[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. [130] Mecklin, _op. cit._, p. 147. [131] Blascoer, Frances, _Colored School Children in New York_, Public Education Association of the City of New York, 1915. The preface, from which the quotation is taken, is by Eleanor Hope Johnson, chairman of the committee on hygiene of school children. [132] Mecklin, _op. cit._, p. 32. [133] The Negro's contribution has perhaps been most noteworthy in music. This does not necessarily show advanced evolution; August Weismann long ago pointed out that music is a primitive accomplishment. For an outline of what the Negro race has achieved, particularly in America, see the _Negro Year Book_, Tuskegee Institute, Ala. [134] _Social Problems; Their Treatment, Past, Present and Future_, p. 8, London, 1912. [135] Stetson, G. R., "Memory Tests on Black and White Children," _Psych. Rev._, 1897, p. 285. See also MacDonald, A., in _Rep. U. S. Comm. of Educ.,_ 1897-98. [136] Mayo, M. J., "The Mental Capacity of the American Negro," _Arch. of Psych._, No. 28. [137] Phillips, B. A., "Retardation in the Elementary Schools of Philadelphia," _Psych. Clinic_, VI, pp. 79-90; "The Binet Tests Applied to Colored Children," _ibid._, VIII, pp. 190-196. [138] Strong, A. C., _Ped. Sem._, XX, pp. 485-515.