INDEX. 



499 



PELARGONIUM. 



ROBINIA. 



Pelargonium, flowers of, 145. 



Poison, similar effect of, on animals and 



, sterility of, 251. 



plants, 484. 



Pelvis of women, 144. 



Pollen of fir-trees, 203. 



Peloria, 145. 



Poole, Col., on striped hemionus, 163. 



Period, glacial, 365. 



Potamogeton, 387. 



Petrels, habits of, 184. 



Prestwich, Mr., on English and French 



Phasianus, fertility of hybrids, 253. 



eocene formations, 328. 



Pheasant, young, wild, 216. 



Primrose, 49. 



Philippi on tertiary species in Sicily, 



, sterility of, 247. 



312. 



Primula, varieties of, 49. 



Pictet, Prof., on groups of species sud- 



Proteolepas, 148. 



denly appearing, 302, 305. 



Proteus, 139. 



, on rate of organic change, 313. 



Psychology, future progress of, 488. 



, on continuous succession of ge- 





nera, 316. 





, on close alliance of fossils in con- 



Q. 



secutive formations, 335. 



Quagga, striped, 165. 

 Quince, grafts of, 261. 



, on em bryological succession, 338. 



Pierce, Mr., on varieties of wolves, 91. 



Pigeons with feathered feet and skin 





between toes, 12. 



R. 



, breeds described, and origin of, 





20. 



Rabbit, disposition of young, 215. 



, breeds of, how produced, 39, 42. 



Races, domestic, characters of, 16. 



, tumbler, not being able to get 



Race-horses, Arab, 35. 



out of egg, 87. 



, English, 356. 



, reverting to blue colour, 160. 



Ramond on plants of Pyrenees, 368. 



, instinct of tumbling, 214. 



Ramsay, Prof., on thickness of the 



, earners, killed by hawks, 362. 



British formations, 284. 



, young of, 445. 



, on faults, 285. 



Pistil, rudimentary, 451. 



Ratio of increase, 63. 



Plants, poisonous, not affecting certain 



Rats, supplanting each other, 76. 



coloured animals, 12. 



, acclimatisation of, 141. 



, selection applied to, 32. 



, blind in cave, 137. 



, gradual improvement of, 37. 



Rattle-snake, 201. 



not improved in barbarous coun- 



Reason and instinct, 208. 



tries, 38. 



Recapitulation, general, 459. 



destroyed by insects, 67. 



Reciprocity of crosses, 258. 



, in midst of range, have to struggle 



Record, geological, imperfect, 279. 



with other plants, 77. 



Rengger on flies destroying cattle, 72. 



, nectar of, 92. 



Reproduction, rate of, 63. 



, fleshy, on sea-shores, 132. 



Resemblance to parents in mongrels and 



, fresh-water, distribution of, 386. 



hybrids, 273. 



, low in scale, widelv distributed, 



Reversion, law of inheritance, 14. 



406. 



in pigeons to blue colour, 160. 



Plumage, laws of change in sexes of 



Rhododendron, sterility of, 251. 



birds, 89. 



Richard, Prof., on Aspicarpa, 417. 



Plums in the United States, 85. 



Richardson, Sir J., on structure of 



Pointer dog, origin of, 35. 



squirrels, 180. 



, habits of, 213. 



, on fishes of the southern hemi- 



Poison not affecting certain coloured 



sphere, 376. 



animals, 12. 



Robinia, grafts of, 262. 



