[60] In 9th Trans. of American Association for the Study and Prevention of Tuberculosis, p. 117.
[61] Geographical and Historical Pathology (New Sydenham Society, 1883), Vol. III, p. 266.
[62] Reid, G. Archdall, The Present Evolution of Man, and The Laws of Heredity.
[63] In the South Seas, p. 27; quoted by G. Archdall Reid, The Principles of Heredity (New York, 1905), p. 183. Dr. Reid has discussed the rôle of disease and alcohol on the modern evolution of man more fully than any other writer.
[64] See, for example, John West's History of Tasmania, Vol. II, Launceston, Tasmania, 1852.
[65] See Hollingworth, H. L., Vocational Psychology, p. 170, New York, 1916.
[66] Net increase here refers only to the first year of life, and was computed by deducting the deaths under one year, in a ward, from the number of births in the same ward for the same year. For details of this study of the Pittsburgh vital statistics, see the Journal of Heredity, Vol. VIII, pp. 178-183 (April, 1917).
[67] Quoted from Newsholme and Stevenson, The Decline of Human Fertility, London, 1906.
[68] Heron, David, On the Relation of Fertility in Man to Social Status, London, 1906. The account is quoted from Schuster, Edgar, Eugenics, pp. 220-221, London, 1913.
[69] Ztschft. f. Sozialwissenschaft, VII (1904), pp. 1 ff.