SALTER. 



INBEX. 



STAR-PISHES. 



335 



Baiter, Mr., on early death of hybrid 



embryos, ii. 23. 

 Saurophagua sulphuratus, i. 220. 

 Schacht, Prof., on Phyllotaxy, i. 



Schiodte, on blind insects, i. 172. 



, on flat-fish, i. 290. 



Schlegel, on snakes, i. 178. 



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

 268. 



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

 orchids, ii. 7. 



, on the crossing of varieties of 



verbascum, ii. 38. 



Sea-water, how far injurious to 

 seeds, ii. 142. 



not destructive to land-shells, 



ii. 187. 



Sebright, Sir J., on crossed animals, 

 i. 23. 



Sedgwick, Prof., on groups of spe- 

 cies suddenly appearing, ii. 77. 



Seedlings destroyed by insects, i. 

 83. 



Seeds, nutriment in, i. 94. 



, winged, i. 181. 



, means of dissemination, i. 



240,252; ii. 146. 



, power of resisting salt water, 



ii. 143. 



, in crops and intestines ot 



birds, ii. .146. 



, eaten by fish, ii. 146, 176. 



, in mud, ii. 175. 



, hooked, on islands, ii. 181. 



Selection of domestic products, i. 34. 



, principle not of recent origin, 



i. 39. 



, unconscious, i. 39. 



, natural, i. 97. 



, sexualj i. 107. 



, objections to term, i. 99. 



natural, has not induced steri- 

 lity, ii. 20. 



Sexes, relations of, i. 108. 



Sexual characters variable, i. 191. 



selection, i. 107. 



Sheep, Merino, their selection, i. 36. 



•, two sub- breeds, unintention- 

 ally produced, i. 41. 



, mountain varieties of, i. 93. 



Shells, colours of, i. 165. 



, hinges of, i. 240. 



, littoral, seldom embedded, ii. 



58. 



, fresh -water, long retain the 



same forms, iL 117. 



Shells, fresh-water, dispersal of, ii. 



173. 



, of Madeira, ii. 180. 



, land, distribution of, ii. 180. 



, land, resisting salt water, ii. 



187. 

 Shrew-mouse, ii. 218. 

 Silene, infertility of crosses, iL 14. 

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

 Sirenia, their affinities, ii. 108. 

 Sitaris, metamorphosis of, ii. 252. 

 Skulls of yoimg manmials, L 248; 



ii. 235. 

 Slave-making instinct, i. 336. 

 Smith, Col. Hamilton, on striped 



horses, i. 200. 

 , Mr. Fred., on slave-making 



ants, L 337. 



, on neuter ants, i. 360. 



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

 Snake with tooth for cutting through 



egg-shell, i 334. 

 SoraerviUe, Lord, on selection of 



sheep, i. 35. 

 Sorbus, grafts of, ii. 19. 

 Sorex, ii. 218. 



Spaniel, King Charles's breed, i. 40. 

 Specialisation of organs, i. 152. 

 Species, polymoi^hic, i. 54. 



, dominant, i. 67. 



, common, variable, i. 66. 



in large genera variable, i. 69. 



, groups of, suddenly appear- 

 ing, li. 77, 82. 



beneath Silurian formations, 



iL84. 



successively appearing, ii. 89. 



cbanging simultaneously 



throughout the world, ii. 100. 



Spencer, Lord, on increase in size of 

 cattle, i. 40. 



, Herbert, Mr., on the first steps 



in differentiation, i. 155. 



, on the tendency to an equili- 

 brium in all forces, ii. 29. 



Sphex, parasitic, i. 336. 



Spiders, development of, ii. 245. 



Sports in plants, L 11. 



Sprengel, C. C, on crossing, i. 119. 



, on ray-florets, i. 180. 



SqualodoD, ii. 108. 



Squirrels, gradations in structure, L 

 216. 



Staffordshire, heath, changes in, I 

 87. 



Stag-beetles, fighting, i. 108. 



Star-fishes, eyes of, i. 225. 



