Certain races of men, without consciousness of their action, have varied in the character of their choices (sex selection) in such a way as to bring about varied conditions in their races, with respect to resistance to disease, of mental capacity and to moral quality. The Mongolian differs from the Hebrew, the Anglo-Saxon differs from the African. It depends largely upon the action of those now upon the earth, who are now making their choices of marriage, as to whether the races of the future shall be physical, mental or moral weaklings, or whether they shall be physically brave and hardy, mentally broad and profound, and morally sterling. [Sidenote: Summary] To summarize: There are three main lines along which eugenic improvement of the race may be attained: (1) Education of all people on the inheritability of traits; (2) segregation of defectives so that they may not mingle their family traits with those on sound lines; (3) sterilization of certain gross and hopeless defectives, to preclude the propagation of their type. There would seem to be great need of State Eugenic Boards, to correlate and to promote these activities, in the interests of the future population, and to give expert advice as to how to legislate wisely, and individual advice as to how to mate wisely. The latter function now falls entirely upon the Eugenics Record Office at Cold Spring Harbor, where the work is being carried on with great efficiency with the funds at command. _REFERENCES_ [57] Darbishire, A. D.: _Breeding and the Mendelian Discovery_, Cassell & Company, Ltd., London, New York, Toronto and Melbourne, 1911. [58] Davenport, Chas. B.: _Heredity in Relation to Eugenics_, Henry Holt & Company, New York, 1911. [59] Dugdale, Robert L.: _The Jukes_, G. P. Putnam's Sons, New York and London, 1910. [60] Galton, Francis: _Hereditary Genius_, D. Appleton & Company, New York, 1870. [61] Goddard, Henry H.: _The Kallikak Family_, The Macmillan Company, New York, 1912. [62] Kellicott, William E.: _The Social Direction of Human Evolution_, D. Appleton & Company, New York and London, 1911. [63] Huth, Alfred Henry: _Marriage of Near Kin_, Longmans, Green & Company, London, 1887. [64] Darwin, Charles: _The Descent of Man_, Thomas Y. Crowell & Company, New York, 1874. For further bibliographic lists, see bulletins entitled "Books and Journals," and "Publications" issued by the Eugenics Record Office, Cold Spring Harbor, N. Y. INDEX Abdominal muscles, beneficial effects of erect posture on, 57. Acids, excess of, from overabundance of animal proteins in diet, 39; fruit and vegetable, in a mixed diet, 43. Activity, necessary to living a hygienic life, 89; work and play the two great forms, of, 89. Adulterants in foods, harmful, 65. Advertising, measures of reform in, 162-163. Agar-agar, a preventive of constipation, 52-53; for use in colds, 279.