INDEX 



731 



Heat, production of, in plants, 46. 

 Heat as stimulus, 58. 

 Heat centers, 408. 



Heat loss, from the body by different means, 

 403. 



protection against, 404. 



regulation of, 407. 

 Heat nerves, 408. 



end organs of, 468. 

 Heat production, 46, 402. 



amount of, in human body, 94. 



in glands, 402. 



in muscles, 402, 439. 



in nervous system, 402. 



influenced by amount of food, 407. 

 by muscular work, 116. 

 by surrounding temperature, 114. 



ratio of, to external work of muscle, 440. 

 Heat regulation, 407. 



centers for, 408. 



disturbances to, by extirpation of thyroid, 

 361. 



in the newborn, 409. 



Heat sense, 459; see also Temperature sensa- 

 tions. 



topographical distribution of, 460, Fig. 183. 



tracts for, in the cord, 597. 

 Heat spots on the skin, 458; 459, Fig. 182; 461. 

 Heat units, 26, note. 

 Heliotropism, 64. 

 Heller's test for proteid, 69, 384. 

 Hemiamblyopia, 655, 660. 

 Hemianopia, 657. 

 Hemilesion of the cord, 597. 

 Hemiplegia, 646. 



Hemisection of the cord, 595, 596, 640. 

 Hemispheres of the brain, 600. 

 Henle's loop, 385, Fig. 144; 386. 

 Henry's law of absorption of gases, 334. 

 Hepato-pancreas of isopod, 244, Fig. 99. 

 Hering's theory of color vision, 544, 546. 

 Hermann's theory of animal current, 48. 

 Heteroalbumose, 249. 



food value of, 108. 

 Hexoses, occurrence of, 80. 

 Hindbrain, or rhomencephalon, 600, 601. 



secondary, or metencephalon, 600, 601. 

 Hippuric acid, 155, 378, 383. 

 Histidin, 72, 255. 

 Histological methods, 4. 

 Histons, 77. 



Homocentric bundle of light rays, 523, note. 

 Homoiothermous animals, 46, 398, 404, 442. 

 Hyaloplasm, 19. 

 Hydrobilirubin, 254. 

 Hydrochloric acid, action of, on ptyalin, 246. 



antiseptic properties of, 292. 



influence of, on tryptic digestion, 294. 



of gastric juice, 247. 

 43 



Hydrochloric acid, where formed, 268. 

 Hyoglossal muscles, action of, in deglutition, 



280, 281. 



Hydrolytic cleavage, 70, 243. 

 Hydrometric pendulum, 210. 

 Hypersemia, influence of, on transudation, 349. 

 Hypersesthesia, 597. 

 Hypermetropia, 519; Fig. 215; 520. 

 Hypertonic solutions, 32. 

 Hypogastric nerves, 392, Fig. 145; 693, 700. 

 Hypogastric plexus, 392, Fig. 145, 393, 694, 



700. 



Hypoglossal nerve, 681. 

 Hypophysis cerebri, 367; see also Pituitary 



body. 



Hypotonic solutions, 32. 

 Hypoxanthin, 76, 252, 372, 373, 413. 



Ideas, definition of, 451, note. 



formation of, 662. 

 Idiocy, 670. 

 Images in eye, 513 seq., 556, Fig. 248. 



in optical system, 511, Figs. 208, 209. 

 Imbecility, 669. 



Imbibition, capillary and molecular, 353. 

 Immunity, 156. 



Inanition, state of, 155; see also Fasting. 

 Incidence, angle of, 509, Fig. 206. 

 Incoordination of movements, 608; see also 



Coordination of movements, loss of. 

 Incubation, liberation of oxygen in, 27. 

 Incus of middle ear, 495, Fig. 197. 



articulation of, with malleus, 496, Fig. 198. 

 Indican, 379. 

 Indigosulphate of sodium, elimination of, by 



kidneys, 388. 

 Indol, 378, 379. 

 Indol nucleus in proteid, 71. 

 Indoxyl, 379. 



Indoxyl-sulphuric acid, 379. 

 Induction coil, 419, 420, Fig. 158. 



currents, 426. 



shocks, 422, 423. 



stimulation of muscles and nerves by, 418, 

 422, Fig. 160. 



unipolar effects of, 426, Fig. 163. 

 Infundibulum, 600. 

 Infusoria, chemotaxis of, 55. 



geotaxis of, 56. 



ingestion of food in, by ciliary action, 37. 



osmotic relations in, 34. 



Ingesta, determination of, in metabolism, 83. 

 Ingestion of food by elementary organism, 30, 



36, Fig. 21 ; 37. 



Ingestion of foreign bodies by leucocytes, 37. 

 Inhibition, definition of, 50. 



of auricle, 189. 



of central veins, 189. 



of muscles, antagonistic, 640. 



