Index 



Sexual dimorphism, 51, 297-344 



Sexual selection, theory of, 299-321 



Shaheen, 251 



Shamrock, 274 



Sheathbill, 191 



Sheep, 95, 266, 267, 283, 357, 372 



Sheldrake, 109, 129 



Shikra, 235, 236 



Shoveler, 290 



Shrew, 180, 216 



Sidgwick, 28 



Sidney, 5, 49 



Sika deer, 120 



Silver- washed fritillary butterfly, 103 



Siskin, 127, 244 



Skua, Arctic, 44, 362 



Skua-gull, 191 



Skunk, 1 86, 217, 221 



Skylark, 315 



Slug, 49, 185 



Smith, Adam, 28 



Snake, 185, 197, 198, 217, 220, 223- 

 6, 247, 356 



Snap-dragon, 268, 272 



Snipe, 69, 327 



Sodium sulphate, 151 



Somatic variations, 106-10. 



" Some Indian Friends and Ac- 

 quaintances," 225, 358 



Sorrel, 274 



Sparrow, 213, 241, 341, 342 



Java, 99, 100 



Sparrow-hawk, 2359 243 



Spatula clypeata, 290 



Spavin, 332 



" Species and Varieties," 69, 77, 84, 

 87, 118 



Species, definition of, 89 



Species, elementary, 77, 78, 87-9 



Spencer, 3, 15, 16, 28, 38, 151 



Spider, 269, 272 



Sporaginthiis amandava, 311 



Sports, 41, 43, 66, 75, 85, 135 



Squirrel, 101, 186, 243 



Stag, 325 



Irish, 67 



Standfuss, 155 



Stanley crane, 248, 279 



St Hilaire, T. G., 2, 356 



Stick insect, 209 



Stictoptera annulosa, 104 



Stoat, 119, 190, 290 



Stolzmann, 327-9, 342, 343 



Stonechat, 353 

 Stork, 247, 282 

 "Strand Magazine," 64 

 Strix flammea, 289 

 Struggle for existence, 31, 32, 48 

 for nourishment, 167 



Suchetet, A., 126, 130 



Sula capensis, 282 



S. serrator, 282 



Sunbird, 324 



Surniculus lugubris, 235, 243 



Survival of the fittest, 32 



Survival value, 33, 34 



Swallow, 250, 251, 279, 361 



Swallow-shrike, 281 



Swallow-tail butterfly, 179 



Swan, 100 



Swift, 243, 250 



Swimming bladder of fishes, 36, 37 



Sycalis flaveola, 244 



Syrphidct) 178 



TACHYCINETA LEUCORRHOA, 361 



Tadorna cornuta, 129 



T. tadornoideS) 129 



Tails, 62, 64 



Tait, Mr, 356 



Tanager, 281 



Tapir, 42 



Tasmanian devil, 282 



Teal, 290, 316 



Teasel, fuller's, 58 



Teeth, molar, 105 



Tegetmeier, Mr, 307 



Tern, 62, 278 



Terpsiphone paradisi, 202, 298, 304, 



3i6, 3 2 4 

 Tetraogallus, 337 

 Tetraonida, 125 

 Tetrapteryx paradisea^ 249 

 Tetrao tetrix, 129 

 T. urogallus, 129 

 Thamnobia cambayensis, 202, 275 

 T.fulicata, 202, 378 

 Thayer, Mr Abbot, 184-7 

 Thompson, Seton, 354 

 Thomson, 103, 136, 14$, 166, 306, 



326, 340 



Throat disease, 353 

 "Through Southern Mexico," 197, 



245 

 " Through the Heart of Patagonia," 



359 



399 



