304 



INDEX 



Polyandry, 27!). 



Polygamy, 279. 



Polynesian-European racial group, 

 210, 214. 



Powell, J. W., cited, 280. 



Population, density of, and culture, 

 88, 151; and food, 94, 105, 134, 

 150, 279-283, 293; movement of, 

 140-142, 143, 140-149, 165, 106. 



Pottery, of American Indians, 235; 

 neolithic, 94, 234. 



Prehistoric, ages, 39-101; caves, 71- 

 91; implements, 71-101; man, 

 39-101; monuments, 94-101; 

 period, 71-101, 239; remains of 

 man, 58-101. 



Primary period, 52. 



Primary stimuli, 108. 



Property, 183, 271, 274, 284. 



Protective coloring, 26-27. 



Pueblo Indians, 280. 



Quaternary period, 52, 57. 



Race, Alpine, 218, 220, 223, 226; 

 Asian-American racial group, 210, 

 214; Australian, African racial 

 group, 210, 214; Baltic, 217, 223; 

 Black, 208, 209; Danubean, 220, 

 226; Eur-African, 217-218, 226; 

 Eur-Asian, 217, 218-219; Polyne- 

 sian-European racial group, 210- 

 214; Teutonic, 217-218, 223; 

 White, 208, 209, 220-229; Yel- 

 low, 208, 209. 



Ratzel, F., cited, 117, 151, 275. 



Recapitulation theory of embryo- 

 logical development, 43-46, 66-67. 



Recessive Mendelian character, 11- 

 15. 



Regression, Galton's theory of, 17. 



Religion, of ancestor-worship, 269, 

 284; and animism, 264-269; con- 

 tinuous theory of spiritual exist- 

 ence, 269; and physical environ- 

 ment, 169; retributive theory of 



spiritual existence, 269; and be- 

 lief in human soul, 265-266, 269; 

 and theory of transmigration of 

 souls, 269. 



Remains of prehistoric man, 58 

 101, 218. 



Reproduction, in fishes, 22; in ele- 

 phants, 21 ; and natural selection, 

 20-24; and robins, 21-22. 



Response to stimulus, 108, 166. 



Ripley, W. Z., cited, 152, 154, 203, 

 218. 



Robins, reproduction in, 21-22. 



Romanes, G. J., cited, 21, 22, 43. 



Roman clan, 238. 



Ross, E. A., quoted, 185, 194. 



Rough stone age, 76, 87, 101. 



Sardinia, island of, 153. 

 Saxons, 154. 



Science, 149-150, 268, 295. 

 Secondary period, 52. 

 Secondary stimuli, 109. 

 Seebohm, F., cited, 291. 

 Seebohm, H. E., cited, 291. 

 Seligman, E. R. A., cited, 272, 276, 



283, 293; quoted, 281. 

 Semple, E. C., cited, 122, 139, 149, 



158; quoted, 121-122, 139-140, 



157. 



Sieroshevski, V. L., cited, 117. 

 Sexual selection, 31-32, 49; Dar- 

 win's theory of, 31-32; and man, 



49. 

 Skin color, 206, 208-209, 221-222; 



and climate, 221. 

 Slavery, 276, 293-294. 

 Social animals, 102-104. 

 Social institutions, 171-202, 233- 



296. 



Social medium, 171-174. 

 Social organization, 145, 173, 234, 



239-277. 



Social pressure, 117, 166. 

 Social selection, 116, 117, 166, 179. 

 Solutre"an epoch, 82. 



