436 



INDEX. 



Heart, pressure in ventricle, the Chases, 



246 



,, duration of cardiac phases, 249,251 

 ,, summary of events in, 251 

 ,, work done by, 253 

 ,, structure of cardiac muscular tissue 

 in frog, 275 



,, in mammal, 276 



nerves and ganglia of, 'J77 

 ,, relation of to rhyth- 



mic power, 284 



sequence of events in beat of, 282 

 ,, power of independent rhythm in 

 the several parts, 282284 

 ,, characters of the contraction of 

 ,, muscular fibres of, 285288 

 ,, rhythmic power resident in mus- 

 cular tissue, 288 



,, causation of normal sequence in, 289 

 ,, inhibition of beat of in frog, 290 

 in mammal, 296 



augmentation of beat of in frog, 293 

 ,, ,, ,, in mammal, 298 



,, inhibitory and augmentor fibres in 

 frog, 292, 294 

 ,, ,, ,, in mammal, 297- 



300 



,, inhibition, reflex, of, 295 

 ,, centre of inhibition of (cardio-in- 



hibitory centre), 295 

 inhibition and augmentation of 



beat, nature of, 300 

 ,, inhibition of, suspended by atro- 



pin, 301 

 Heart-beat, regulation of, 273 



,, intrinsic regulation of, 286, 



344, 921 



,, development of normal, 280 

 influences other than nervous 



affecting, 308 

 ,, relations of with vaso-motor 



system, 351 



,, normal rate of, 346 

 ,, slowing effects of venous blood 



on, 621 



during asphyxia, 626 

 ,, of the babe, iv. 405 

 ,, death marked by cessation of, 



iv. 418 



Heat, given out by contracting muscle, 104 

 ,, loss of energy in the form of, 803 

 ,, bodily, measurement of, 804 

 .,, sources and distribution of, 807 

 . modes of loss of, 809 

 ,, regulation of, by variations in loss, 



810 



,, production of, 812 

 ,, ,, increased by labour, 



813 



,, regulation of, by the nervous sys- 

 tem, 814 

 ,, increased production of, by injury 



to parts of the brain, 816 

 great, effects of, 818 



Heat and cold, sensations of, iv. 278280 

 ,, sejwrate terminal organs 



for, iv. 291 



,, ,, epidermal seat of sensa- 

 tions of, iv. 293 

 Helicotrema of cochlea, iv. 204 

 Hflinhohz's magnetic interrupter, 67 

 Hemianopsia, 1078 



Hemiplqfpa, crossed phenomena of, 1093 

 Henle's sheath of nerve fibre, 119, 175 

 ,, loop of in urinary tubule, 637 

 ,, its structure, 642 



,, sphincter of, 681 

 layer of, in hair follicle, 691 

 Hensen's body, iv. 218 

 Hepatic artery, 707 

 cells," 708 



,, their work, 713 

 ,, changes of, 719 

 ,, glycogen in, 720 

 plexus, 731 

 vein, temperature of blood in, 



808 

 Hering, his theory of colour vision, iv. 



9395 



,, ,, colour-blindness ex- 



plained by, iv. 102 



,, as to simultaneous 



and successive 

 contrasts, iv. 129 

 Hermann on muscle currents, 110 

 Hibernation, phenomena of, 820 

 Hiccough, 630 



Highmori corpus of testis, iv. 365 

 Hippocampus, structure of, 1031 

 Hippuric acid, its presence in urine, 650 

 ,, how formed in the kidney, 



672 



Histohsematin in red muscle, 98 

 Hopping, how effected, iv. 346 

 Horny layer of epidermis, 689 

 Horopter, the, iv. 153 

 Horse, sweat of, 695 

 Humour, aqueous, iv. 168 



,, ,, how furnished, iv. 1C9 



,, vitreous, iv. 170 

 Hunger and thirst, sensations of, iv. 285 

 Huxley's layer in hair follicle, 691, 692 

 Hydrochloric acid, free, in gastric juice, 



365 



Hydrogen, evolution of, in small intes- 

 tine, 478 

 Hyperpncea, 598 

 Hypoxanthin, presence of, in urine, 650 



Illusions, visual, iv. 157 

 tactile, iv. 305 

 Images, retinal, formation of, iv. 6 12 

 ,, ,, in relation to sensations 



excited by, iv. 12 

 ,, entoptical, iv. 52 



Impulses, nervous, 57, 123 



,, ,, electrical changes accom- 



panying, 123 



