----, breach of promise of, and race culture, 201 ----, ---- ----, the law of, 202 ----, childless, 168 ----, contemporary, eugenic value of, 198 ----, control of, 184, 186 ----, defined, 170 ----, engagement of, eugenics and the length of, 198 ----, eugenic, 309 ----, ----, preparation for, 144 ----, ----, utility of, 162, 163, 168 ----, happiness in, extent of, 195 ----, human, 164 ----, inter-racial, xi ----, longevity and, 191 ----, “mixed” games and, 196, 197 ---- of cousins, xii, 168 ---- of the deaf and dumb, 173 ----, present influence of, on eugenics, 187 ----, procreation, the paramount function of, 158 ----, selection for, 189 ----, ----, by woman, 194 ----, socialism and, 198 ----, survival-value of, 164 ---- systems, English and French, 199 ----, the ball-room and, 196, 197 ----, the field of choice in, 195 ----, the Income Tax and, 174 ----, the, of inebriates, 235 ----, the sanctity of, 313 ----, unselfish, 144 “Marriage, Human, The History of,” by E., Westermarck, 312 “Marriage, Restrictions in,” by F. Galton, 185, 204, 315 “Marriage, The Evolution of,” by Prof. Letourneau, 312 Married women's labour, 270 “Mass _versus_ mind”, 95 Maternal care, development of, 150 ---- impressions, 111 Maternalism, the principle of, 169 Maternity, _see_ Motherhood “Matrimonial Institutions, A History of,” by G. E. Howard, 312 “Memories of my Life,” by F. Galton, vii, 308 Mendelism, 108, 118, 293 “Methods and Scope of Genetics, The,” by Prof. W. Bateson, 306 Mind, selection of, 52 ----, the ascent of, 300 ----, the determinator of leadership, 59 ----, the master in war, 97 ----, the relation of, to the body, 52 ---- _versus_ mass, 95 ---- ---- muscle, 65 “Mind, The Hygiene of,” by T. S. Clouston, 319 “Mind, Hygiene of Nerves and,” by August Forel, 319 Monogamy, eugenic value of, 165, 170 ----, survival-value of, 166 ---- the ideal condition, 150 ---- the rule among higher animals, 163 Morality, survival-value of, 51 Morphinomania, parental, its influence on the offspring, 212 Motherhood, 169 ---- and love, 152 ----, breeding for, 145, 146 ---- carried on by unskilled labour, 151 ---- during the decline of Rome, 270, 271 (_note_) ----, education for, 151 ----, history and, 269 ----, Jewish, 274 ----, psychical, 151, 153 ----, the elevation of, 32 ----, the environment provided by, 269 ----, the evolution of, 149 ----, the safeguarding of, 170 ----, the subsidisation of, 151 Mothers, school for, 151 Multiplication of man, a low death-rate the cause of, 73 ---- ----, the laws of, 86 ---- ----, the rate of, 90 ---- of the unfit, 189, 279 “Munera Pulveris,” by John Ruskin, 302 (_note_), 320 Muscle, right training of, 62 ----, the cult of, 60 ---- _versus_ Mind, 65 Muscles, useless, 61