INDEX. 



805 



Heart, continued. 



tendinous cords of, 116. 

 valves of, their action, 122. 

 arterial or semilunar, 118. 



action of, 125. 

 auriculo- ventricular, 115. 



action of, 124. 

 ventricles of, their action, 120. 



capacity, 137. 



Hearts, lymphatic. See Lymph- 

 hearts. 



Heat, action of on nerves, 478. 

 animal, 242. See Temperature, 

 adaptation to climate, 245.^ 

 connection of with respiration, 



246-249. 



influence of age on, 253. 

 of exercise, 254. 

 of external coverings, 254. 

 of food, 250. 

 of nervous system, ib. 

 losses by radiation, etc., 245. 

 in relation to bile, 334. 

 sources and modes of production, 



246. 



temporary increase of, 251. 

 developed in contraction of mus- 

 cles, 254, 380, 590. 

 by plants, 249. 

 perception of, 713. 

 Heat or rut, 725. 



analogous to menstruation, 727. 

 Height, relation to capacity of chest, 



212. 



Helicotrema, 678. 

 Helix of ear, 672. 



Hemispheres, Cerebral. See Cere- 

 brum. 



Hepatic cells, 321. 

 ducts, 321, 326. 

 veins, 325. 



characters of blood in, 97. 

 vessels, arrangement of, 322-25. 

 Hepatin, 339. 

 Herbivorous animals, their alkaline 



urine, 450. 



perception of odours by, 635. 

 Hermaphroditism, apparent, 784. 

 Hiccough, mechanism of, 232. 

 Hilus of kidney, 442. 

 Hip-joint, pain in its diseases, 487, 



501. 



Hipp uric acid in blood, 91. 

 in urine, 460. 



Horny matter, chemical composition 



of, 24. 

 Horse's blood, peculiar coagulation 



of, 82. 



cerebellum, 530. 

 Hunger, sensation of, 298. 

 Hyaline cartilage, 51. 

 Hybernation, retarded respiration, 



etc., during, 241. 

 state of thymus in, 418. 

 temperature in, 249. 

 Hydrochloric acid in gastric fluid, 



282. 

 Hydrogen, union of with oxygen, 



producing heat, 246. 

 Hydrophobia, spasms of, 490. 

 Hygrometric conditions influencing 



respiration, 224. 

 Hymen, 718. 

 Hypertrophy, 397. 

 Hypoglossal nerve, 5^5- 

 Hypospadias, 784. 



I. 



Ideas, connection of with cerebrum, 



534- 



Ileum, 304. 

 Ileo-caecal valve, 304, 315. 



structure and action, 317, 350. 

 Image, formation of on retina, 647. 

 distinctness of, 648. 

 inversion of, 653. 

 Impressions, conduction of by nerves, 



476, 479-85. 

 by spinal cord, 497. 

 by sympathetic nerves, 572-74. 

 retained and reproduced in cere- 

 brum, 534. 



Impulse of heart, 132. 

 Incito-motory tracts, 516, note. 

 Incus, 675. 



function of, 687. 

 Inflammatory blood, coagulation of, 



76. 



corpuscles in, 71. 

 Infundibulum, 201. 

 Inhibitory influence of pneumo- 



gastric nerve, 142. 

 Injections into blood, 93. 

 Inorganic bodies, distinction from 



organic, 3, 1 6. 

 constituents of blood, 90. 

 elements in human body, 26. 

 Insects, temperature of, 249. 



