INDEX. 



769 



Granular layers of retina, 589 

 Flogel, 398 



Grape-sugar. See Glucose. 

 Gray matter of cerebellum, 525 



of cerebrum, 508 



of crura cerebri, 500 



of medulla oblongata, 495 



of pons Varolii, 499 



of spinal cord, 476 

 Groove, primitive, 662 

 Growth, 6 



coincident with development, 6 



of bone, 56 



not peculiar to living beings, 6 

 Guanin, 744 

 Gubernaculum testis, 710 



H. 



Habitual movements, 470 

 Haematin, 86 



hydrochlorate of, 88 

 Hasmadynamometer, 144 

 Hsematochometer, 160 

 Haematoidin, 88 

 Haematoporphyrin, 87 

 Haemin, 88 

 Haemochromogen, 87 

 Haemocytometer, 77 

 Hemoglobin, 83 et seq. 

 action of gases on, 86 

 derivatives of, 86 

 distribution. 88 

 estimation of, 88 

 spectrum, 84 

 Hair-follicles, 346 



their secretion, 349 

 Hairs, 345 



chemical composition of, 741 

 structure of, 345 

 Half vision centre, 529 

 Hamulus, 572 

 Hare-lip, 682 



Hassall, concentric corpuscles of, 388 

 Haversian canals, 46 

 Head-folds, 667 



Hearing, anatomy of organ of, 567 

 double, 583 



impaired by lesion of facial nerve, 

 influence of external ear on, 575 

 of labyrinth, 579 

 of middle ear, 576 

 physiology of, 575 

 See Sound, Vibrations, etc. 

 Heart, 97 et seq. 

 action of, 115 

 accelerated, 133 

 force of, 126 

 frequency of, 126 

 inhibited, 131 



inhibited after removal, 131 

 rhythmic, 126 et seq. 

 work of, 128 



auricles of, 99, 100. See Auricles. 

 49 



Heart continued. 

 capacity, 100 

 chambers, 99 

 chordae tendineae of, 103 

 columnae carneae of, 103 

 course of blood in, 115 

 development, 687 

 endocardium, 102 

 force, 126 

 frog's, 129 

 ganglia of, 128 

 impulse of, 123 



tracing by cardiograph, 124 et seq. 

 influence of pneumogastric nerve, 131 



of sympathetic nerve, 133 

 investing sac, 97 

 muscular fibres of, 102 

 musculi papillares, 104 

 nervous connections with other organs, 

 133 



rhythm, 126 



nervous system, influence on, 128 

 revolution of, 121 

 situation, 97 

 sounds of, 121 



causes, 122 

 structure of, 98 

 tendinous cords of, 103 

 tubercle of Lower in, 99 

 valves, 103 



arterial or semilunar, 104 

 function of. 118 



auriculo-ventricular, 103 



function of, 117 

 ventricles, their action, 116, 127 



capacity, 100 

 weight of, 100 

 work of, 128 

 Heat, animal. See Temperature. 



influence of nervous system, 323 

 of various circumstances on, 316 



losses by radiation, etc., 320 



sources and modes of production, 318 



developed in contraction of muscles, 



319 



Heat centres, 323 

 Heat-producing tissues, 318 

 Heat or rut, 646 



analogous to menstruation, 646 

 Height, relation to respiratory capacity, 



185 



Helicotrema, 572 

 Helix of ear, 568 

 Helmholz's modification, 410 

 Hemipeptone, 272 



Hemispheres, Cerebral, 508. See Cere- 

 brum. 



Henson's disc, 398 

 Hepatic cells, 274 



ducts, 277 



veins, 275 



vessels, arrangement of, 275 et seq. 

 Herbivorous animals, 



perception of odors by, 566 



