DOBELL. 



INDEX. 



DROMEDARY. 



447 



of the guans in captivity, ii. 139 ; 

 fertility of geese in captivity, ii. 

 140 ; white pea-fowl, ii. '626. 



Dobell, EL, inheritance of anomalies of 

 the extremities, i. 458 ; non-reversion 

 to a malformation, ii. 10. 



Dobrizhoffer. abhorrence of incest by 

 the Abipones, ii. 103. 



Dogs, origin of, i. 15 ; ancient breeds of, 

 i. 17, ii. 424; of Neolithic, Bronze 

 and Iron periods in Europe, i. 18, 19, 

 ii. 423 ; resemblance of, to various 

 species of Canidse, i. 21 ; of North 

 America compared with wolves, i. 

 21, 22; of the West Indies, South 

 America, and Mexico, i. 23, 32 ; of 

 Guiana, i. 23 ; naked dogs of Para- 

 guay and Peru, 24, 31 ; dumb, on 

 Juan Fernandez, i. 27 ; of Juan de 

 Nova, i. 28; of La Plata, ibid.; of 

 Cuba, ibid. ; of St. Domingo, ibid. ; 

 correlation of colour in, i. 28, 29 ; 

 gestation of, i. 30, 31 ; hairless 

 Turkish, i. 31, ii. 212 ; inter-crossing 

 of different breeds of, i. 31 ; charac- 

 ters of different breeds of, discussed, 

 i. 34-38 ; degeneration of European, 

 in warm climates, i. 37, 39 ; ii. 267, 

 295 ; liability to certain diseases in 

 different breeds of, i. 37 and note; 

 causes of differences of breeds dis- 

 cussed, i. 39-45 ; catching fibh and 

 crabs in New Guinea and Tierra del 

 Fuego, i. 41 ; webbing of the feet in, 

 ibid. ; influence of selection in pro- 

 ducing different breeds of, i. 42, 45 ; 

 retention of origin 1 habits by, i, 

 191; inheritance of polydactylism 

 in, i. 549 ; feral, ii. 6 ; reversion in 

 fourth generation of, ii. 8; of the 

 Pacific Islands, ii. 64, 205, 393; 

 mongrel, ii. 70; comparative facility 

 of crossing different breeds of, ii. 

 80; fertility of, ii. 88, 134; inter- 

 breeding of, ii. 98-100 ; selection of, 

 among the Greeks, ii. 186, 194; 

 among savages, ii. 191, 192 ; un- 

 conscious selection of, ii. 196, 197 ; 

 valued by the Fuegians, ii. 199, 200; 

 climatal changes in hair of, ii. 268 ; 

 production of drooping ears in, ii. 

 291; rejection of bones of game by, 

 ii 293 ; inheritance of rudiments of 

 limbs in, ii. 306 ; development of 



fifth toe in, ii. 309 ; hairless, de- 

 ficiency of teeth in, ii. 319 ; short- 

 faced, teeth of, ii. 337 ; probable 

 analogous variation in, ii. 341 ; ex- 

 tinction of breeds of, ii. 421. 



Dombrain, H. H., on the auricula, ii. 

 339. 



Domestication, essential points in, ii. 

 400, 401 ; favourable to crossing, ii. 

 88, 89 ; fertility increased by, ii. 89- 

 91, 158. 



Domesticated animals, origin of, ii. 

 144, 145 ; occasional sterility of, 

 under changed conditions, ii. 145, 

 146. 



Donders, Dr., hereditary hyperme- 

 tropia, i. 453. 



Dorking fowl, i. 237, 274 ; furculum of, 

 figured, i. 282. 



Dormouse, ii. 135. 



Double flowers, ii. 151, 152, 155, 156 ; 

 produced by selection, ii. 184. 



Doubleday, EL, cultivation of the fil- 

 bert pine strawberry, i. 376. 



Douglas, J., crossing of white and 

 black game-fowls, ii. 70. 



Downing, Mr., wild varieties of thi 

 hickory, i. 327 ; peaches and n' c- 

 tarines from seed. i. 360, 361 ; orig'n 

 of the Boston nectarine, l. 3f 1 ; 

 American varieties of the peach, i. 

 364 ; North American apricot, i. 

 3b6 ; varieties of the plum, i. 363 ; 

 origin and varieties of the cherry, i. 

 368, 369 ; " twin-cluster pippin i," i. 

 370; varieties of the apple, i. 372; 

 on strawberries, i. 373, 375 ; fruit 

 of the wild gooseberry, i. 378 ; 

 effects of grafting upon the seed, i. 

 472 ; diseases of plum and peach 

 tree, ii. 213; injury done to r.tone 

 fruit in America by the " weevil," ii. 

 217; grafts of the plum and peach, 

 ii. 247 ; wild varieties of pears, ii. 

 248 ; varieties of fruit-trees suitable 

 to different climates, ii. 296. 



Downing, Mr. J., sterility of "hort- 

 horns, ii. 97. 



Draba sylvestris, ii. 147. 



Dragon (pigeon), i. 146, 149. 



"Draijer" (pigeon), i. 164. 



Drinking, effects of, in differen . < li 

 mates, ii. 279. 



Dromedary, selection of, ii. 190 



