336 



SCHACHT. 



INDEX. 



BQUAliODON. 



Schacht, Prof., on Phyllotaxy, i. 



Shells, fresh-water, long retain the 



270. 



same forms, ii. 117. 



Sehiodte, on blind insects^ i. 172. 



, fresh-water, dispersal of, ii. 



, on flat-fish, i. 290. 



173. 



Schlegel, on snakes, i. 178. 



, of Madeira, ii. 180. 



School, Dr., on the ears of mice, i. 



, land, distribution of, ii. 180. 



268. 



, land, resisting salt water, ii. 



Scott, J.. Mr., on the self-sterility 



187. 



of orchids, ii. 7. 



Shrew-mouse, ii. 218. 



— — , on the crossing of varieties of 



Silene, infertility of crosses, ii. 11. 



verbascuni, ii. 38. 



Silliman, Prof., on blind rat, i. 171. 



Sea-watt r, how far injurious to 



Sirenici, then- affinities, ii. 108. 



seeds, ii. 142. 



Sitaris, metamorphosis of, ii. 252. 



not destructive to land-shells, 



Skulls of young mammals, i. 218 ; 



ii. 187. 



ii. 235. 



Sebright, Sir J., on crossed animals, 



Slave-making instinct, i. 336. 



i. 23. 



Smith, Col. Hamilton, on striped 



Sedgwick, Prof., on groups of spe- 



h rses, i. 200. 



cies suddenly appearing, ii. 77. 



, Mr. Fred., on slave-making 



Seedlings destroyed by insects, i. 



ants, i. 337. 



83. 



, on neuter ants, i. 360. 



Seeds, nutriment in, i. 91. 



Smitt, Dr.. on the Polyzoa, i. 301. 



, winged, i. 181. 



Snake with tooth for cutting through 



, means of dissemination, i. 



egg-shell, i. 331. 



210, 252; ii. 116. 



Somerville, Lord, on selection of 



, power of resisting salt water, 



sheep, i. 35. 



ii. 113. 



Sorbus, grafts of, ii. 19. 



, in crops and intestines of 



Sorex, ii. 218. 



birds, ii. 116. 



Spaniel. King Charles'sbreed,i. 40. 



, eaten by fish. ii. 116, 176. 



Specialisation of organs, i. 152. 



, in mud, ii. 1 75. 



bpeeies, polymorp, ic, i. 51. 



, hooked, on islands, ii. 181. 



, dominant, i. 67. 



Selection of domestic products, i. 



, commou, variable, i. 66. 



31. 



in large genera variable, i. 69. 



, principle not of recent origin, 



, groups of, suddenly appear- 



i. 3.'. 



in g, ii. 77, 82. 



, unconscious, i. 39. 



beneath Silurian formations, 



, natural, i. y7. 



ii. 84. 



, sexu d, i. 107. 



successively appearing, ii. 89. 



, objections to term, i. 99. 



ehauging ,-imultaneously 



natural, has not induced steri- 



throughout the world, ii. Io0. 



lity, ii. 20. 



Spencer, L >rd, on increase in size of 



Sexes, relations of, i. 108. 



cattle, i. 10. 



Sexual characters vaiable, i. 191. 



. Herbert, Mr., on the first steps 



Selection, i. 1U7. 



in differentiation,! 155. 



Sheep. Merino, their selection, i. 36. 



, on the tendency to an equili- 



, two sub-breeds, unintention- 



brium in all forces, ii. 29. 



ally produced, i. 11. 



Sphex. parasitic, i. 336. 



, mountain varieties of, i. 93. 



Spiders, development of, ii. 245. 



Shells, colours of, i. 165. 



Sports in plants, i. 11. 



, hinges of, i. 210. 



fcjprengel, C. C, on crossing, i. 119. 



, littoral, seldom embedded, ii. 



. on ray-florets, i. ISO. 



5b. 



Squ.iLdon, ii. 108. 



