484 



SHADDOCK. 



INDEX. 



SIZE. 



Shaddock, i. 355. 



Shailer, Mr., on the moss-rose, i. 405. 



Shan ponies, striped, i. 61. 



Shanghai fowls, i. 237. 



Shanghai sheep, their fecundity, i. 

 101. 



Sheep, disputed origin of, i. 97 ; early 

 domestication of, i. 98 ; large-tailed, 

 i. 93, 102, ii. 269; variations in 

 horns, mamma, and other characters 

 of, i. 99 ; sexual characters of, induced 

 by domestication, ibid. ; adaptation 

 of, to climate and pasture, i. 100, 

 101 ; periods of gestation of, i. 101 ; 

 effect of heat on the fleece of, i. 102, 



103, ii. 268 ; effect of selection on, i. 

 103-105; "ancon"or "otter" breeds 

 of, i. 104; "Mauchamp-merino," i. 



104, 105 ; cross of German and 

 merino, ii. 66 ; black, of the Taren- 

 tino, ii. 212; Karakool, ii. 268; 

 Jaffna, with callosities on the knees, 

 ii. 292 ; Chinese, ii. 306 ; Danish, of 

 the Bronze period, ii. 423 ; polydac- 

 tylism in, i. 459 ; occasional pro- 

 duction of horns in hornless breeds 

 of, ii. 3 ; reversion of colour in, ibid. ; 

 influence of male, on offspring, ii. 45 ; 

 sexual differences in, ii. 49 ; influence 

 of crossing or segregation on, ii. 63, 

 73, 80, 81 ; interbreeding of, ii. 98, 

 99 ; effect of nourishment on the 

 fertility of, ii. 90 ; value of, cross- 

 bred, ii. 99 ; diminished fertility 

 of, under certain conditions, ii. 145 ; 

 unconscious selection of, ii. 198 ; 

 natural selection in breeds of, ii. 210, 

 212 ; reduction of bones in, ii. 228 ; 

 individual differences of, ii. 238 ; 

 local, changes in the fleece of, in Eng- 

 land, ii. 268; partial degeneration of, 

 in Australia, ibid. ; correlation of 

 horns and fleece in, ii. 318; feeding 

 on flesh, ii. 293 ; acclimatisation of, 

 ii. 296 ; mountain, resistance of, to 

 severe weather, ii. 303 ; white, poi- 

 soned by Hypericum crispum, ii. 331. 



Sheep dogs, resembling wolves, i. 24 ; 



mutilated tail inherited, i. 470. 

 Shells, sinistral and dextral, ii. 28. 

 Shirley, E. P., on the fallow-deer, ii. 



81, 99. 

 Shirreff, Mr., new v<*iieties of wheat, 



i. 332, 334 ; on crossing wheat, ii. 



83 ; variability of wheat, i. 410 ; 

 continous variation of wheat, ii. 228. 



Short, D., hybrids of the domestic cat 

 and Felis ornata, i. 47. 



Siam, cats of, i. 46 ; horses of, i. 59. 



Siberia, northern range of wild horses 

 in, i. 56. 



Sichel, J., on the deafness of white 

 cats with blue eyes, ii. 323. 



Sidney, S., on the pedigrees of pigs, 

 i. 447 ; on cross-reversion in pigs, ii. 

 8; period of gestation in the pig, i. 

 77 ; production of breeds of pigs by 

 intercrossing, i. 82, ii. 73 ; fertility 

 of the pig, ii. 90 ; effects of inter- 

 breeding on pigs, ii. 101-102; on the 

 colours of pigs, ii. 195, 214. 



Siebold, on the sweet potato, ii. 209. 



Siebold, Carl von, on parthenogenesis, 

 ii. 353. 



Silene, contabescence in, ii. 149. 



Silk-fowls, i. 242, ii. 42, 44. 



Silk-moth, Arrindy, ii. 296, 303 ; 

 Tarroo, ii. 141. 



Silk-moths, i. 316-321 ; domesticated, 

 species of, i. 316 ; history of, i. 317 ; 

 causes of modification in, ibid. ; 

 differences presented by, i. 317-321 ; 

 crossing of, ii. 76 ; disease in, ii. 213; 

 effects of disuse of parts in, ii. 288 ; 

 selection practised with, ii. 181, 183; 

 variation of, ii. 222; parthenogenesis 

 in, ii. 357. 



Silkworms, variations of, i. 316-318 ; 

 yielding white cocoons, less liable to 

 disease, ii. 330. 



Silver-Grey rabbit, i. 112, 114, 125. 



Simon, on the raising of eggs of the 

 silk-moth in China, ii. 181. 



Simonds, J. B., period of maturity in 

 various breeds of cattle, i. 90; differ- 

 ences in the periods of dentition in 

 sheep, i. 100 ; on the teeth in cattle, 

 sheep, &c, ii. 313 ; on the breeding 

 of superior rams, ii. 180. 



Simpson, Sir J., regenerative power of 

 the human embryo, ii. 358. 



Siredon, breeding in the branchiferous 

 stage, ii. 379. 



Siskin, breeding in captivity, ii. 137. 



Sivatheriwn, resemblance of the, tc 

 Niata cattle, i. 93. 



Size, difference of, an obstacle to cross- 

 ing, ii. 79. 





