INDEX. 
Synopsis, brief, of physiology of vision, 
602. 
physiology of hearing, 620. 
Systole, 240. 
Tactile sensibility, 555. 
Tambour of Marey, 177. 
Taste, sense of, 623. 
Taurin, 312. 
Taurocholic acid, 312. 
Teeth, comparative, 304. 
Tegmentuin, 538, 
Temperature, influence of, on muscle, 202. 
regulation of, 464, 
Testes, 61. 
Tests for proteids, 672. 
Tetanic contraction, 183. 
Thermal changes in contracting muscle, 
195. : 
sensations, 554. 
Thoracic breathing, 373. 
Time, cerebral, 535. 
Tissues, the contractile, 166. 
respiration in, 392. 
comparative, 167. 
Traube-Hering curves, 403. 
Trypsin, 316. 
Tunicin, 680. 
Turck, columns of, 488. 
Types of respiration, 373. 
Tyrosin, 316. 
Unicellular animals, 20. 
Umbilical vesicle, 72. 
Urea, 424, 686. 
and uric acid, metabolism, in forma- 
tion of, 446. 
nitrate, 687. 
Uric acid, 448. 
evolution, 448. 
Urine, chemically and physiologically 
considered, 422. 
quantity, 423. 
constituents of, 423. 
salts of, 424. 
abnormal, 425. 
comparative, 425. 
secretion of, 426. 
expulsion of, 429. 
pigments of, 685. 
Urobilin, 685. 
Uroerythrin, 685. 
699 
Urogenital system, development of, 106. 
Uses of glycogen, 434. 
Vagus, influence on the heart, 265. 
Valves of the heart, 219. 
Valvule conniventes, 357. 
‘Variations, functional, in muscle, 207. 
of cardiac pulsation, 242. 
Vascular system, evolution of the, 285. 
development of the, 103. 
Vaso-motor influences, 277. 
Vas deferens, origin of, 110. 
Veins, 221. 
valves of, 222. 
Velocity, the, of the blood, 224. 
of nervous impulse, measurement of, 
181. 
Venous pulse, 251. 
Ventricles, of the heart, 218. 
Vision, 559. 
embryological, 562. 
dioptrics of, 563, 
psychological aspect of, 583. 
synopsis of physiology of, 602. 
astigmatic, 573. 
spherical aberration of, 572. 
chromatic aberration of, 578. 
entoptic phenomena of, 574. 
anomalies of refraction of, 574. 
sensations of, 576. 
affections of the retina in, 578. 
psychological aspects of, 586. 
co-ordination of the two eyes in, 591. 
estimation of solidity by, 595. 
Visual sensations, 576. 
impulses, nature of, 580. 
angle, 582. 
perceptions, imperfections of, 587. 
Vitellin, 674. 
Vitelline membrane, 55. 
Voice and speech, 639. 
registers and falsetto, 644. 
pathological, 646. 
comparative, 647. 
evolution, 652. 
summary, 652. 
Vomiting, comparative, 338, 339. 
pathological, 339. 
Wolffian duct, 98, 100. 
bodies, 100. 
Work, muscular, 199. 
of the heart, 241. 
