730 



INDEX 



Gyrus marginalis, 634. 



Gyrus sigmoicles, 266, 632, Fig. 282. 



Gyrus supramarginalis, 662, tig. 296 



Hallucinations, visual, 454. 

 Haploscope, 555. 



Haptogen membrane of milk, 701. 

 Hsematin, 152. 

 Hsematinic acid, 254. 

 Haematogens, 308. 

 Hcematoidin, 254. 

 Hrematoporphyrin, 152, 383. 

 Haemin crystals, 153, Fig. 49. 

 Haemochromogen, 75, 152. 

 Ha?modromograph, 209, Fig. 81. 

 Haemoglobin, 150, 151. 



absorption of CO 2 by, 339, Fig. 132. 



absorption of Oz by, 336. 



absorption spectra of, 151, Figs. 47, 48. 



carbon-dioxide, 152. 



carbon-monoxide, 152. 



nitric-oxide, 152. 



percentage of, in red blood corpuscles 150. 



relation of, to bile pigments, 254. 



union of, with CO 2 , 339. 

 Haemoglobins, 75. 

 Hffimopyrrol, 152. 



Hair as protection against loss of heat, 405. 

 Hair cells of organ of Corti, 499, 500, Fig. 199. 

 Hammer of middle ear, 495, Fig. 197; 496 Fig. 



198. 



Head, vasomotor nerves of, 232, 235. 

 Head tones, 505. 

 Hearing, see Ear. 



cortical field for, 653, 654, Fig. 293. 



range of, 490. 



reaction time to, 673, 674. 



sense of, 451, 489. 



Heart, action current of, 13, Fig. 13; 179, Fig. 

 63; 180, Fig. 64. 



anaemia of, 181. 



artificial nourishment of, 25, 182. 



automatism of, 185. 



chambers of, 161; see also under individual 

 names. 



changes in form of, 163, 164. 



changes of pressure in, 168 seq. 



compensatory pause of, 183, Fig. 65. 



contraction of, nature of, 179. 



coronary circulation in, 180. 



cross section through, 163, Fig. 51. 



diastole of, 162, 176. 



electrical stimulation of, 182 seq. 



fibrillary contractions of, 181. 



filling of, in diastole, 176. 



fluttering of, 187. 



influence of thoracic suction on, 176. 



intrinsic ganglia of, 186. 



KrehTs cone of, 163, Fig. 52. 



Heart, movements of, 162. 



nutrient medium for, 25, note, 182. 

 nutrition of, 180. 

 period of ejection of, 171. 

 period of rising tension of, 170, 175. 

 power of, 177, 178. 



pressure in different chambers of, 169. 

 propagation of excitation wave in, 187. 

 muscular theory, 186. 

 nervous theory, 187. 

 pulse volume of, 204. 

 reflexes, 193. 



refractory period of, 183, Fig. 65. 

 separation of auricles from ventricles in, 



185, 189. 



sounds, 167, 168, 175. 

 structure of wall of, 162, 163. 

 suction of, in diastole, 177. 

 systole of, 162. 

 tactile sensations in, 194. 

 tenacity of life in, 182. 

 tetanus of, 184. 

 time relations of events in, 170, 171 ; 173, 



Fig. 60; 175, Fig. 62; 176. 

 valves of, 165. 

 variations of electrical potential in, 179, 



Fig. 63. 



vasomotor nerves of, 233, 235. 

 work of, 178. 

 Heart beat, acceleration of, by inflation of 



lungs, 195. 

 cause of, 185. 

 force of, 188. 



influence of blood on, 184, 204. 



of vagus on, 189. 



frequency of, as affected by age, 197. 

 by food, 197, Fig. 71. 

 by individual peculiarities, 198. 

 by muscular exercise, 197. 

 by sex, 197. 

 by size of body, 197. 

 by temperature, 184, Fig. 66; 19 

 by vagus nerve, 188. 



Heart muscle, contraction of, nature of, 179. 

 propagation of excitation wave in, 187. 

 properties of, 179. 

 Heart nerves, 188. 



accelerator, 191, Fig. 67; 688. 

 afferent, 193. 

 centers for, 195. 

 depressor, 193, Fig. 69; 681. 

 efferent, 188. 



inhibitory, 188; 191, Fig. 67. 

 reflexes through, 193. 

 Heat, conduction and radiation of, 403. 

 formation of, universal in nature, 46. 

 influenced of, on elementary organisms, 29. 

 production of, in cold-blooded animals, 46. 

 in man, 402. 



