486 



IXDEX. 



Vessels of placenta, 360 363 



Vestibule, chick, 158 



Villi : of human ovum, 335 ; of 

 zona in dog, 347; of subzonal 

 membrane of rabbit, 347 ; of 

 chorion of mammal, 349; of 

 placenta, 360363 



Visceral arches, 245 ; of rabbit, 



.334 

 Visceral arches of chick, 162 167; 



of rabbit, 334; of mammalia, 



402 

 Visceral clefts: of chick, 162 

 167, 281; closure of do., 164; 



of rabbit, 334; of mammalia, 



402, 418 

 Visceral folds of chick, 163 

 Visceral skeleton of chick, 242 



246 

 Visceral vein of chick, 284 290 ; 



of mammalia, 409 413 

 Vitellin, 5 

 Vitelline arteries: of chick, 167, 



293 298, 225; of second day, 



89, 103 

 Vitelline duct of chick, 196, 232 ; 



of mammals, 350 

 Vitelline membrane, 4; of hen's 



.egg, 1315; of mammal, 310 

 Vitelline veins of chick, 84, 226. 



288 290 ; of second day, 92, 



104; in rabbit, 343; of mam- 

 malia, 410 413 

 Vitreous humour of chick, 140, 150 



Viviparous animals, 308 

 Vomer of chick, 246 



W 



"White matter : of spinal cord of 

 chick, 252 ; of brain of mam- 

 malia, 386387 



Wings of chick, 200 



Wolffian body: of chick, 190 

 19.3; of mammalia, 414; of 

 chick of second day, 106 



Wolffian duct of chick, 190, 213 ; 

 of second day, 9495, 106; of 

 mammalia, 414 



Wolffian ridge of chick, inS 



Wolffian tubules of chick, 106, 

 f9i 193> 213 



Yolk of hen's egg, 47 ; arrange- 

 ment of, 6; structure of, 5 



Yolk-sac: of chick, 28 37,277 

 280; of mammals, 327; of 

 marsupials, 352; of rabbit, 353; 

 of human ovum, 355 358; of 

 dog, 358 



Zona radiata, 310; of chick, 15 

 Zonary placenta: histology of, 

 360 ; derivation of, 364 



319 



CAMBRIDGE: PRINTED BV C. J. CLAY, M.A. AND SONS, AT THE UNIVERSITY PRESS. 



