INDEX 



Head on cutaneous sensibility, !',).'> 

 Head's diaphragm slip, 1089 

 Hearing, end-organ of, 5 1 4 

 Helmholtz's theory, 5 1 7 

 physiology of, 511 

 Rutherford's theory, 518 

 telephone theory, 518 

 Waller's theory, 519 



Heart, action of sympathetic nerves on, 975 

 action of vagus, 971 

 changes in form, 902 

 diastolic filling, 909 

 effect of calcium on, 963, 975 

 muscarine on, 974 

 nicotine on, 974 

 potassium on, 963, 975 

 electrical variations, 230 

 frog's, automatic contraction, 940 

 human, electrocardiogram of, 953 

 influence of temperature on rate of, 962 

 inhibition of, 972 



mammalian, ganglion-cells in, 949 

 mechanism of, 891-917 

 nerve fibres in, 946 

 nutrition of, 966 

 primitive vertebrate, 950 

 rate in exercise, 1007 

 reflexes, 978 

 sounds, 905 



graphic record of, 907 

 systolic output, 910-915 

 theories of inhibition of, 974 

 work of, 915-917 

 Heart-beat, causation of, 939-968 

 contraction wave, 947-949 

 electrometer records of, 948 

 in mammals, 949-955 

 myogenic hypothesis, 942 

 neurogenic hypothesis, 941 

 propagation of contraction in, 943 

 significance of carbon dioxide for, 965 

 Heart-block, 955 

 Heart-fibrillation, 968 

 Heart-lung preparation, Starling's method, 



911 

 Heart-muscle, ' all or none ' phenomenon, 



955 



excitation of, 955 

 influence of tension on, 958 



of chemical substances on, 962 

 physiological properties of, 955958 

 refractory period of, 956 

 summation of stimuli in, 956 

 Heart-musculature, 891 

 Heat -coagulation, 150 

 Heat-engines, efficiency of, 234 

 Heat-loss, regulation of, 1174 

 Heat, production in body, 1171 

 in muscle, 219 

 regulation, nervous mechanism of, 1176 



in new-born, 1177 

 rigor, 208, 214 



sensations, conduction in cord, 359 

 sexual, in animals, 1226 

 spots, 487 



values of food-stuffs, 619 

 Heats of combustion, 156 

 Heller's test, 95, 1122 

 Helmholtz resonators, 508 



side wire, 189 

 Helweg's bundle, 353 



1257 



iii. 44<> 

 Hemianopia, 407, 447 

 Hemiplegia, 446 

 Henle's loop, 1132 

 Hensen's disc, 182 

 Heredity, 1212-1216 



basis of, 20 



Hering's theory of colour-vision, 579 

 Herpes zoster, causation of, 999 

 Heterdalbumose, 100 

 Heterocyclic amino-acids, 85 

 Heterotype mitosis, 1207 

 Hexachromic vision, 580 

 Hexone bases, 83 

 Hexoses, 61 



classification of, 61 

 derivatives of, 64 

 reactions of, 62 

 Hind-brain, 362, 366-373 

 Hippocampal commissure, 427 

 Hippocampus, 419 

 Hippuric acid, 770, 1119 

 Hirudinised blood, 840, 849 

 His' bundle, 893, 952 

 Histidine, 86, 91, 104 



fate of, 772 

 Histological differentiation, 7, 31 



localisation in cortex, 431 

 Histones, 92, 97, 101 

 Hoffmann's test, 85 

 Homans on islets of Langerhans, 807 

 Homogentisic acid, 51, 770, 1124 

 Homoiothermic animals, 1169 

 Hopkins' test for lactic acid, 215 

 for tryptophane, 94 

 Hopkins -Adamkiewicz reaction, 94 

 Hormones, genital, 1218 

 mammary, 1218 

 nature of, 1180 

 pancreatic, 709 

 Horopter, 588 



Hiifner's method for urea estimation, 1126 

 Human stomach, form and movements, 698 

 Hurihle's manometer, 897 

 Hyaline corpuscles, 813 

 Hyaloid membrane, 543 

 Hyaloplasm, 18 

 Hydrsemic plethora, 1009 



effect on volume of 



urine, 1140 



Hydrated proteins, 99 

 Hydrazones, 62 

 Hydrocarbons, 45 



unsaturated, 46 

 Hydrocele fluid, 849 



Hydrochloric acid in gastric juice, 684, 685 

 Hydrogels, 72, 140 

 Hydrogen, 39 

 Hydrogen ion concentration, determination 



of, 1067 

 Hydrolysis, 154 



of casein, 80 

 of proteins, 76, 80, 99 

 Hydroquinone, 50 

 Hydrosols, 139 



osmotic pressure -of, 142 

 properties of, 142, 144 

 Hyperglycsemia, 805 

 Hypermetropia, 535 

 Hyperpncea, 1079 

 Hypoblast, 33 



