INDEX. 



895 



Hemochromogen, 389, 400 

 Hemodromograph, 437 

 Hemoglobin, absorption spectra of, 

 394 



compounds of, with carbon dioxid, 



392 



with carbon monoxid, 391 

 with nitric oxid, 392 

 with oxygen, 391 



condition of, in corpuscles, 385 



crystals of, 393 



curve of dissociation of oxyhemo- 

 globin, 603 



derivative compounds of, 398 



iron in, 392 



nature and amount of, 389 

 Hemolysins, natural and acquired, 



387 



Hemolysis, 385 

 Hemorrhage, effect of, 425 

 Heredity, definition and history, 866 

 Hering theory of color vision, 333 

 Heterophoria, 340 

 Hexon bases, 863 

 Hippuric acid, 759 

 Histidin, 707, 874 

 Histohematins, 400 

 Histons, 863, 879 



effect of, on coagulation of blood, 



421 



Hofacker-Sadler law, 869 

 Homoiothermous animals, 821 

 Homolateral conduction in cord, 166 

 Horopter, 343 

 Hunger, sense of, 267 

 Hydrocele liquid, 411 

 Hydrochloric acid, function of, in pep- 

 tic digestion, 693 

 in gastric juice, 687 

 Hydrolysis, 662 



Hydrostatic factor in circulation, 465 

 Hypermetropia, 296 

 Hyperpnea, 622 

 Hypertonic solutions, 885 

 Hypnotic sleep, 248 

 Hypoglossal nerve, nucleus of, 230 

 Hypophysis cerebri, 778 

 Hypotonic solutions, 885 

 Hypoxanthin, 61, 756 



IDENTICAL points of retina, 340 

 Identity theory of nerve impulse, 



115 



Immune body, 388 

 Indican, 760 

 Indirect calorimetry, 827 



field of vision, eye, 313 

 Indol group in proteid molecule, 706 i 

 Indoxyl sulphuric acid, 719, 760 

 Induction coil, 23 

 Inert layer in circulation, 435 



Infundibular body, 778 



Inhibition, escape from, in heart. 



517 



of heart, 513, 527 

 of knee-jerk, 147 

 of reflexes, 139 



of respiratory movements, 616 

 reflex of heart, 517 

 theories of, 520 

 Inotropic nerves to heart, 516 

 Inspiration (see also Respiration) 

 definition of, 571 

 increased heart-rate during, 591 

 means of producing, 572 

 muscles of, 574 



Inspired air, composition of, 592 

 Internal secretion, adrenals, 775 



definition and historical account, 



771 



kidney, 782 

 liver, 771 

 ovary, 779 

 pancreas, 780 

 testis, 778 

 thyroid tissues, 772 

 sensations, 256 

 Intestinal movements, effect of 



various conditions upon, 648 

 secretion, 710 



Intestines, bacterial action in, 718 

 large, movements of, 648 

 nervous control of movements of, 



647 



reaction of contents of, 718 

 small, movements of, 644 

 Intracellular enzymes, 835 

 Intracranial pressure 556 

 Intrapulmonic pressure, 583 

 Intrathoracic pressure, 584 

 origin of, 586 



variations of, with forced breath- 

 ing, 585 



Intraventricular pressure, 484 

 Introductory contractions of muscle, 



33 



Invertase, 664, 711 

 in stomach, 697 

 Involuntary muscle, 52 

 lodothyrin, 773 

 Iris, action of drugs upon, 303 



antagonistic actionof muscles upon, 



304 



muscles and nerves of, 299 

 Iron in hemoglobin, 392 



salts, source and nutritive impor- 

 tance of, 803 



Irritability, definition of, 22 

 of muscle, 22 

 of nerve fibers, 80 

 Isodynamic equivalent of foodstuffs, 



817 

 Isometric muscular contractions, 27 



