474: 



INDEX. 



Uterus, restoration of the mucous 

 membrane of, after parturition, 454 



Utricle of the labyrinth, 214 



Uvea, 48, 51, 52 



Vagina, 267, 287 



- sphincter of, 287 



double, 347 (note), 422 



Valsalva, humor of, 218 



Valvulae conniventes, development 



of. 407 



Vas aberrans of the testicle, 318 



Vas deferens, 318 



development of, from the 



duct of the Wolffian body,. 420, 423 



Vasa efferentia of the testicle, 316 



Vasa recta of the testicle, 316 



Vasa vorticosa, 49 



Vena innominata, development of, 435 



Vense cavse, development of, 434 



Venereal orgasm, 335, 336, 340 



Venereal sense, 24 



Venous system, development of,. . 434 

 Ventricles of the brain, develop- 

 ment of, 401 



Vernix caseosa, 397, 454 



Vertebral column, development of, 395 



intervertebral disks, 394 



Vertebi-al, or dorsal plates, 390 



Vesiculse seminales, 320 



fluid of, 324 



development of, 423 



Vestibule of the ear, 163, 214 



development of, 403 



Villi of the intestine, development 



of, 407 



Visceral arches and clefts, 411 



Visceral, or abdominal plates, 391, 



405, 411 



Vision, general considerations of,. 37 

 area of, 72, 86 



Vision, of near objects through a 



pinhole, 110 



erect impressions produced 



by images inverted on the retina, 116 



binocular, 117 



corresponding points in the 



retina, 119 



monocular, 122 



duration of luminous impres- 

 sions, 127 



time necessary for, 127 



Vitality, 461 



Vital properties of organized tis- 

 sues, 255 



Vitelline membrane of the ovum, . 289 



villosities of, 361 



Vitellus, 290 



deformation and gyration of, 354 



change in the appearance of, 



after fecundation, 355 



nucleus of, 356 



segmentation of, 356 



Vitreous humor, 65 



development of, 402 



hyaloid membrane of, 65 



Wagner, spot of, 291 



Weight, appreciation of, 16 



Wharton, gelatine of, 371 



Winking, 141 



Wolffian bodies, 391, 420 



ducts of, 420 



development of ducts of, into 



the vasa deferentia, 420, 423 



structure of, 421 



disappearance of, 422 



Yolk, principal, or formative,. . . . 290 

 Youth, 459 



Zone of Zinn, 49, 63 



