INDEX 



657 



Rothney, 214 

 Rotifers, 104 

 Rousselet, C. F., 23 

 Roux, 473-475 

 RubbeU, A., 314 



Russell, Dr ,and Hutchinson, Dr., 

 270 



Sable Island, 115 



Saoculina, 309 



Sack, Albert von, 543 



Salamander, colour change in, 

 38 ; in trees, 139 



' Safly,' 255 



Salmon, 459 



Salt, amphibians and, 148 



Sanderson, Sir J. B., 510 



Scales, amphibian, 61 G 



Sea-cuoumber's defence, 24 



Sea-horse, 69, 422 



Sea-lamprey, 465 



Sea-lions, 415 



Sea-otter on kelp beds, 140 



Seasonal changes in freshwaters, 

 104 



Seasons, Biology of the, 159 



Sea-spider, 69 



Sea-urchin eggs, experiments with, 

 378, 383 ; weapons of, 62 



Seeds, ants and, 272 



Self-advertisement, 36 



Semon, Prof., 160, 603 



Senescence, 443 



Senility, 443 



Sequoia, 153 



Shackleton, 96 



Shaler, Prof., 579 



Shells of Molluscs, 63 



Shelter associations, 290 



Shipley, Dr. A. E., 7, 8, 303 



Shore area, 55 ; physical condi- 

 tions of, 57 ; struggle in, 61 



Shore crab, 451 



Shore, evolutionary significance 

 of, 72 ; fauna, 55 



Shrews, dentition of, 613 



Signalling among Termites, 336 



Signals between sexes, 417 



Simulacra vitse, 481 



Simuhum larva, 136 



Skua and herring -guU, 16 



Slave-making among ants, 354 



Sleep, 494 



Slipper animalcule, 133-134 



Slipper-limpet, 425 



Sloth's hair, alga on, 281 



' Snowshoes' of grouse, 521 



Social bees, evolution of, 341 



Societies, animal, 323 



SoUas, 112 



Soule, CaroUne G., 228 



Southwell, T., 526 



Spalding, 225 



Sparrows in United States, 270 



Species, number of, 10 



Spelseoniscus, 123 



Spencer, Herbert, 97, 400 



Sphex-wasp, 20y, 213 



Spider crabs, masking of, 236 



Spiders, ballooning, 126 



Spider's web, 210 



Sponge, freshwater, 443 



Stager, Dr. R., 139 



Starfish, fecundity of, 133 



Starfish with young, 68 



Starhng, Prof. E. H., 627 



Stickleback's nest, 69 



Stockard, Dr. C. R., 613 



Stone, fauna of a, 134 



Structural coloration, 536 



Struggle among ova, 66 



Struggle for existence, 18, 66 ; 



Darwinian view of, 1 9-20 ; in 



shore area, 61 

 Subterranean animals, 122 

 Sumner, E. B., 470 

 Surinam toad, 121, 424 

 Surroundings, resemblance to, 28, 



31 

 Swooping animals, 124 

 Symbiosis, 295 



Tactile organs, 92 

 Tanganyika, 113 

 Temperature and growth, 396 

 Temperature, influence of, 95 

 Tenacity of life, 151 

 Termites, 333 ; black, 215 

 Tern, nest of White, 149 

 Terrestrial animals, adaptations 



of, 120 ; origin of, 119 ; under 



water, 146 

 TeiTestrial fauna, 117 

 Thienemann, Dr., 165 



