1574 



INDEX. 



Heart, pressure in ventricle, the phases, 



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, 277 

 relation of to rhyth- 



mic power, 284 



,, sequence of events in beat of, 282 

 power of independent rhythm in 



the several parts, 282-284 

 charactersof the contraction of mus- 

 cular fibres of, 285-288 

 ,, rhythmic power resident in muscu- 

 lar 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-inhi- 



bitory 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, 303 

 ,, relations of with vaso-motor 



system, 351 

 normal rate of, 346 

 slowing effects of venous blood 



on, 621 



during asphyxia, 626 

 of the babe, 1543 

 death marked by cessation of, 



1556 



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 system , 



814 

 ,, increased production of, by injury 



to parts of the brain, 816 

 great, effects of, 818 



Heat and cold, sensations of, 1416-1418 

 ,, ,, separate terminal organs 



for, 1429 



,, ,, epidermal seat of sensa- 

 tions of, 1431 



Helicotrema of cochlea, 1342 

 Helmholtz's magnetic interrupter, 67 

 Hemianopsia, 1078 



Hemiplegia, 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, 1356 

 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, 1231- 



1233 



,, ,, colour-blindness ex- 



plained by, 1240 



,, as to simultaneous and 



successive contrasts, 

 1267 



Hermann on muscle currents, 110 

 Hibernation, phenomena of, 820 

 Hiccough, 630 



Highmori corpus of testis, 1503 

 Hippocampus, structure of, 1031 

 Hippuric acid, its presence in urine, 650 

 , , how formed in the kidney, 



672 



Histohaematin in red muscle, 98 

 Hopping, how effected, 1484 

 Horny layer of epidermis, 689 

 Horopter, the, 1291 

 Horse, sweat of, 695 

 Humour, aqueous, 1306 



how furnished, 1307 



vitreous, 1308 

 Hunger and thirst, sensations of, 1423 

 Huxley's layer in hair follicle, 691, 692 

 Hydrochloric acid, free, in gastric juice, 



365 



Hydrogen, evolution of, in small intes- 

 tine, 478 

 Hyperpnoea, 598 

 Hypoxanthin, presence of, in urine, 650 



Illusions, visual, 1295 

 tactile, 1443 



Images, retinal, formation of, 1144-1150 

 ,, ,, in relation to sensations 



excited by, 1150 

 ,, entoptical, 1190 

 Impulses, nervous, 57, 123 



,, ,, electrical changes accom- 



panying, 123 



