as the Harvard and Yale graduates. This difference in marriage and birth-rate is doubtless to be credited in part to their inherent nature and in part to the action of religious idealism. It confirms the belief of eugenists that even under present economic circumstances the birth-rate of the superior classes might be raised appreciably by a campaign of eugenic education.

[127] For an official statement of the attitude of the birth-rate of the Mormon church, see Journal of Heredity, VII, pp. 450-451, Oct., 1916.

[128] Mecklin, John M., Democracy and Race Friction, a Study in Social Ethics, New York, 1914. p. 147.

[129] It would be more accurate to say the Nordic race. Other white races have not uniformly shown this discrimination. The Mediterranean race in particular has never manifested the same amount of race feeling. The Arabs have tended to receive the Negro almost on terms of equality, partly on religious grounds; it seems probable that the decadence of the Arabs is largely due to their miscegenation.