654 



INDEX 



Vertebrae, ligaments of, 184 



ossification stage, 182 



sclerotomes of, 178 

 Vertebrae cervical, defects of, 604 

 Vertebral arch, 180 



articular process of, 182 



spinous process of, 182 



transverse process of, 182 

 Vertebrate, the definition of, 450 



differentiation of the anterior end of, 450 



nervous system, see Nervous system, ver- 

 tebrate 



Vesical fissure, 432 

 Vesicle, auditory, 582 



blastodermic, 134 



optic, 140, 564 

 Vesicles, brain, 454, 473 



seminal, 416 

 Vestibular ganglion cells, 589 



membrane (of Reissner), 587 



nerve, 589 



part of acoustic (auditory) nerve, 462 

 descending root of, 462 



pouch, 583 

 Vestibule, 460 

 Vestibulum vaginae, 424 

 Vicq d'Azyr's bundle, 537 

 Vignal, concerning the myelin sheath, 494 

 Villi, chorionic, no, 118 



fastening, 123 



floating, 123 

 Visceral mesoderm, 71, 83 



musculature, see Musculature, visceral 



neurones, sympathetic, 451 



or splanchnic structures, 458 

 Visual area of pallium, 470, 557, 558 



cortex, 557 

 Vitelline arteries, 101, 241 



circulation, 220 



duct, 113 



membrane, n 



plexus, 217 



veins, 102, 218 

 Vitellus, n 

 Vitreous, 575 



humor, 575 

 Voral cords, superior, or false, 361 



true, 361 



Volar arch, superficial, 248 

 Voluntary muscle, striated, histogenesis of, 307 



origin of, 293, 294 

 Vomer, 192, 194 

 Von Baer, XIII 



Von Baer, concerning cell differentiation, 51 



Von Baer's law, 384 



Von Loewenhoek, concerning the discovery of 



the spermatozoon, XIII 

 Von Spec's embryo, 86, 136 



Waldeyer, concerning site of fertilization, 38 



" Waters," the, 113 



Webs between digits, 151 



Weismann, concerning fertilization, 38 



Wharton's jelly, 129 



Wheeler, diagram showing amitosis, 4 



White columns (see also Dorsal funiculus), 503 



matter of cerebral hemispheres, 554 

 of cord and segmental brain, 504 



ramus communicans, 487, 492 

 Wiedersheim, concerning the mammary gland, 



443 

 concerning duplicity with double gastru- 



lation, 600 

 concerning the fertilization of eggs of 



sea-urchin, 34 

 Wilson, J. F., concerning intermediate region 



in the cord, 524 



concerning intermediate plate, 524 

 Winslow, foramen of, 378 

 Wirsung, duct of, 351 



Wlassak, concerning the myelin sheath, 494 

 Wolffian duct, 386 



ridge, 388 

 "Wolf's snout," 212 



theory of epigenesis, XIII 

 Woods, concerning sex cells, 404 

 Wyder, concerning site of fertilization, 38 



X-chromosome, 28 

 Xiphoid process, 186 



malformations of, 597 

 Xiphopagus, 597 



Y-chromosome, 29 



Yolk, comparison of amount of in forms of 



gastrulation, 57, 64 

 entoderm, in Amphibians, 54 

 in Birds, 60 

 in Mammals, 66, 68, 81 

 granules, 12 



lack of, in Mammals, 104 

 plug, 54 

 sac, 99, 135 



formation of in chick, 99 

 function of, 100 

 in Mammals, 104, 106 

 in man, 87, 113 



