IXDKX 



315 



as a rotardinpf influonco, 123; and 

 .selection, :}2-;}7, IXJ, l;}7, 14G, 

 1G5-I(i(); and skin color, 221; so- 

 cial, 172; torrid, 133. 



Eoantliropus, 67-G8. 



Eolitliic period, 75-01 ; implements, 

 75-!) 1. 



Eolitlis, 7(i. 



Eskimo. 137, 145, 14(i, 234. 



Eur-African race, 217-218, 22(1. 



Enr-Asian race, 217, 218-21!). 



Exchange, 270-273, 2!)3-2!)5, 2!)(>. 



Exogamy, 243. 



Family, the ape, 40; human, 120. 



Festivity and the origin of articu- 

 late speech, 111-112. 



Feudalism, barbaric, 2SG-2S0. 



Fishes, reproduction in, 22. 



Five generation group of the patri- 

 archal kindred, 290-202. 



Flint implements, 74-101. 



Fluctuating variation, 3-8. 



Folkways, defined, 177; origin of, 

 174-177. 



Food, and civilization, 94, 134, 150; 

 and domestication of animals, 94, 

 281, 203; and the group struggle 

 for existence, 94, 105, 279, 281, 

 283, 293. 



i'ornialism, 199-200. 



Frazer, J, G., cited, 1.99, 240, 20 1- 

 2G3; quoted, 245. 



Galton, F., cited, 5, 17, 115; (pioted, 



5, 11. 

 Geologic ages, 50-52, G8-72, 74-7G. 

 Gerard, E., cited, 154. 

 Gerland, G., cited, 231. 

 Germ cell, 5, IG, 32-37. 

 Germ plasm, theory of contimiity 



of, 5, 10, 32-37, 

 Germinal variation, 0, 3fi-37. 

 Giddings, F. H., cited, 57, 71, 102, 



104, 108, 110, 113, 188, 203, 208- 



210, 217-218, 222, 233, 238, 2G7, 



2G8, 270, 272, 273, 275, 280, 281, 



282, 284, 28G; quoted, 71, 108, 



109, 111, 112, 2G5-2()G, 275, 281, 



288, 289, 2!)0-291, 292. 

 Ginnell, L., cited, 239. 

 Glaciers and prehistoric culture, 



74-87. 

 Glacial jjeriod, 52-57, 74-87, 142, 



22G. 

 Goldenweiser, A. A., cited, 245, 250, 



254, 257; quoted, 253-254. 

 Gould, B. A., cited, 123. 

 Greek clan, 238. 

 Group life, 102-120; advantages of, 



104-107; and custom, 114-118; 



and natural selection, lOG-107, 



114-117. 

 Gumplowitz, L., cited, 118, 119, 



172; quoted, 172, 173, 174. 



Habit, 116-118, 145, IGG, 177-178. 



Haeckel, cited, G7. 



Hair form, 203-205, 209, 



Heidelberg jaw, 65-G7. 



Head form. 129-130, 204-208, 210; 

 brachyeephalic, 204-205; dolicho- 

 cephalic, 204-205; mesocephalic, 

 208; long head, 204; round head, 

 205. 



History and climate, 74-87, 121- 

 122, 140-151; the organic view of, 

 121-122. 



Heredity, 1-19, 122; and acquired 

 characters, 32-37; and environ- 

 ment, 122, 120; laws of, 4-18; 

 Galton's law of regression, 17; 

 ]\rendelian, 11-15; social, 171- 

 202. 



ITominidte, 40, 113, 228. 



H.pkins, E. W., cited, 288. 



Homer, cited, 238. 



Howitt, A. W., cited, 185, 254. 2G4 



Hozumi, cited, 270. 



Human infant, 4G. 



Human nature, 104, 112-113 



