INDEX. 



937 



Timbre of sounds, 758 

 Timothy, composition of, 187 

 Tissue changes in starvation, 674: 



elastic, 35 



fibrous, 35 



gelatinous, 35 



glandular, 34 



mucoid, 35 



muscular, 34 



nerve, development of, 34 



nitrogenous constituents of, 85 



non-nitrogenous constituents of, 85 

 Tissues, absorption of, for colors, 68 



and organs, development of, 31 



classification of, 33 



cohesion of, 62 



connective, 34 



contractile, 701 



development of, 15 



elasticity of, 65 



electrical phenomena of, 70 



extensibility of, 66, 67 



flexibility of, 67 



intercellular, 34 



optical characteristics of, 68 



physical properties, 61 



refraction of, 68 



reproductive, of the female, 908 



resistance of, to flexion, 64 

 to pressure, 63 

 to torsion, 64 

 to traction, 63 



specific gravity of, 62 

 Vongue, action of, in mastication, 264 



of horse, 233 



of ox, 233 



,Torricelli's theorem, 517 

 Touch corpuscles, 899 



sense of, 897 



Trachea, structure of, 569 

 Tradescantia virginica, 73 

 Transudation, 48 

 Tread, 20 



Trifacial nerve, 833 

 Tricuspid valve, 509 

 Trigeminal nerve, 833 

 Trochlearis, 832 

 Trot, 748 

 Trypsin, 409 



Tubular glands of stomach, 356 

 Tympanic membrane, 879 

 Tympanum, 877, 879 

 Tyrosin, 410 



Unformed ferments, 111 

 Unorganized and organized bodies, distinc- 

 tions between, 22 

 Unstable equilibrium, 731 

 Urea, excretion of, in starvation, 676 



formation of, 661, 662 

 Uric acid, 663 



source of, 662 

 Urinary secretion, mechanism of, 640 



Urinary tubules, functions of, 643, '646 

 Urination, mechanism of, 648 

 Urine, composition of, 636 



of carnivora, 637 



of dog, 640 



of herbivora, 637 



of horse, 638 



of ox, 639 



of pig, 640 



of sheep and goat, 640 



physical and chemical properties of, 



635 ' 

 Uterus, 908 



Vagus nerve of frog, 545 



wave, 549 



Vallisneria, movements in, 74 

 Valves of the heart, action of, 508 

 Vaso-constrictor nerves, 558 



dilator nerves, 558 



motor centre, 555 

 centres, 794 

 nerves, 554 

 Vegetable albumens, 93 



caseins, 94 



cells, chemical processes in, 137 



fibrin, 95 



foods, 161 



gelatin, 96 



globulins, 97 



physiology, definition of, 10 

 Vegetative functions, definition of, 8 

 Veins, blood pressure in, 539 



circulation in, 539 



velocity of circulation in, 540 

 Velocity of the blood, 530 

 Vena contracta, 518 

 Venous absorption, 453 



blood, gases of, 592 



sinus, 503 



Ventricle, fourth, of the brain, 812 

 Ventricles, capacity of, 532 



movements of, 503 



muscular fibres of, 502 

 Ventriculus, functions of, 3'80 

 Venus' fly-trap, motions of, 72 

 Vernix caseosa, 655 

 Vertebrates, digestive apparatus of, 209 



nervous system of, 769 

 Vesicle, blastodermic, 25 



germinal, 15 



modifications of free fertilization 



in, 18 



Vestibule of the ear, 877 

 Villi, structure and functions of, 456 

 Vision, sense of, 846 

 Visual apparatus, structure of, 846 



imperfection, 872 



purple, 868 



sensations, 864 



Vital capacity, volume of, 586 

 Vitellin, 97 

 Vitelline membrane, 15 



