INDEX. 



871 



PAGE 



Vas deferens, development of, from the Wolf- 

 flan duct 831 



Vasa vasorum 63, 89 



Vasa vorticosa 677 



Vascular arches, in the embryon 837 



Vaso-dilator nerves 045 



Vaso-inhibitory nerves 045 



Vaso-motor centres and nerves 643 



Vaso-motor reflex phenomena 043 



Vater, corpuscles of 513 



Veins, variations in the color of the blood in. . . 4 



renal, color of the blood in 4 



discovery of valves of 30 



uses of the valves of 31, 98 



circulation in 87 



capacity of, as compared with that of the 

 arteries 87 



anastomoses of 89, 99 



structure and properties of 89 



vasa vasorum of 89 



strength of the walls of 90 



elasticity and contractility of 91 



valves of 91 



those in which there are no valves. 92 



course of the blood in 93 



pulse in 94 



pressure of blood in 94 



rapidity of the flow of blood in 95 



causes of the circulation in 95 



obstacles to the flow of blood in 95, 100 



influence of muscular contraction upon the 

 flow of blood in 96 



influence of the force of aspiration from 

 the thorax upon the circulation in 96 



of the liver, circulation in 97 



relations of respiration to the circulation 



in 97, 100 



entrance of air into 98 



influence of gravity upon the circulation 



in 98, 101 



influence of a suction force exerted by larg- 

 er upon smaller vessels upon the circulation in 98 



regurgitant pulse in 100 



development of 837 



Velum pendulum palati 203 



Vena innominata, development of 838 



Venas cavse, development of 837 



Venereal sense 658 



Venoms, absorption of 330 



Ventilation of hospitals, prisons, etc 137 



Ventricles of the heart 34 



comparative capacity of right and left 34 



comparative thickness of right and left 35 



shortening and elongation of 39 



Verheyn, stars of 365 



Vermiform appendix 258 



Vernix caseosa 325, 818 



Vertebrae, first appearance of 817 



Vertebral arteries, development of 836 



Vertebral plates 814 



Vesiculae seminales 788 



development of 832 



Vestibule of the ear 736, 755 



Villi of the small intestine 237 



development of 823 



Vinegar 181 



Visceral arches 825 



Visceral clefts 825 



Visceral plates 815 



Vision, physiological anatomy of the organs of 671 



area of 691 



laws of refraction, dispersion etc., in 692 



refraction by lenses in 693 



myopic 695 



hypermetropic 695 



presbyopic 695 



formation of images in 68 



demonstration of the fact that the layer of 



rods and cones is the seat of impressions in . . 698 

 area of distinct 699 



blind spot in the retina in 6S9 



accommodation of, to different degrees of 



illumination 702 



mechanism of refraction in 702 



astigmatic 704 



movements of the iris in 705 



accommodation of, for different distances. 708 



through a small orifice, like a pinhole 711 



erect, although the images on the retina are 



inverted 711 



field of 711 



binocular 712 



double 712 



corresponding points on the retina in 713 



horopter of 714 



monocular 714 



binocular field of 714 



estimation of distance, the form and so- 

 lidity of objects, etc., in 715 



with the stereoscope 716 



binocular fusion of colors in 716 



duration of luminous impressions in (after 

 images) 716 



fusion of colors in . . 717 



irradiation in 717 



accidental areolse in 718 



centres for 722 



perception of colors in 723 



development of the organs of 821 



Visual purple and visual yellow 700 



Vital capacity of the lungs 133 



variations in, with stature 133 



Vital point 632 



Vitellme circulation 835 



Vitelline membrane of the ovum 777 



disappearance of, after fecundation . ... 803 



villosities of .803 



Vitelline nucleus - 800 



Vitellus 777 



deformation and gyration of 799 



bright appearance of, after fecundation . 799 



formation of the polar globule of ... 799 



formation of the nucleus of . . . 800 



segmentation of . 



Vitreous humor 



development of 



Vocal chords . HO, 488 



action of, in phonation - 491 



Vocal registers 



Voice and speech. .. . .... 488 



Voice, mechanism of the production of . 491 

 action of the vocal chords in 491 



