802 



INDEX. 



Hearing, continued. 

 physiology of, 679. 

 See Sound, Vibrations, etc. 

 Heart, 102-132. 

 action of, 109. 



effects of, 132. 



force of, 126. 



frequency of, 124. 



after removal, 129. 



rhythmic, 128. 



weakened in asphyxia, 228. 

 auricles of, 102. 



their action, 109. 



Sec Auricles, 

 chordae tendinea? of, 106. 

 columnse, carnese of, 107. 

 course of blood in, 103. 

 development of, 763. 



of cavities and septa, 765. 

 fleshy columns of, 107. 



action of, in. 

 ganglia of, 129. 

 hypertrophy of, 392. 

 impulse of, 123. 

 influence of pneumogastric nerve, 



131, 557, 559- 

 of sympathetic nerve, 129, 574, 



muscular fibres of, 587. 



nervous connections with other 



organs, 131. 

 sounds of, 119. 

 first, 1 20. 



in relation to pulse, 160. 

 second, 121. 

 structure of, 102. 

 tendinous cords of, 106. 

 valves of, their action, 112. 

 arterial or semilunar, 108. 



action of, 115. 

 a uriculo- ventricular, 105. 



action of, 114. 

 ventricles of, their action, 1 10. 



capacity, 128. 

 Hearts, lymphatic. See Lymph- 



hearts. 



Heat, action of on nerves, 476. 

 animal, 231. See Temperature, 

 adaptation to climate, 234. 

 connection of with respiration, 



236-238. 



influence of age on, 232. 

 of exercise, 232. 

 of external coverings, 243. 



Heat, continued. 



of food, 242. 

 of nervous system, 243. 

 losses by radiation, etc. , 238. 

 in relation to bile, 328. 

 sources and modes of produc- 

 tion, 236. 



developed in contraction of nius- 

 | cles, 233, 589. 



perception of, 712. 

 Heat or rut, 724. 



analogous to menstruation, 726. 

 Height, relation to respiratory capa- 

 city, 202. 

 Helicotrema, 677. 

 Helix of ear, 671. 



Hemispheres, Cerebral. See Cere- 

 brum. 



Hepatic cells, 316. 

 ducts, 314, 320. 

 veins, 319. 



characters of blood in, 88. 

 vessels, arrangement of, 316. 

 Hepatin, 334. 

 Herbivorous animals, 



perception of odours by, 634. 

 Hermaphroditism, apparent, 782. 

 Hiccough, mechanism of, 222. 

 Hilus of kidney, 440. 



spleen, 412. 

 Hip-joint, pain in its diseases, 485, 



499- 

 Hippuric acid in blood. 83. 



in urine, 458. 

 Horny matter, chemical composition 



of, 15. 

 Horse's blood, peculiar coagulation 



of, 73- 



cerebellum, 529. 

 Hunger, sensation of, 291. 

 Hyaline cartilage, 42. 

 Hybernation, retarded respiration, 



etc., during, 231. 

 state of thymus in, 416. 

 temperature in, 238. 

 Hydrochloric acid in gastric fluid, 



275- 



Hydrophobia, spasms of, 488. 

 Hygrometric conditions influencing 



respiration, 214. 

 Hymen, 717. 

 Hypertrophy, 392. 

 Hypoglossal nerve, 565. 

 Hypospadias, 782. 



