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.
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.