506 



Index 



Summer eggs, 382 

 Sumner, 249-50, 333 

 Sun dew, see Drosera 

 Sunfish, 358; ill. 359 

 Suprarenal, see Adrenal 

 Survey, IT. S. Biological, 87; 

 geolographical distribution, 

 162 



life zones of N. A., 163 et seq. 

 U. S. Geological, 38 

 Surveys, state, 37; territories, 38 

 Survival, see Selection 

 Swainson, 31, 37 

 Swamping effect of crossing, 252 

 Swarming, bees, 317 

 Swarms, see Animals, aquatic 

 Symbiosis, see Algae 

 Syndactylism, see Man 

 Synura, odors in water, 378; ill. 



378 



Syphilis, diagnosis, 445-7 

 extent, 444-5 

 prevention, 446-7 

 Wassermann test, 445-7 

 see Blood serum 



Tahiti, snails, isolation, environ- 

 ment, 255-6 

 Tanager, see Scarlet 

 Tanner, quoted, 156; see Sounding 

 Tapeworm, control, 464; life his- 

 tory, 463-4 

 Tar pools, contents, 148; origin, 



147; ill. 148-9 

 Tarsier, 144-5; ill. 144 

 Tashiro, 318 

 Taste, see Water 

 Teeth, bird, embryo, 132 

 fossil, 131-2 

 crossopterygian, 123 

 mammalian, 134 

 Stegocephala, 123 

 Temperature, deep sea; see Birds, 



Thermometers 



Tension line, see Great Plains 

 Tern, homing instinct, 320; see 



Arctic 

 Terrapin, diamond-back, value, 



culture, 437 



Tetanus, 444, 448; see Serum 

 Tevis, 413 



Texas fever, see Tick 

 Thayer, 348 



Thermometers, deep sea, 366-8 

 Thespesius, 127 



Thinopus, see Amphibia, foot- 

 prints 



Thompson, see Kelvin 

 Thought, 319, 325 

 Thyroid gland, internal secretion, 



320-3 



Thyroidin, see Biological remedies 

 Tick, cattle, life history, 407-8 

 control, damage, 409 

 ill. 408 

 Tigers and marsupials, 186; see 



Smilodon 



Tilefish, destruction, 119 

 Timberland lawsuit, see Cowles 

 Timberline, 172; ill. 168 

 Tissue growth, 200-1; ill. 199 

 Titmice, distribution, 177 

 Tooth enamel, pattern; see Teeth 

 Torry, 63, 65; Botanical Club. 65 

 Tower, 81, 245-6, 249 

 Tow-nets, 370; ill. 371 

 Townsend, C. H., 63 

 Townsend, J. K., 34, 54 

 Toxin, diphtheria, effect on brain, 



324 



Trachoma, 475 

 Tracks, see Dinosaur 

 Training school for feeble-minded, 



see New Jersey 

 Transition zone, 175-6; ill. 174' 

 Transpiration, 299 

 Transport of animals, see Boa con- 

 strictor, Crocodile, Mon- 

 keys, Polar bear, Puma, 

 Squirrel, Wolves 

 Trawling apparatus, 363-4, 369- 



70; ill. 369 



Tree-hopper, see Mimicry; ill. 341 

 Tree sparrow, see Sparrow 

 Trembley, 192, 194 

 Trench foot, 449; fever, 449 

 Treponema, see Syphilis 

 Trial and error, 305-6 

 Triassic period, mammals, 136 

 Triceratops, 184; brain, 127; ill. 



128 



Trichina, cause of disease, 461 

 life history, 461-3 

 ill. 462 



see Eat, parasite 

 Trichocysts, 94 

 Trichodina, 92 

 Trilobites, age of, ill. 117 

 Trochosphsera, 105 

 Trochophore larva, 105; ancestral, 

 106 



