638 



INDEX. 



Heart, action of, 96 



effects of, 114 

 force of, 110 

 frequency of, 108 

 after removal, 112 

 rhythmic, 111 

 weakened in asphyxia, 186 

 auricles of, 91 



their action, 96 



See Auricles, 

 chordae tendineae of, 94 

 columnse carneoe of, 94 

 course of blood in, 91 

 development of, 597 



of cavities and septa, 599 

 fleshy columns of, 94 



action of, 98 

 ganglia of, 112 

 hypertrophy of, 312 

 impulse of, 108 

 influence of pneumogastric nerve, 



111, 438, 439 

 of sympathetic nerve, 112, 451, 



452 



muscular fibres of, 461 

 nervous connections with other 



organs, 114 

 sounds of, 105 

 first, 105 



in relation to pulse, 135 

 second, 106 

 structure of, 91 

 tendinous cords of, 94 

 valves of, their action, 99 

 arterial or semilunar, 96 



action of, 102 

 auriculo-ventricular, 94 



action of, 100 

 ventricles of, their action, 97 



capacity, 111 



Hearts, lymphatic. See Lymph-hearts. 

 Heat, action of on nerves, 378 



animal, 189. See. Temperature, 

 adaptation to climate, 191 

 connection of with respira- 

 tion, 192-196 

 influence of age on, 189 

 of exercise, 190 



of external coverings, 



197 



of food, 197 

 of nervous system, 198 

 losses by radiation, &c., 194 

 in relation to bile, 263 

 sources and modes of produc- 

 tion, 192 



developed in contraction of mus- 

 cles, 190, 463 

 perception of, 559 

 Heat or rut, 568 



analogous to menstruation, 569 



Height, relation to respiratory capa- 

 city, 167 

 Helicotrema, 532 

 Helix of ear, 527 



Hemispheres, cerebral. See Cerebrum. 

 Hepatic cells, 253 



ducts, 252, 257 



veins, 255 



characters of blood in, 80 



vessels, arrangement of, 253 

 Hepatin, 267 

 Herbivorous animals, perception of 



odors by, 498 



Henna phroditism, apparent, 613 

 Hibernation, retarded respiration, <fec., 

 during, 189 



state of thymus in, 330 



temperature in, 194 

 Hiccough, mechanism of, 182 

 Hilus of kidney, 350 



spleen. 327 



Hip-joint, pain in its diseases, 384, 395 

 Hippuric acid in blood, 76 



in urine, 463 

 Horny matter, chemical composition 



of, 24 



Horse's blood, peculiar coagulation of, 

 68 



cerebellum, 417 

 Hunger, sensation of, 234 

 Hyaline cartilage, 44 

 Hydrochloric acid in gastric fluid, 222 

 Hydrophobia, spasms of, 386 

 Hygrometric conditions influencing 



respiration, 176 

 Hymen, 562 

 Hypertrophy, 312 

 Hypoglossal nerve, 444 

 Hypospadias, 613 



Ideas, connection of with cerebrum, 



420 



Ileum, 239 

 Ileo-csecal valve, 238, 248 



structure and action, 250, 276 

 Image, formation of on retina, 507 

 distinctness of, 508 

 inversion of, 512 

 Impressions, retained and reproduced 



in cerebrum, 420 

 Impulse of heart, 107 

 Incus, 529 



function of, 539 

 Inflammatory blood, coagulation of, 



64 



corpuscles in, 68 

 Infundibulum, 158 

 Inhibitory influence of pneumogastric 



nerve, 113 

 Inhibitory nerves, 377 



