4S6 



SPERMATOPHORES. 



INDEX. 



STRIPES. 



antagonism of growth and reproduc- 

 tion, ii. 379. 



Spermatophores of the cephalopoda, 

 ii. 379. 



Spermatozoids, ii. 356, 357. 



Sphingid^:, sterility of, in captivity, 

 ii. 141. 



Spinola, on the injurious effect pro- 

 duced by flowering buckwheat on 

 white pigs, ii. 331. 



Spitz dog, i. 32. 



Spooner, W. C, cross-breeding of 

 sheep, i. 104, ii. 73, 74, 99 ; on the 

 effects of crossing, ii. 74, 75 ; on 

 crossing cattle, ii. 96 ; individual 

 sterility, ii. 146. 



Spores, reproduction of abnormal forms 

 by, i. 408. 



Sports, i. 397 ; in pigeons, i. 223. 



Spot pigeon, i. 163, 217. 



Sprengel, C. K., on dichogamous plants, 

 ii. 68 ; on the hollyhock, ii. 86 ; on 

 the functions of flowers, ii. 159. 



Sproule, Mr., transmission of hare-lip, 

 i. 466. 



Spurs, of fowls, i. 267 ; development 

 of, in hens, ii. 310. 



Squashes, i. 381. 



Squinting, hereditary, i. 453. 



Squirrels, generally sterile in cap- 

 tivity, ii. 135. 



Squirrels, flying, breeding in confine- 

 ment, ii. 135. 



" Staarhalsige Taube," i. 169. 



Stag, one-horned, supposed heredity of 

 character in, i. 456 ; degeneracy of, 

 in the Highlands, ii. 192. 



Stamens, occurrence of rudimentary, 

 ii. 307 ; conversion of, into pistils, i. 

 389 ; into petals, ii. 386. 



Staphylea, ii. 152. 



Steenstrup, Prof., on the dog of the 

 Danish Middens, i. 18 ; on the ob- 

 liquity of flounders, ii. 28. 



Steinan, J., on hereditary diseases, i. 

 451, ii. 55. 



Stephens, J. F., on the habits of the 

 Bombycidae, i. 294. 



Sterility, in dogs, consequent on close 

 confinement, i. 33 ; comparative, of 

 crosses, ii. 82, 83 ; from changed 

 conditions of life, ii. 130-149 ; oc- 

 curring in the descendants of wild 

 animals bred in captivity, ii. 143 ; 



individual, ii. 146 ; resulting from 

 propagation by buds, cuttings, bulbs, 

 &c, ii. 153 ; in hybrids, ii. 162-165, 

 383, 405, 406 ; in specific hybrids of 

 pigeons, i. 203 ; as connected with 

 natural selection, ii. 169-172. 



Sternum, characters of the, in rabbits, 

 i. 128; in pigeons, i. 177, 184; in 

 fowls, i. 282, 288; effects of disuse 

 on the, i. 180, 184-188. 



Stewart, H., on hereditary disease, ii. 55. 



Stigma, variation of the, in cultivated 

 Cucurbitacese, i. 382 ; satiation of 

 the, i. 434, 435. 



Stockholm, fruit-trees of, ii. 297. 



Stocks, bud-variation in, i. 407 ; effect 

 of crossing upon the colour of the 

 seed of, i. 429 ; true by seed, i. 463 ; 

 crosses of, ii. 71; varieties of, pro- 

 duced by selection, ii. 204 ; reversion 

 by the upper seeds in the pods of, ii. 

 340. 



Stockton, Hough, direct action of 

 pollen, i. 431. 



Stokes, Prof., calculation of the chance 

 of transmission of abnormal peculi- 

 arities in man, i. 449. 



Stolons, variations in the production 

 of, by strawberries, i. 375. 



Stomach, structure of the, affected by 

 food, ii. 292. 



Stone in the bladder, hereditary, i. 452, 

 ii. 55. 



Stonehenge, on maturity of the dog, 

 i. 36 ; inherited effects of injury, i. 

 470; cross between bulldog and 

 greyhound, ii. 65 ; close interbreed- 

 ing of greyhound, ii. 100 ; flr.etness 

 of race-horses, ii. 229. 



Storer, J., pedigree of cattle, ii. 96. 



Strawberries, i. 372-376 ; remark- 

 able varieties of, i. 374, 375 ; haut- 

 bois dioecious, i. 375 ; selection in, ii. 

 184; probable further modification 

 of. ii. 229 ; variegated, effects of soil 

 on, ii. 263. 



Strickland, A., on the domestication 

 of Anser fenis, i. 303 ; on the colour 

 of the bill and legs in geese, i. 304. 



Strict<rnris, i. 192. 



Stripes on young of wild swine, i. 80 ; 

 of domestic pigs of Turkey, West- 

 phalia, and the Zambesi, ibid. ; of 

 feral swine of Jamaica and New 



