352 



INDEX 



Sageret, on grafts, il. 24 



BalmonB, males fighting, and hooked 



jaws of, i. 132 

 Salt water, how far injurious to seeds, 



ii. 160 

 not destructive to land-shells, ii. 



196 

 Salter, Mr., on early death of hybrid 



embryos, ii. 29 

 Saurophagus sulphuratus (tyrant fly- 

 catcher), i. 246 

 Schacht, Prof., on Phyllotaxy, i. 296 

 Schiodte, on blind insects, i. 198 



, on flat-fish, i. 317 



Schlegel, on snakes, i. 204 



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



294 

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



orchids, ii. 13 

 , on the crossing of varieties of 



verbascum, ii. 44 

 Sea-water, how far injurious to seeds, 



ii. 150 

 not destructive to land-shells, ii. 



196 

 Sebright, Sir J., on crossed animals, 



i. 47 

 Sedgwick, Prof., on groups of species 



suddenly appearing, ii. 83 

 Seedlings destroyed by insects, i. 106 

 Seeds, nutriment in, L lit 



, winged, i. 207 



, means of dissemination, i. 266- 



267, 278; ii. 154 

 , power of resisting salt water, ii. 



150-151 

 , in crops and intestines of birds, 



ii. 154-155 



, eaten by fish, ii. 154, 184 



, in mud, ii. 184 



, hooked, on islands, ii. 190 



Selection of domestic products, i. 57 

 , principle not of recent origin, 1. 



62 



Selection, anconscious, i. 62-63 



, natural, i. 120 



, sexual, i. 131 



, objections to term, i. 121-122 



natural, has not induced sterility, 



ii. 26 

 Sexes, relations of, i. 131-132 

 Sexual characters variable, i. 217 



selection, i. 131 



Sheep, Merino, their selection, i. 59 

 , two sub-breeds, unintentionally 



produced, i. 64 



, mountain varieties of, i. 115 



Shells, colors of, i. 191 



, hinges of, i. 266 



, littoral, seldom imbedded, ii. 64 



, fresh -water, long retain the 



same forms, ii. 124 



, fresh-water, dispersal of, ii. 182 



, of Madeira, ii. 189 



, land, distribution of, ii. 189 



, land, resisting saltwater, ii. 196 



Shrew-mouse, ii. 228 

 Silene, infertility of crosses, iL 19 

 SUIiman, Prof., on blind rat, i. 197 

 Sirenia, their affinities, ii. 115 

 Sitaris, metamorphosis of, ii. 262 

 Skulls of young mammals, i. 274; ii. 



246 

 Slave-making instinct, i. 364 

 Smith, Colonel Hamilton, on striped 



horses, i. 226 

 , Mr. Fred., on slave-making ants, 



i. 365 



, on neuter ants, i. 388 



Smitt, Dr., on the Polyzoa, i. 828 

 Snake with tooth for cutting through 



egg-shell, L 361 

 Somerville, Lord, on selection of sheep. 



i. 59 

 Sorbus, grafts of, ii. 25 

 Sorex (shrew-mouse), ii. 228 

 Spaniel, King Charles's breed, i, 63 

 Specialization of organs, i, 178 



