8/4 



INDEX. 



HEART. 



Heart continued. 

 intracardiac nerves, 253 

 investing sac, 203 

 muscular fibres of, 93 

 musculi papillares, 210 

 nervous system, influence on, 247 

 output of, 246 

 pericardium, 203 

 physiology, 231 etseq. 

 reflex inhibition, 252 

 situation, 203 

 size and weight, 208 

 sounds of, 235 

 causes, 236 

 structure of, 208 

 valves, 209 

 auriculo- ventricular, 208 



function of, 233 

 semilunar, 210 



function of, 234 

 structure, 211 



ventricles, their action, 204, 207 % 

 work of, 246 



Heat, animal. See Temperature, 

 influence of nervous system, 601 

 of various circumstances on, 600 



et seq. 



losses by radiation, etc., 598 

 variations of, 596 

 Heat coagulation, 396 

 Heat-rigor, 159, note 

 Heat spots, 703 

 Heat-value of food, 597 

 Height, relation to respiratory capacity, 



Helicine arteries, 796 



Helicotrema, 720 



Helix of ear, 713 



Heller's nitric- acid test, 567 



Helmholtz's induction coil, 117 



myograph, 118 



phakoscope, 761 

 Hemianopsia, 678, 787 

 Hemiplegia, 6d6, 672 

 Hemisection 01 spinal cord, 616, 657 

 Hemispheres, Cerebral. See Cerebrum. 

 Hensen's line, 89 

 Hepatic cells, 497 



colic, 507 



Herbst, corpuscles of, 695 

 Bering's theory of colour, 778 

 Hetero-albumose, 484 

 Hexone bases, 402 

 Hiccough, mechanism of, 362 

 Hill (Croft) on inverting ferments, 



405 



Hill (Leonard) on the circulation of 

 blood in the brain, 277 et seq. 



on the influence of gravity on the cir- 

 culation, 294 



on alterations in atmospheric pressure, 



372 

 Hill's air-pump, 382, 383 



INTERNAL CAPSULE. 



Hind-gut, 814 



Hippuric acid, 558 



Histone, 428 



Holoblastic ova, 804 



Horopter, 785 



Hiirthle's manometer, 243, 290 



differential manometer, 245 

 Hyaline cartilage, 53 



corpuscle, 419 

 Hyaloplasm, 8 

 Hydrobilirubin, 504, 547 

 Hypermetropia, 763 

 Hypoblast, 22, 807 



organs formed from, 815 

 Hypoglossal nerve, 630 



distribution, 631 



origin, 630 

 Hypoxanthine, 330, 558 



presence in the spleen, 325 



I. 



Ileo-ca:cal valve, 445, 452, 454 

 lleum, 446 



Image, formation on retina, 757 

 Impregnation of ovum, 805 

 Inanition or starvation, 587 

 Incus, 716 



development of, 829 

 Indican, 561 

 Indigo, io. 

 Induction coil, 1 14 et seq. 



current, 114 

 Infundibulum, 344 

 Inhibitory centre for heart, effect of 



venous blood on, 371 

 Inhibitory influence of pneumogastric 



nerve, 247 



Inhibitory nerves, 164 

 Inogen, 155, 160 

 Inorganic compounds in body, 384 



salts in protoplasm, 9 

 Inosite, 390 

 Insalivation, 518 

 Inspiration', 347 



elastic resistance overcome by, ib. 



expansion of chest in, ib. 



extraordinary, 349 



force emplojed in, 354 



mechanism of, 346 et seq. 

 Instruments for demonstrating muscular 



action, 112 et seq. 

 Intercellular material, 5, 39 



passage, 344 

 Intercentral nerves, loo 

 Intercostal muscles, action .in inspira- 

 tion, 349 et seq. 



action in expiration, 350 

 Intercrossing fibres of Sharpey, 63, 64 

 Intermittent pulse, 269 

 Internal capsule, 645, 669 



importance of, 645 



