478 



PROLIFICNESS. 



INDEX. 



BAFFLES. 



Prollficness, increased by domestica- 

 tion, ii. 158. 



Protozoa, reproduction of the, ii. 371. 



Prunus armeniaca, i. 365, 366. 



Primus avium, i. 368. 



Prunus cerasus, i, 368, 399. 



Prunus domestica, i. 366. 



Prunus insititia, i. 366—368. 



Primus spinosa, i. 366. 



Prussia, wild horses in, i. 63. 



Psittacus erithacus, ii. 138. 



Psittacus macoa, ii. 138. 



Psophia, general sterility of, in cap- 

 tivity, ii. 140. 



Ptarmigan fowls, i. 240. 



Pulex penetrans, ii. 265. 



Pumpkins, i. 380. 



Puno ponies of the Cordillera, i. 54. 



Pusey, Mr., value of cross-bred sheep, ii. 

 99 ; preference of hares and .rabbits 

 for common rye, ii. 218. 



Putsche and Vertuch, varieties of the 

 potato, i. 350. 



Puvis, effects of foreign pollen on 

 apples, i. 432 ; supposed non-varia- 

 bility of monotypic genera, ii. 253. 



Pyrrhula vulgaris, ii. 217; assumption 

 of the hen-plumage by the male, in 

 confinement, ii. 141. 



PrRRHUS, his breed of cattle, ii. 186. 



Pyrus, fastigate Chinese species cf, ii. 

 266. 



Pyrus acerba, i. 369. 



Pyrus aucuparia, ii. 216. 



Pyrus communis, i. 372, 401. 



Pyrus malus, i. 369, 401. 



Pyrus paradisiaca, i. 369. 



Pyrus prcecox, i. 370. 



Quagga, previous impregnation by, i. 

 435. 



Quatrefages, A. de, on the burrowing 

 of a bitch to litter, i. 28; selection 

 in the silkworm, i. 317 ; development 

 of the wings in the silkmoth, i. 320, 

 ii. 288 ; on varieties of the mulberry, 

 i. 354 ; special raising of eggs of the 

 silk-moth, ii. 181 ; on disease of the 

 silkworm, ii. 213 ; on monstrosities 

 in insects, ii. 257, 385 ; on a change in 

 the breeding season of the Egyptian 

 goose, ii. 294 ; fertilisation of the 

 Teredo, ii. 356 ; tendency to simi- 

 larity in the best races, ii. 227 ; on 



his " tourbillon vital," ii. 35 ; on the 



independent existence of the sexual 



elements, ii. 352. 

 Quercus cerris, i. 386. 

 Quercus robur and pjedunculata, hybrids 



of, ii. 111. 

 Quince, pears grafted on the, ii. 246. 



Rabbits, domestic, their origin, i. 107- 

 109 ; of Mount Sinai and Algeria, i. 

 109; breeds of, i. 109-116; Hima- 

 layan, Chinese, Polish, or Russian, i. 

 112-115, ii. 75; feral, i. 116-120; 

 of Jamaica, i. 116; of the Falkland 

 Islands, ibid. ; of Porto Santo, i. 

 117-120, ii. 81, 269; osteologieai 

 characters of, i. 120-134; discussion 

 of modifications in, i. 135-140; one- 

 eared, transmission of peculiarity of, 

 i. 456 ; reversion in feral, ii. 6 ; in 

 the Himalayan, ii. 15 ; crossing of 

 white and coloured Angora, ii, 70; 

 comparative fertility of wild and 

 tame, ii. 90 ; falsified experiments in 

 interbreeding of, ii. 100 ; high-bred, 

 often bad breeders, ibid. ; selection 

 of, ii. 188 ; white, liable to destruc- 

 tion, ii. 215; effects of disuse of 

 parts in, ii. 288 ; skull of, affected 

 by drooping ears, ii. 291 ; length of 

 intestines in, ii. 293 ; correlation of 

 ears and skull in, ii. 316, 317 ; varia- 

 tions in skull of, ii. 343 ; periosteum 

 of a dog producing bone in, ii. 

 365. 



Race-horse, origin of, i. 56. 



Races, modification and formation of, 

 by crossing, ii. 73-77 ; natural and 

 artificial, ii. 232 ; Pouchet's views on 

 plurality of, i. 2; of pigeons, i. 217- 

 222. 



Radclyffe, W. F., effect of climate 

 and soil on strawberries, i. 376 ; con- 

 stitutional differences in roses, i. 

 391. 



Radishes, i. 345 ; crossing of, ii. 68 ; 

 varieties of, ii. 202. 



Radlkofer, retrogressive metamor- 

 phosis in mosses and algae, ii. 354. 



Rafarin, M., bud-variation and rever- 

 sion, i. 403. 



Raffles, Sir Stamford, on the crossing 

 of Javanese cattle with Bos sondaicus, 

 ii. 191. 



