INDEX 



437 



endosperm, 109. 

 energy, conservation of, 6. 

 manifested in life, 4, 5. 

 ,, of chemical affinity, 7. 

 ,, source of, 4, 6, 7, 9. 

 ,, ,, ,, in green plants, 30. 



engrains, 186. 

 entelechy, 11. 

 enteron, 47, 265. 



in Hydra, 115. 

 entomophilous flowers, 111, 353. 

 enucleate eggs, fertilization (see 



merogony). 

 environment, control of, 426. 



influence of, 5, 6, 166, 



182, 183. 



A.E.Wallace on, 390. 



Buffon on, 366, 367. 



Charles Darwin on, 



387, 392. 



Lamarck on, 377 

 379. 



upon development, 

 193. 



germ plasm, 

 159. 



Eocene Epoch, 284. 

 Eohippus, 309, 310, Fig. 154. 

 Ephydatiafluviatilis, gemmules, Fig. 



166. 

 epiblast, 47, 48, 266. 



of Hydra, 115, 118. 

 epicoracoid, 234, Figs. 89, 93. 

 epidermis, 54, Fig. 17. 



of plants, 50, 64, Fig. 26. 

 epigamic ornamentation, 336, 349. 

 epigenesis, 163. 

 Epihippus, 310. 

 epilepsy, in guinea pigs, 1 80. 

 episematic colouration, 342. 

 Epistylis, 40. 



epithelium, 54, Figs. 1618, 28. 

 epochs of earth's history, 284, 285. 

 equatorial plate, 72. 

 Equidse, pedigree of, 307 312. 

 Equus, 309, 311, Fig. 153. 

 eras of earth's history, 284, 285. 

 Esperella lapidiformis, spicules, Fig. 



187. 

 Esperiopsis challengeri, 420, 421, Fig. 



188. 

 ,, pukhella, spicules, Fig. 



187. 

 eucalypts, 331. 



leaves, 280. 



Eudendrium, migration of germ 

 cells, 123. 



Eudorina, 42, 90, Fig. 40. 

 Eurypteridae, 291, Fig. 137. 



,, size of, 405. 



Eutheria, 301. 



first appearance of, 302. 

 evolution, factors of, 365 427. 

 in development, 163. 

 individual, 263. 

 of sex, 81147. 

 progressive, 192, 334. 

 theory and evidence of, 



211364. 

 ,, versus special creation, 



212214, Fig. 82. 



ex-conjugants, in Paramcecium, 93. 

 excretion, 9. 



,, in Amoeba, 17. 

 experiments in heredity, 174, 175, 



194209. 



explosive character of living mole- 

 cule, 18. 

 extinction of groups, 231. 



,, ,, species, Buff on on, 366 

 extracted dominants, 198. 

 ,, recessives, 198. 

 eye-colour, Mendelian inheritance of, 



205. 

 eyes, pineal, 258 260. 



F. 



FACTORS, co-operation of, 208. 

 in development, 192. 

 ,, germ plasm, 206, 207. 

 ,, of organic evolution, 365 



427. 



,, permutations and combina- 

 tions of, 206. 

 faeces, 10. 



families, in classification, 226. 

 Farmer, J. B., 206. 

 fat, 56, Fig. 19. 



feather star, hybridization, 174, 175. 

 ' recapitulation in life- 

 history, 273 275, 

 Figs. 123, 124. 

 feathers, acquisition of, 177. 

 female animal, 114. 



characters, 84, 85, 127. 

 dependence on male, 127. 

 femur, 237. 

 fermentation, 218. 

 fern, life-history, 101105, Figs. 48 



52. 



ferns, dispersal, 321. 

 fertility and cross-fertilization, 352, 



357. 

 test of specific identity, 418. 



