448 



INDEX 



progress, human, 426, 427. 

 progressive development, E. Cham- 

 bers on, 384. 

 ,, evolution, 334. 



,, cause of, 192. 



Wallace on, 390. 

 ,, series, 232, 234. 



pronuclei, 131, 145, 146, Fig. 64. 

 protandrous, 353, 363. 

 protective resemblance, 337 342. 

 ,, and fluctuating varia- 



tion, 415. 

 ,, ,, natural selection, 



396, 405. 

 proteide, 7, 22. 



Proterotherium, 253, Fig. 109. 

 Proteus, 183. 

 prothallus, of fern, 103. 



,, ,, flowering plant, 108. 



Protista, 38. 



,, dispersal of, 327. 

 ,, immortality of, 161. 

 protogynous, 353. 

 Protohippus, 310. 

 Protophyta, 38, 95. 



, , sexual differentiation in, 



91. 

 protoplasm, 2, 38. 



,, chemical composition, 



22, 23. 



controlling power, 23. 

 energy in, 7. 

 physical properties, 21. 

 selective action, 26. 

 sensitive to stimuli, 188. 

 streaming, 62. 

 Protopterus, 255, 291. 

 Protorohippus, 310, Fig. 153. 

 Prototheria, 301, 302. 

 Protozoa, 38, &c., Figs. 3, 4, 9, &c. 

 ,, non-adaptive characters. 



419. 



,, nuclear reduction, 139. 

 ,, powers of multiplication, 



81. 



sexual differentiation, 89. 

 Prozeuglodon, 318, Fig. 163. 

 prunes, stoneless, 204. 

 Pseudopanax chathamicum, 417. 

 crussifolium, 417. 



ferox, 417. 

 pseudopodia, 15. 

 Pteranodon, 299, Fig. 147. 

 Pteraspis, 290. 

 Pterichthys, 290, Fig. 136. 

 Pterosaur'ia (pterodactyls), 236, 242, 

 299, Figs, 99, 147. 



Fterostylis trulli folia, fertilization, 



362. 



Pteri/yotus osiUensis, Fig. 137. 

 Palchriphylliam crurifolium, 338, 



Fig. 170. 



Punnett, E. C,, 208. 

 purity of gametes, 200, 206. 

 putrefaction, 218. 



Pyrenees, arctic vegetation on, 333. 

 pyrenoids, 32, Figs. 5, 42. 



Q. 



QUADRUMANA, 424. 

 quartz, 24. 



E. 



EABBIT, embryo, 265, Fig. 117. 



shoulder girdle, 234, Fig. 90. 

 racial characters, transmission, 175. 

 radial canals, 120. 

 Eadiolaria, 25, Fig. 3. 

 radius, 237. 



rafts, dispersal by, 324. 

 range in time of animal groups, 284. 

 Ranunculus aquatilis and Ranunculus 



fiederaceus, Lamarck on, 379. 

 rats, 179, 182, 325. 

 recapitulation hypothesis, 265281. 

 ,, ,, anticipated 



by Erasmus Darwin, 372. 

 receptor, 18. 



recessive characters, 197, 207. 

 recognition marks, 337. 

 red blood corpuscles, 52, 53, Fig. 15. 

 ,, clover, robbed by humble bee, 



355, 356. 



Eed Sea, fauna, 323. 

 red snow, 27. 



reduction of chromosomes (reducing 

 division), 132139, 206, 207, Figs. 

 6568. 



regeneration, 167. 

 regression, filial, 210. 

 rejuvenescence, 92. 

 reproduction, 10. 

 Eeptilia, compared with Amphibia, 



294. 

 ,, compared with Mammalia, 



232, 235. 

 fossil, 295299. 

 geological range, 284. 

 giant, 406. 

 limbs, 235. 

 origin, 294, 295. 



