---- of racial poisons, 318 ---- of transmissible diseases, 318 Biography, as a guide to heredity, 152 ----, neglect of ancestral data in, 152 “Biology and History,” by Dr. Saleeby, 254 (_note_) “Biology, The Principles of,” by Herbert Spencer, 312 Biometrics, the study of, xiii Birth-rate, falling, eugenic aspect of the, 10 ---- in China, 78 ---- in Japan, 78 ---- of man, 72 ----, statistics of, 74 Births, ratio of, of the sexes, 294 “Black Stain, The,” by G. R. Sims, 237, 319 Body, the necessity of the, 53 ----, relation of the, to the mind, 52 Brains, breeding for, 54 Breeding for brains, 54 ---- for energy, 66 ---- for intelligence, 147, 150, 153 ---- for motherhood, 145, 146 Celibacy, non-eugenic results of, 116 Census, the uselessness of the, 6, 94 “Century Dictionary, The,” on eugenics, 314 Characters, inborn, _versus_ acquirements, 101 Child-birth, superstition about, 106 Children, eugenics and cruelty to, 295 ----, Society for the Prevention of Cruelty to, 295 “Children of the Nation, The,” by Sir John Gorst, 319 China, the birth-rate in, 78 ----, racial state of, 274 Church, non-eugenic action of the, 116 Civic worth, 68 Civilisation, ideal, 117 Civilisations, the decay of, 255 Cocaine, the racial influence of, 250 “Collectivism, Individualism and,” by Dr. Saleeby, 101 (_note_) Colour-blindness, _see_ Daltonism Conception, attitude of eugenics before and after, 30 “Congenital” defined, 105, 112 “Conscientiousness”, 117 Crime, eugenics and, 177 ----, theories of, 177 ----, treatment of, 178 Criminality and civic worth, 68 “Cry of the Children, The,” by G. R. Sims, 237, 319 Daltonism and heredity, 179 “Dark ages,” caused by the celibacy of the fittest, 116 “Darwinism To-day,” by Vernon L. Kellogg, 312 “Data of Ethics, The,” by Spencer, 302 (_note_) Deaf-mutism and heredity, 173 Death-rate, a low, the cause of the multiplication of man, 73 ----, influence of density of population on the, 75 ----, limitation of the, 78 ----, statistics of the, 74 Decadence, National, 279 “Decadence,” by A. J. Balfour, 279 “Degeneration,” defined, 25 (_note_) Degeneration, human, and alcohol, 217, 242 ----, racial, 49 “Descent of Man, The,” by Charles Darwin, 171, 191, 197, 279, 311 “Deterioration,” defined, 25 (_note_) Diminution of offspring, the eugenic value of, 162 Disease, latency of, 108 Diseases, transmissible, bibliography of, 318 “Diseases of Occupation,” by Sir Thomas Oliver, 247 (_note_), 319 “Diseases of Society: The Vice and Crime Problem,” by G. K. Lydston, 318 Domestics, the politics of the future, 33, 285 “Drink Problem, The,” by Fourteen Medical Authorities, 319 “Drink Problem, The,” by Mrs. Scharlieb, 214 Drunkard, influence of the, on the race, 241 ----, marriage and parentage of the, 220, 235