408 



INDEX. 



PENGUIN. 

 Penguin, wing of, ii. 214. 

 Pentateuchal cosmogony, ii. 187. 

 Personal appearance and habits, i. 109, 



in. 

 Petals, fertilisation of flowers by insects 

 which gnaw the, iii. 285. 



Petrels, nestling, with exotic seeds in 



their crops, ii. 147, 148. 

 Pheasant, female, coloration of the, 

 iii. 124. 



Philadelphia, Academy of Natural 

 Sciences of, election of C. Darwin a 

 correspondent of, ii. 307. 



Phillips, Professor John, ' Life on the 

 Earth,' ii. 349, 358, 373. 



note on, ii. 309 note ; lectures 



at Cambridge, ii. 309, 315. 



Philosophical Club, ii. 42. 



Phocse, descended from a terrestrial 

 Carnivore, iii. 163. 



Photograph-albums received from Ger- 

 many and Holland, iii. 225. 



Phyllotaxy, iii. 51, 52. 



Physical conditions, constancy of species 

 under diversity of, ii. 319 ; effects of, 

 ii. 320 ; increasing belief in the direct 

 action of, ii. 390. 



Physicians, Royal College of, award of 

 the Baly medal by the, iii. 224. 



Physiological Society, establishment of 

 the, iii. 204. 



Physiology, importance of vivisection 

 in the study of, iii. 202, 205. 



Pictet, Professor F. J., partial agree- 

 ment with Darwin, ii. 184; review 

 of the ' Origin ' in the ' Bibliotheque 

 Universelle,' ii. 297. 



Pictures, taste for, acquired at Cam- 

 bridge, i. 49. 



Picus, special adaptation of, iii. 158. 



Pigeon-fanciers, ii. 281. 



Pigeon-fancying, ii. 48, 51. 



Pigeons, ii. 46 ; importance of work 

 on, ii. 84 ; modification of nasal 

 bones in, ii. 378 ; vertebrae of, ii. 

 350 ; wing-bars of, ii. 1 1 2. 



Pigs, black, in the Everglades of Vir- 

 ginia, ii. 300. 



Finguicula, power of movement of the 

 leaves of, iii. 324; digestion in, iii. 



324- 

 " Tipes " in the chalk, ii. 332. 



POLLEN. 



Pithing of lassoed cows, by theGauchos 

 of La Plata, iii. 245. 



P/auan'a, Terrestrial, ii. 36 ; mimetic 

 coloration of, iii. 71. 



Ptanorbis, Professor Weismann on the 

 species of, in the freshwater limestone 

 of Steinheim, iii. 156. 



Plantago, two forms of, iii. 305. 



Plants, American Alpine, ii. 61 ; angi- 

 ospermous, in cretaceous beds of the 

 United States, iii. 248 ; Antarctic 

 fossil, ignorance of, iii. 247 ; Arctic 

 fossil, importance of, iii. 247 ; Aus- 

 tralian, iii. 248 ; British Terrestrial 

 and Aquatic, sexual characteristics 

 of, iii. 304 ; causes of variability in, 

 iii. 342-346 ; climbing, i. 92 ; iii. 

 311-317; garden, difficulty of nam- 

 ing, iii. 269 ; heterostyled, poly- 

 gamous, dioecious and gynodioecious, 

 iii. 295 ; higher, impulse to the 

 development of, given by flower- 

 frequenting insects, iii. 248 ; insec- 

 tivorous, i. 96 ; in the Silurian, iii. 

 248 ; lignite, of Kerguelen Land, iii. 

 247 ; mimetic, iii. 70 ; naturalised 

 in Australia, ii. 259 ; power of move- 

 ment in, i. 98 ; iii. 329-338 ; protean 

 or polymorphic forms of, iii. 188 ; 

 self-impotent, iii. 75 ; supposed 

 movement of, from the north, iii. 

 247 ; sudden development of the 

 higher, iii. 248. 



Platanthei'a Hookeri and hyperborca, 

 fertilisation of, iii. 272 note. 



Platysma muscle, contraction of, under 

 feeling of horror, iii. 142, 143. 



Pleasurable sensations, influence of, in 

 Natural Selection, i. 310. 



Plinian Society, i. 39. 



Pliocene climate, ii. 135. 



Poetry, taste for, i. 33 ; failure of taste 

 for, i. 100. 



Poinscttia, nature of petals of, iii. 

 285. 



Poisons, experiments with, on Drosera, 



iii. 3*9, 323- 

 Pollen, conveyance of, by the wings of 



butterflies and moths, iii. 284. 



, differences of the, in the two 



forms of cowslip, iii. 297, 298 ; in 



the two forms of Primrose, iii. 298. 



