INDEX. 



485 



373; sides of, 373 ; roof of, 374 

 —376 

 Third nerve of chick, 1 29 

 Third ventricle of mammalia, 372 

 Throat of rabbit, formation of, 



331 

 Thyroid body, of chick, 181 ; 



mammalia, 418 

 Tibia of chick, 234 

 Tongue of chick, 282 

 Trabeoulsaof chick,236, 239 — 241 

 Trachea of chick, 176, 177 ; mam- 

 malia, 418 

 Tuber cinereum, 373 

 Turbinal bouea of chick, 246 

 Tympanic cavity of chick, 166 ; 

 membrane of chick, 166 ; cavity 

 of mammalia, 397, 418; mem- 

 brane of mainmalia, 397 



U. 



Ulna, of chick, 234 



Umbilical, arteries {see Allantoic); 

 veins {see Allantoic veins); vesi- 

 cle of mammals {see Yolk-sac) ; 

 stalk of chick of third day, 113; 

 cord, 351 



Urachus, 351 



Ureter of chick, 219; mammalia, 



417 



Urethra, mammalia, 417 



Urinogenital organs of mam- 

 malia, 4 1 4 — 4 1 7 ; sinus of mam- 

 malia, 415 — 417 



Uterine crypts, 350 



Uterus, mammalia, 415 



Utriculus of mammalia, 393 — 398 



Uvea of iris, chick, 144 



V. 



Valve of Vieussens, of birds, 369 ; 



of mammals, 370 

 Vagina mammalia, 415 

 Vagus nerve (see Tenth nerve) 

 Vasa efferentia and recta mam- 



maHa, 414 

 Vascular system of chick, 224 — 



230; of second day, 89 — ^94, 102 



— 106 ; of third day, 167 — 170; 

 mammalia, 406 — 413 



Vascular area: of blastoderm ol 

 chick, 27 ; of third day, 1 10 — 

 113; of rabbit's ovum, forma- 

 tion of, 326 



Vas deferens : of cook, 224 ; mam- 

 malia, 415 



Velum meduUffl anterius {see 

 Valve of Vieussens) ; posterius, 



370 

 Vermiform appendix, mammalia, 



419 

 Vena cava, inferior, of chick, 228, 



285 — 290 ; mammalia, 409 — 



4'3 

 VensB cav£e, superior, of chick, 

 286 — 290 ; of mammalia, 409 



—413 



Venffi advehentes of chick, 227, 

 287 — 289 ; revehentes of chick, 

 227, 287 — 289 



Vena terminalis {see Sinus termi- 

 nalis) 



Venous system: of chick, 226 — 

 229, 283 — 290,301 — 303; mam- 

 malia, 409 — 413 



Ventricles of brain of chick of 

 second day, 102; of mammals, 

 117, 121 — 122; of chick, 229 



Ventricular septum, chick, 230, 



257 



Vertebrae of chick, pnmary, 205 

 — 208 ; permanent, 205 — 208 ; 

 bodies of, 207 — 209 



Vertebral arches, osseous, of 

 chick, 207, 210; mammalia, 

 409 



Vertebral artery of chick, 295^ 

 298 



Vertebral column, of chick, 205 — 

 208 ; membranous, 205 — 208 ; 

 secondary segmentation of, 205 

 — 208 ; explanation of do., 205 

 — 206 ; of mammaUa, early de- 

 velopment, ossification of, 400, 

 401 



Vertebrate animal, general struc- 

 ture of, 39 



Vesicle of third ventricle {see 

 Thalamencephalon) 



