INDEX 



623 



Teasing, directions for, 123 



Teats, 486, 506 



Teeth, 17, 444, 509 



Teleostomi, 431 



Telson, 361 



Tendon, 59 



Tentacles, 296, 309, 314, 315, 351 



Tergum, 361 



Testis, see Spermary 



Thalamencephalon, see Dience- 



phalon 

 Thigh, 5 



Thoracic duct, 528 

 Thorax, 361, 483, 486, 506 

 Thread-cell, see Nematocyst 

 Thymus, 447, 507, 519 

 Thyroid, 447, 520 

 Thyroid cartilage, 517 

 Tibia, 51, 504 

 Tibio-fibula, 51 

 Toad, see Bufo 

 Toes, see Digits 

 Tissues, enumeration of, 31 

 Tongue, 8, 17, 445, 509 

 Tongue-cartilage or bone, see Hyoid 

 Tonsil, 507 

 Trachea, 506, 517 

 Trabeculse cranii, 595 

 Transverse process, see Vertebra 

 Trichocyst, 267 

 Triploblastic 311, 322, 332 

 Trochanter, 504 

 Trochlea, 501 

 Trochosphere, 353, 354 

 Trophoblast, 582 

 Trophozoite, 286 

 Trunk, 4, 432, 483 

 Trypsin, 74 

 Tubercle, and Tubercular facet, 498, 



500 



Tuberosity, 501, 503 

 Tunicata, 421 

 Turbinals, 493 

 Tympanic cavity, membrane, and 



ring, 5, 45, 189, 536 

 Typhlosole, 335, 401 



Umbilical cord and umbilicus, 602 



Umbo, 398 



Umbrella, 314 



Unicellular, 231 



UNIO, see Mussel 



Urachus, 602 



Urea, 66, 147 



Ureter, 26 ; and see under various 



types 



Urethra, see Urinogenital canal 

 Uric acid, 66 

 Urinary bladder, 23, 375, 406, 538, 



603 



,, tubules, see Nephridium 

 Urine, 8, 66, 147 

 Urinogenital aperture, 486 



canal, 539, 540 

 ,, duct, 194 



organs, 193, 466, 537 

 ,, organs, development 



of, 591 



Urodeles, 219 

 Uropod, 364 

 Urostyle, 35, 39 

 Uterine crypts, 601 

 Uterus, 540 



,, masculinus, 538 

 Utriculus, 187 



v. 



u 



U 



Ina, 50, 502 



acuole : contractile, 232, 243, 



254, 265, 269 ; food-, 233, 266, 



272 



Vagina, 540 

 Valve : of Vieussens, 529 ; spiral 



445, 515 ; ileo-colic, 515 

 Valves : of heart, 88, 376, 521, 523 ; 



of shell, 396 ; of veins, 89 

 Variation, 216, 225, 292 

 Variety, 225 

 Vascular system, see Blood-vessels, 



Arteries, Veins 

 Vas deferens, see Spermiduct, 



Wolffian duct 



Vasa efferentia, see efferent ducts 

 Veins : Frog, 19, 82 ; Crayfish, 377; 



Mussel, 408 ; Dogfish, 454 ; 



Rabbit, 525 ; embryo Vertebrate, 



590 



