468 



behavior of, 388; maps, 269, 273; 



number of, 387, 390; numbers and 



mutation, 389; reduction of, 253 

 Classification, 49, j')., 303 

 Cleavage of egg, 125 

 Coal, 23, 27, 36 

 Coal age, 37 

 Color-blindness, 261, 265; inheritance of, 



264 

 Comparative anatomy, 436; and evolution, 



79 



Comparative embryology, 132 



Comparative method, 435 



Comparative psychology, 437 



Conjugation, 272 



Continuity, 8, 13 



Convergence, 107; adaptive, 109 



Copernicus, Nicolaus (1473—1543), 280 



Coral, 3 5 



Correlation, 341, 393; doctrine of, ^d^ 97 



Correns, Carl (1864- ), 288 



Crampton, Henry E. (1875- )> i90j 



360 

 Creation, xii, 119, 410; of new species, 177 

 Creative synthesis, 424 

 Cremation, 464 

 Cretinism, 214 

 Cro-Magnon man, 197, 198 

 Crookes, Sir William (1832— 1919), 416 

 Crossing-over, 269, 270, 271, 272 

 Cunningham, Joseph T. (1859- ) , ziz 



Curie, Marie (1867— ), 25, 26 



Curie, Pierre (1859— 1906), 25, 16 

 Cuvier, George (1769-1832), 31, 32, 33, 

 38, 79, 96, 97, 109, 140, 282, 283, 284, 



285, 286, 303, 304, 410, 436 (portrait 

 facing p. 33). 



Darwin, Charles (1809-1882), xv, 78, 139, 

 140, 156, 178, 183, 191, 231, 274, 279, 



286, 292, 293, 302, 305, 309, 314, 329, 



330. 33i> 332, 333» 334. 335. 33^, 337. 

 339, 341, 342, 343, 344, 350, 356, 357, 

 358, 359, 360, 361, 366, 367, 368, 371, 

 372. 373. 393. 394. 396, 399, 401, 436, 

 438, 444, 449, 450, 452, 456; Auto- 

 biography, 330; The Origin of Species, 

 279, 288, 313, 329, 330, 343, 372, 393. 

 435 (portrait facing p. 193) 



Darwin, Erasmus (1731-1802), 282 



Darwinism, 287, 288 



Davenport, Charles B. (1866- ), 343 



Davis, Bradley M. (1871- ), 382 



Index 



D'Azyr, Felix Vicq (1748-1794), 78 

 Dean, Bashford (1867-1928), 346 

 Deer, horns of, 189 

 Descent with modification, 13, 134, 329, 



330, 429 



Design as explanation, 454 



Determinate variation, 40 j 



Determiners in heredity, 248, 250 



Determinism, 419, 447; and freedom, 464 



Development, 128, 129, 130; chemical 

 modification of, 172; individual, 126; 

 influence of thyroid on, 173; modifica- 

 tion of, 171; of mammals, 142; of 

 plants, 143; stages in, 127 



Deviation from parents, 72 



Diabrotica, variations in wing pattern, 402, 

 403 



Differentiation, 427 



Di-hybrid, 242, 243 



Diphtheria, 306 



Diplodiniu7H, 87 



Diploidy, 254 



Discontinuity, 397; paradox of, 371 



Disease, and heredity, 317, 320; as "nor- 

 mal," 458 



Divergence, adaptive radiation, 109; In 

 development, 208 



Division of labor, 86, 427 



Dominance, 211, 232, 235, 241, 242, 245; 

 incomplete, 236, 240 



de Dorlodot, Henri (1855— 1929), 296 



Drosophila, 184, 255, 257, 261, 383 



Dryopitheciis, 202, 465 



Dubois, Eugene (1858- ), 18, 198 



Ductless glands, see endocrine 



Earth, age of, 25; origin of, 18 



Ehrlich, Paul (1852-1915), 61 



Eimer, Theodor (i 843-1 898), 401 



Elephant, 31, 34, 42, 46 



Elevation of land, 29 



Embryo, human, 141 



Embryogeny, 124 



Embryology, 126; plant, 144 



Embryos and fossils, 140 



Emergence, 415, 416, 418, 419, 422, 42J, 

 428, 430; and mutation, 420; and 

 the miraculous, 417; and uniformity^ 



417 

 Emergent evolution, 428 

 Encasement, 124 

 Endocrine glands, 163, 211, 214 

 Environment, action upon the germ cells. 



