[16] Parkes’ Manual of Practical Hygiene, 4th edition, p. 493.
[17] Ibid., p. 493.
[18] W. B. Carpenter’s Principles of Human Physiology, 7th edition, p. 631.
[19] W. B. Carpenter’s Principles of Human Physiology, 7th edition, p. 812.
[20] The unhealthiness and indecency of harem life, with its effect upon the boys and girls, its encouragement of abortion, and the unhappy and degraded condition of the women, are sketched with the painful truth of close observation in The People of Turkey, edited by S. Lane Poole—a book worthy of careful consideration. See also Lane’s Egyptians, etc.
[21] Bulgaria and the Bulgarians.
[22] Abstract from the Sun. See Thirtieth Annual Report of the Prison Association of New York.
[23] See Sadler on Population for many curious facts tending to show how strictly Nature guards this equality.
[24] See Michel Lévy’s Traité d’Hygiène, 5th edition, vol. i., p. 145.
[25] Hufeland’s Art of Prolonging Life, edited by Erasmus Wilson. 2nd edition, Part II., p. 138.