INDEX. 



649 



variability of, 219 ; sulphates in, 220; in- 

 fluence of diet on, 220 ; saline matter of, 

 220. 



Uterine nutrition, 525 ; tubes, 525. 



Utricle, 416. 



V. 



VACUUM, tendency to a, in respiration, 165. 

 Valentin on diffusion, 163 ; on perspiration, 



229 ; on food, 39. 



Valves of the heart, 138 ; sounds of, 139. 

 Valvulae conniventes, 67. 

 Variable results from invariable causes, 270, 



281. 

 Variations of heat, 179 ; effect of, on man, 



180 ; of species of plants, 479. 

 VASCULAR area, 528 ; lamina, 528 ; system, 



origin of, 528. 



Vegetable cells, circulation in, 132, 466. 

 Veins, absorption by, 84, 143. 

 Ventral cord, 300, 307, 609. 

 Ventricles, 138 ; force of, 139. 

 Venturi, principle of, 90. 

 Vermiform appendix, 63. 

 Vernois, table from, 53. 

 Vertebra, 528. 

 Vertebral canal, 294. 

 Vertebrata, 294. 

 Vertical view of skull, 582. 

 VESICULAR matter, composition of, 274 ; re- 

 lations of, 315. 

 Vestibule, 374. 



Vestiges of nervous impressions, 269, 288. 

 Vibration of sound, time measured by, 372. 

 Vicarious action, 47, 190. 

 Vierordt, 164. 

 Villi, 84, 86, 87, 110 ; cells of, 88 ; action of, 



110. 



Virchow on adipocire, 247. 

 VISION, 379 ; comparative anatomy of, 380 ; 



single and double, 395 ; inverse, 401. 

 Visions, 404 ; conditions of, 410. 

 Visual hallucinations, 403. 

 Vital principle, 24, 25, 55, 108, 456. 

 Vital spark, 460. 

 Vitreous humor, 385. 

 Vocal sounds, 352, 354. 

 Voice, 351 ; artificial larynx, 355 ; pitch of, 



356. 



Volkmann on muscular contraction, 276. 



Volume of contracting muscle, 450. 



Volvox globator, 513. 



Von Bar, law of, 514. 



Von Becker on carbohydrates, 39 ; on sugar, 



73. 

 Vowels, 356. 



W. 



WALKING, 453. 



Wallace on eye, 385. 



Want, effect of, 587. 



Warmth, artificial, 181 ; increased quantity 



required in sleep, 554. 

 Wasmann on pepsin, 55. 

 Wasp, habits of, 606. 

 Waste of tissue, 12, 23, 52. 

 WATER, use of, 16, 21, 22 ; solvent power of, 



21 ; use in milk, 29 ; absorption of, 52 ; 



quantity exhaled, 168 j cooling effect of, 



185; of blood, 121. 

 Wave in blood, 141. 

 Weaning of plants, 465. 

 Weber on pelvis, 587 ; on quantity of blood, 



113 ; on standing, 453. 

 Weight of man, 13, 14, 541 ; of infants, 14. 

 Whale, 491. 

 Wheatstone, 397. 

 Whispering, 356. 

 White on arm, 580. 

 Wigan on duality of mind, 329, 331. 

 Willow, 469. 

 Wilson on heart, 136. 

 Wine-making, 78. 

 Wolffian bodies, 150, 533. 

 Women in Asia and Europe, 593. 

 Words, origin of, 356. 

 Worship, public, influence of, 628. 

 Writing, 358, 610, 615, 635. 



ZIGZAG appearance of muscle, 439. 

 Zimmerman on respiration, 170. 

 Zinc acted on by gastric juice, 50. 

 Zona pellucida, 523, 525. 

 Zoospores, 496. 

 Zygnema quininum, 515. 



THE END. 



