838 



INDEX 



Tissues, 107 



Toads, 666. 681, 685 



Tongue, 313-314 



bird, 735, 742 



frog, 694, 697 



human, 313 

 Tonsils, 206, 213, 235 

 Tooth shell, 631, 633, 635 

 Tortoises, 718, 724 

 Touch, 309-311 



honeybee, 620 

 Trachea, 235-237, 603, 605, 608, 609, 618 



human, 182, 206 

 Tracheoles, 608, 609, 618 

 Tragus, 318, 319 

 Transfusion, 210, 211 

 Transpiration, 59-61 

 Trematoda, 498, 508-513 

 Trembley, A., 477, 478 

 Triceps muscle, 158, 159 

 Trichina, 96, 98, 526, 527, 529, 797 

 Trichinella spirella, 98 



life history, 527, 528 



methods of exposure to. 526 

 Trichinosis. 100. 526. 528 

 Trichocysts, 426, 427, 449, 450 

 Trichoptera, 593 

 Trichospherium, 332 

 Tricladida, 507 

 Trilobites, 574. 575 

 Triturus, 166, 683, 688 



torosiis, 684 



viridescens, 261, 263, 265, 414, 684. 686 

 Trochelminthes, 538 

 Trochophore, 533, 539, 546-549, 555, 565, 



571 

 Troglotrema sahnincola, 511 

 Tropisms, 288 

 Trout, 666 



early stages, 671 



reproduction, 676, 677 



scales, 672 

 Truncus arteriosus, 699, 700 

 Trunk fish, 670 

 Trypanosoma gambiense, 98, 436, 437 



lewisi, 436 



rhodesiense, 437 

 Trypanosomes. 98, 436, 437 

 Trypanosomiasis. 436, 437 

 Trypsin, 187, 193, 268 

 Trypsinogen, 191, 268 

 Tsetse fly, 98, 436. 437 

 Tuatera, 717, 799 

 Tube feet, 652, 653, 655, 656, 658 

 Tubifex tiibifex, 565 

 Tubipora, 466 

 Tularemia. 629 

 Tuna, blue-fin or marlin, 77 

 Tunicates, 662, 664, 798 

 Tupaia tana, 318 

 Turbellaria, 498, 499, 501, 502 



Turbinate bones, 206, 234, 315 

 Turtles, 80, 666, 713, 718, 724-726, 799 



box, 725 



loggerhead, 77 



musk, 714 



painted, embryo, 715 



snapping, 714, 715, 725 



soft-shelled, 726 



spotted, 714 

 Tusks, 763, 764 

 Twilight eye, 323 

 Twins, fraternal, 384, 386 



identical, 385, 386, 402, 410 



Siamese, 385 

 Tympanum, 316, 317, 375, 602, 611, 720, 



745 

 Typhosole. 560. 561 

 Tyrannosaurus, 727 



U 



Ulna, 148, 150-152, 725 



Ultrasonic sounds, 318, 319, 759 



Umbilical cord, 379, 382, 384, 385 



Umbo, 640 



Ungulata, 763 



Urea, 78, 126, 198, 243. 251. 252 



Ureters. 247, 248, 249, 251. 697, 703, 709, 



710 

 Urethra, 247. 251. 340, 343. 346 

 Uric acid. 198. 243. 251 

 Urinary bladder, 340, 343, 346, 379 



bird, 744 



frog. 697 



reptile, 723 

 Urinary system, 247-251 



human. 248 

 Urine, 247, 251-253, 343 



formation of, 250 

 Urochorda. 664 

 Urodela, 683-685 

 Uropods, 585 

 Urostyle. 693 

 Uterus, 344, 346-351, 384 



frog, 710, 711 



human. 379, 380. 383 

 Utricle, 316, 317, 320, 678 

 Uvula, 206 



Vacuole. 33, 35. 53 



contractile. 428, 432, 438, 541 



food. 428, 438 

 Vagina, 344, 346, 347, 350. 612 

 Vagus nerve. 184, 185, 219, 238-240, 297, 



305 

 Vallate papillae, 314 

 Vas deferens. 340, 342. 516. 611 

 Vasa efTerentia. 710 

 Vasoconstrictor nerves, 200 



