INDEX. 



537 



Designed action in animals, scx). 

 Devonic period, 77, 91, 101, 172, 184, 



186, 188, 362, 415, 420, 422. 

 Diadectidae, 89. 

 Diadiaphorus, 359. 

 Dibamidae, 123. 

 Dicrocerus, 315. 

 Didelphodus, 335. 

 Didytiiuon squantttlosiuii, 220. 

 Digits, number of, 309. 

 Dimorphodon, 120. 

 Dimya, 267. 



Dinocerata, 314, 315, 356. 

 Dinosauria, 98, 114, 116, 120, 121, 122, 



304. 372. 

 Dioplotherium, 330. 

 Diplarthra, 84, 128, 133, 136, 143, 144, 



146, 293, 295. 297, 300, 302, 305, 306, 



312, 313, 320, 332, 360, 403. 

 Diplogenesis, 12, 441, 443, 470. 

 Dipneusta, 8g. 

 Dipnoi, 89, 99. 

 Diprodontidae, 143. 

 Diptera, 203, 204. 

 Dipus, 361. 

 Disciniscus, 177. 

 Dissacus, 302. 

 Disuse in Mammalia, 352. 

 Dog-opossum, 22. 

 Dohrn, 204. 



Dolichotis, 361 ; D. patachonica, 305. 

 Dollo, 121. 

 Domestic fowls, 21. 

 D'Orbigny, 417. 

 Dorypterus, 103. 

 Driesch, 457. 



DuBois, Dr., 159, 168, 169. 

 DumSril, 58. 



Dynamical evolution, 524. 

 Dyscophidae, 70. 

 Dysodus, 59, 146. 



Echidermata, 368. 



Echinodermata, 80, 81, 82, 83. 



Echinus, 457. 



Ectal mastication, 318. 



Edaphoceras, 186. 



Edentata, 127, 132, 133, 138, 141, 143, 



145, 186, 195, 303, 305, 310, 356, 360. 

 Education, 505. 

 Eels, 103. 



Effect of feeding on color in birds, 

 238. 



Effect of light on the colors of flat- 

 fishes, 238. 



Effects of consciousness, 509. 



Efficient cause, 10, 497, 498. 



Eigenmann, C, 244. 



Eimer, 23, 45, 252, 254, 527. 



Elasmobranchii, 91, 94, 95, 99. 



Elasmotherium,"3i4. 



Elbow-joint, of CcrTnis elaphus, ofjb; 

 of chimpanzee, 295 ; of horse, ab- 

 normal, 278; human, abnormal, 277. 



Elephas, 145, 330. 



Elliot, D. G., 531. 



Elosia nasus Licht, 68. 



Embolomeri, 88, 109, iic. 



Embryology, 202, 209, 401. 



Embryonic variations, 444. 



Emphytogenesis, 486. 



Endoceras, 186. 



Endolobus, 186; E. excavatutn, 417. 



Energies, specific, 480. 



Energy, 448, 451, 506, 507, 512; synop- 

 tic table of, 484 ; anagenetic, 478, 

 484; definition of, 473; of evolu- 

 tion, 473 ; catagenetic, 479, 484 ; cor- 

 relation of, 506 ; inorganic, 475, 484, 

 512 : composition of, 490. 



Engystomidae, 70. 



Enhydra, 352. 



Ental mastication, 318. 



Entoconcha mirabilis, 213. 



Environment, physical influences of, 

 436, 452, 475. 



Eocene, 61, 104, 135, 138, 139, 142, 145, 

 145, 147, 150, 154, 155, 173, 205, 304. 



365- 377- 

 Epigenesis, 13. 

 Epihippus, 147, 148. 

 Epilasmia, 107. 

 Epilepsy in Cavia, 430. 

 Equidae, 313. 

 Equilibrium, 508. 

 Equus, 145, 149, 359 ; E. caballus, 84, 



300. 

 Ergogenesis, 486. 

 Erinaceus, 127. 

 Erismatopterus, 104. 

 Eryops inegacepaliis, 371. 

 Esquimaux, 61, 153. 



