582 



INDEX 



Taxonomy, 15, 74 

 Tendon, 315 

 Termites, 211, 245 

 Testes, 122 

 Testosterone, 362 

 Tetrahymena, 8, 85, 105 

 Theory, 4 

 Thread worms, 154 

 Thrombocytes, 340 

 Thyroid glands, 356 

 Thyrotropic hormone, 364 

 Thysanura, 240 

 Ticks, 205 

 Tiger beetles, 246 

 Tigers, 435 

 Tissue, 70 

 Toads, 382 

 Tomato worm, 213 

 Toothshells, 286 

 Trematodes, 145 

 Trichina worm, 161 

 Trichinella, 161 

 Trichocysts, 102 

 Trichomonas, 96 

 Trilobita, 207 

 Triploblastic animal, 137 

 Trypanosoma, 95 

 Tsetse fly, 95, 257 

 Tumble bugs, 247 

 Tundra, 476 

 Turbellaria, 135 

 Turtles, 384 

 Twins, 28 

 Typhlosole, 172 



Ungulata, 440 

 Urochordata, 305 



Vacuoles, 20 



Vertebrata, 306 



Vinegar eels, 154 



Vitamin research, 6 



Viviparous reproduction, 369, 428 



Voices of insects, 222 



Vultures, 417 



Walking stick (insect), 222, 244 



Walrus, 440 



Warm-blooded animals, 405, 427 



Wasps, 260 



Water fleas, 195 



Water moccasin, 393 



Water vascular system, 291 



Weevils, 249 



Weismann, August, 491 



Whales, 443 



Whirligig beetles, 246 



White blood cells, 87 



Wings of insects, 219 



Wintering of bees, 238 



Woodpeckers, 420 



Worker bee, 227 



Wucheria, 163 



Yellowjackets, 261 



Zoogeography, 16, 459, 556 

 Zoology, branches of, 15 

 Zoology, scope of, 1 

 Zygote, 31 



