510 



INDEX 



Baringo District, early intercourse, 173 ; 

 restriction of intercourse, 176 ; war, 

 181. 



Baronga, lactation, 174 ; restriction 

 of intercourse, 176 ; age at marriage, 

 227. 



Basonge, infanticide, 180. 



Basuto, health, 183 ; infant mortality, 

 184. 



Bayaka, restriction of intercourse, 

 175 ; fertility, 178 ; war, 181 ; witch- 

 craft, 182. 



Bechuanaland, property, 210. 



Behaviour, evolution of, 45. 



Benin, restriction of intercourse, 175 ; 

 war, 180. 



Binet-Simon methods, 393. 



Biometric methods, 358. 



Bismarck Archipelago, lactation, 185 ; 

 restriction of intercourse, 186 ; fer- 

 tility, 188 ; abortion, 189 ; infanti- 

 cide, 191. 



Black Death, 248. 



Blackfeet, war, 152, 170. 



Boers, 450. 



Bontoc Igorot, lactation, 185 ; abor- 

 tion, 190 ; head-hunting, 194 ; infant 

 mortality, 195 ; marriage customs, 

 226. 



Borneo, fertility, 191 ; war, 194 ; head- 

 hunting, 194, 227. 



Bornu, age at marriage, 174. 



Botocudos, fertilitv, 144 ; infanticide, 

 149 ; health, 159. 



Brazilians, early intercourse, 164 ; fer- 

 tility, 168 ; abortion, 169, 221 ; 

 health, 172, 236 ; infant mortality, 

 172 ; property, 208 ; marriage cus- 

 toms, 230. 



Bronze Age, 125. 



Buddliism, celibacy, 252. 



Burma, marriage, 253. 



Bushmen, early intercourse, 136 ; fer- 

 tility, 143 ; infanticide, 148 ; war, 

 150; treatment of aged, 154 ; health, 

 158, 232 ; property, 205 ; division of 

 food, 212. 



Bushongo, early intercourse, 173 ; lacta- 

 tion, 174 ; abortion, 179 ; infanti- 

 cide, 180 ; property, 209. 



Californians, early intercourse, 1 26 ; 

 lactation, 138 ; age at marriage, 140 ; 

 fertility, 140 ; infanticide, 149 ; war, 

 152; treatmentof aged, 155 ; health, 

 159 ; infant mortality, 160. 



Cameroon district, restriction of inter- 

 course, 175. 



Caroline Islands, infanticide, 190 ; 

 marriage customs, 224. 



Carrier tribes, property, 206. 



Casual Labour, over-jDopulation and, 

 290. 



Catholic Church, contraceptive prac- 

 tices and, 294. 



Celebes, early intercourse, 185 ; fer- 

 tility, 189 ; abortion, 190. 



Celibacy, primitive races, 226 ; histori- 

 cal races, 251, 263, 278. 



Cells, nature of, 39. 



Chaco Indians, abortion, 169 ; infanti- 

 cide, 169 ; war, 171. 



Chaldea, celibacy, 251. 



Charruas, war, 152 ; health, 236. 



Chellean period, 121. 



Chepewayans, lactation, 138 ; fertility, 

 144 ; infanticide, 149 ; war, 152 ; 

 treatment of aged, 155. 



Cheyenncs, abortion, 169, 220. 



Chichmics, lactation, 165. 



Children, death-rate among hunting and 

 fishing races, 159 ; among agricul- 

 tural races, 172, 183, 196 ; among 

 historical races, 249. 



— number of, see Fertility. 



Chinese, fecundity, 100 ; celibacy, 252 ; 

 marriage, 253 ; restriction of inter- 

 course. 254 ; contraceptive methods, 

 255 ; fertility, 256 ; abortion, 256 ; 

 infanticide, 259, 276 ; over-popula- 

 tion, 276 ; organization of society, 

 432. 



Chinooks, fertility, 99 ; lactation, 138 ; 

 abortion, 146 ; infanticide, 149 ; war, 

 151. 



Chiquitos, fertility, 168. 



Christianity, war and, 249 ; marriage 

 and, 263 ; infanticide and abortion 

 and, 268. 



Chromosomes, as physical basis of 

 heredity, 65. 



Civilization, cyclical course of, 459. 



Climate, famine and, 249, 274 ; migra- 

 tion and, 301 ; head form and, 341 ; 

 tropical effects of, 342 ; selection 

 and, 371. 



Comanches, early intercourse, 137 ; 

 fertility, 144 ; war, 152. 



Confucianism, marriage and, 253. 



Congo tribes, early intercourse, 173 ; 

 lactation, 174 ; restriction of inter- 

 course, 175; contraceptive methods, 

 177 ; fertility, 178 ; abortion, 179 ; 

 infanticide, 180; war,180 ; witchcraft, 

 182 ; infant mortality, 184 ; marriage 

 customs, 229 ; food, 234. 



Contact, influence upon tradition, 424 ; 

 geography and, 427. 



Contraceptive methods, agricultural 

 races, 177, 186 ; historical races, 

 255, 266, 287, 315 ; Catholic Church 

 and, 294. 



Co-operation, in search for food, 211. 



Copper Age, 125. 



Copper River tribes, infanticide, 148. 



Copulation, external, 42 ; internal, 43. 



