506 



Index 



Summer eggs, 382 

 Sumner, 249-50, 333 

 Sun dew, see Drosera 

 Sunfish, 358; ill. 359 

 Suprarenal, see Adrenal 

 Survey, U. S. Biological, 87; 

 geolographical distribution, 

 162 



life zones of N. A., 163 c< 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 



T 



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 



Transjjort 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 



Trochosphffira, 105 



Trochophore larva, 105; ancestral, 

 106 



