926 



INDEX. 



Diuretics, action of, 769 



Dromograph, 450 



Dromotropic nerve fibers to heart, 



535 

 Duct of Bartholin, 687 



of Rivinus, 687 



of Stenson, 687 



of Wharton, 687 



of Wirsung, 721 

 Dyspnea, 596, 643 



EAR, effect of section of auditory 

 . nerves, 385 

 of stimulation of semicircular 



canals, 384 



Eustachian tube of, 369 

 Flourens's experiments on semi- 

 circular canals, 383 

 functions in analyzing sound waves, 



376 



of cochlea, 376 

 of ear-bones, 365 

 of sacculus, 389 

 of utriculus, 389 

 intrinsic muscles of, 368 

 limits of hearing, 380 

 position of bones in, 365 

 projection of auditory sensations, 



370 



semicircular canals of, 382 

 sensations of discord, 379 



of harmony, 379 



sensory epithelium in cochlea, 370 

 structure of, 371, 377 



bones of, 365 



theories of functions of semicircu- 

 lar canals of, 385 

 tympanic membrane of, 364 

 Eck fistula, 775 

 Efferent nerve fibers, 75 



occurrence in anterior roots, 77 

 in cranial nerves, 79 

 Ejaculation of spermatic liquid, 897 

 Elasticity and extensibility of muscle, 



19 

 Electrical currents during heart beat, 



497 



Electrocardiograms, 498 

 Electrodes, non-polarizable, 95 



stimulating, 81 

 Electrolytes, effect of, on osmotic 



pressure, 916 

 Electrotonic currents, 101 

 Electrotonus, 83 

 Eleventh cranial nerve, nucleus of, 



233 



Embryo, nutrition of, 885 

 Endogenous fibers of spinal cord, 163 

 Energy of muscular contraction, 34 

 Enterokinase/725, 732 

 Entoptic phenomena, 344 

 Enzymes, adenase, 685, 779 



Enzymes, amylopsin, 729 



arginase, 776 



chemistry of, 685 



classification of, 682 



definition of, 682 



enterpkinase, 725, 732 



erepsin, 728, 732 



general properties of, 684 



glycolytic, 685, 806, 824 



guanase, 685, 779 



historical account of, 678 



intracellular, 868 



inverting, 732 



lipase, 730 



of muscle, 61 



oxidases, 683, 866 



pepsin, 711 



peroxidases, 867 



ptyalin, 700 



rennin, 715 



reversible reactions of, 680 



specificity of, 682 



thrombin, 428, 431 



trypsin, 726 



Epicritic sensations, 260 

 Epigenesis, 899 

 Epinephrin, 800 

 Erection, physiology of, 896 

 Erepsin, 728, 732 

 Ergograph, 45 

 Erythroblasts, 413 

 Erythrocytes (see Red corpuscles') 

 Erythrodextrin, 701 

 Eserin, action of, on iris, 308 

 Esophoria, 349 

 Ethereal sulphates, 781 

 Eupnea, 596 

 Eustachian tube, 369 

 Evolution, hypothesis of, in heredity> 



899 



Excretin, 742 



Exogenous fibers in spinal cord, 163 

 Exophoria, 349 

 Expiration (see also Respiration') 



definition of, 592 



expiratory center, 639 



muscles of, 595 

 Expired air, composition of, 613 



injurious effects of, 614 

 Extensibility of muscle, 19 

 External geniculates, 196, 199 

 Eye, abnormalities in refraction of, 

 299 



accommodation in, 293 



action of drugs upon, 308 



acuity of vision in, 323 



after-images in, 331 



as optical instrument, 286 



binocular field of vision, 350 

 perspective, 356 



chromatic aberration in, 298 



color blindness of, 333 



