INDEX. 



929 



Heat, sexual, in lower animals, 875 

 Helmholtz theory of color vision, 340 

 Helweg's bundle, spinal cord, 172 

 Hematin, 402, 411 

 Hematoidin, 412 

 Hematopoietic tissue, 413 

 Hematoporphyrin, 412 

 Hemeralopia (night-blindness), 339 

 Hemin, 411 

 Hemipeptone, 726 

 Hemiplegia, 186 

 Hemochromogen, 401, 412 

 Hemodromograph, 450 

 Hemoglobin, absorption spectra of, 

 406 



compounds of, with carbon dioxid, 



404 



with carbon monoxid, 403 

 with nitric oxid, 403 

 with oxygen, 403 



condition of, in corpuscles, 396 



crystals of, 405 



curve of dissociation of oxyhemo- 

 globin, 624 



derivative compounds of, 410 



iron in, 404 



nature and amount of, 401 

 Hemolysins, natural and acquired, 



398 



Hemolysis, 397 

 Hemorrhage, effect of, 437 

 Heredity, definition and history, 899 

 Hering theory of color vision, 341 

 Heterophoria, 349 

 Hexon bases, 896 

 Hippuric acid, 781 

 Histidin, 728, 907 

 Histohematins, 412 

 Histons, 896, 912 



effect of, on coagulation of blood, 



434 



Hofaeker-Sadler law, 902 

 Homoiothermous animals, 853 

 Homolateral conduction in cord, 168 

 Hormones, 711 

 Horopter, 353 

 Hunger, sense of, 270 

 Hydrocele liquid, 423 

 Hydrochloric acid, function of, in pep- 

 tic digestion, 713 

 in gastric juice, 707 

 Hydrolysis, 683 



Hydrostatic factor in circulation, 478 

 Hyperglycemia, 822 

 Hypermetropia, 300 

 Hyperpnea, 643 

 Hypertonic solutions, 918 

 Hypnotic sleep, 251 

 Hypoglossal nerve, nucleus of, 233 

 Hypophysis cerebri, 801 

 Hypotonic solutions, 918 

 Hypoxanthin, 61, 777, 779 



59 



IDENTICAL points of retina, 350 

 Identity theory of nerve impulse, 116 

 Immune body, 400 

 Incongruence of retinas, 351 

 Indican, 782 



Indirect calorimetry, 859 

 field of vision, eye, 321 

 Indol group in protein molecule, 728 

 Indoxyl sulphuric acid, 740, 782 

 Induction coil, 23 

 Inert layer in circulation, 448 

 Infundibular body, 801 

 Inhibition, escape from, in heart, 536 

 of heart, 531 

 of knee-jerk, 148 

 of reflexes, 140 



of respiratory movements, 637 

 reflex of heart, 536 

 theories of, 539 

 Inotropic nerves to heart, 535 

 Inspiration (see also Respiration) 

 definition of, 592 

 increased heart-rate during, 612 

 means of producing, 593 

 muscles of, 595 



Inspired air, composition of, 613 

 Intermediary products of muscle 



metabolism, 64 



metabolism of carbohydrates, 824 

 of fats, 826 



of nucleo-proteins, 816 

 of proteins, 811 

 Internal secretion, adrenals, 798 



definition and historical account, 



793 



kidney, 806 

 liver, 794 

 ovary, 802 

 pancreas, 804 

 sensations, 254 

 testis, 802 

 thyroid tissues, 794 

 Intestinal movements, effect of va- 

 rious conditions upon, 669 

 secretion, 731 



Intestines, bacterial action in, 739 

 large, movements of, 670 

 nervous control of movements of, 



669 



reaction of contents of, 739 

 small, movements of, 666 

 Intracellular enzymes, 868 

 Intracranial pressure, 576 

 Intraocular pressure, 310 

 Intrapulmonic pressure, 604 

 Intrathoracic pressure, 605 

 origin of, 607 



variations of, with forced breath- 

 ing, 606 



Intraventricular pressure, 502 

 Introductory contractions of muscle, 

 33 



