INDEX. 



1031 



Digestion, effect of condiments and flavors upon, 



298 



of stimulants upon, 29.7 

 formation of bile during, 189 

 gastric, 225-237 



proteoses of, 1018 



influence of, on body-temperature, 578 

 on heat-production, 591 

 on the volume of gases respired, 539 

 intestinal, 238-248 



action of the intestinal juice upon, 247 

 secretions acting in, 238 

 normal, flow of gastric secretion during, cause 



of, 181 



physiological value of saliva on, 224 

 object of the processes of, in the alimentary 



canal, 213 

 of fats, 235, 289 

 pepsin-hydrochloric acid, 229, 240 



product of, 255 

 peptic, 240 



action of bile on, 266 

 end-products of, 229, 230 

 in the stomach, 228 

 steps in, 230 

 study of artificial, 229 

 physiology of, 217 

 products of, routes of absorption of the, 



250 

 proteid, 285 



end-products of, 255, 350, 1021 

 proteolytic, Kiihne's theory of, 231, n. 



Neumeister's schema, 243, n. 

 salivary, 220, 224 



stomach, movements of the, during, 316 

 of carbohydrates, 235 

 of fats, 235 



processes of, schema of, 242 

 products of, 240, 255 

 the, not essential in, 237 

 tryptic, 240 



Digestion and nutrition, chemistry of, 213-304 

 Dioptric system, 746-748 

 Dioxide, carbon, 961 



silicon, 963 

 Dioxyacetone, 1001 

 Disaccharides, the, 247, 1006 

 Discord, 831 



Diseases, infectious, transmission of, 935, 936 

 Distance-perception, retinal, 799 

 Dress, adaptation of, to climate, factors in, 593 

 Drowning, death from, causation, 553 

 Drugs, action of, upon the salivary glands and 



their secretions. 170 

 application of, to the eye, effects of, 771 



upon the mechanism of eye-accommoda- 

 tion, 757 



effect of, upon body-temperature, 580 

 upon heat-dissipation, 596 

 upon heat-production, 592 

 upon intestinal movements, 323 

 upon the sweat-glands, 200 

 Drugs and chemicals, effect of, on conduction, 



94 



upon muscular contraction, 128 

 upon the irritability of nerve and muscle, 



67 



Drum-skin (ear), 809 



Du Bois-Reymond law of electric nerve irrita- 

 tion, 47 



Duct of Bartholin, 158 

 of Wirsung, 172 

 of the gastric gland, 179 

 Ducts, gland-. See Gland-ducts. 

 lymphatic, 362, 437 

 of Rivinus, 158 

 of the testis, 886 



Ducts of the mammae, 201 



pancreatic, 172 



See Secretion. 

 Dumbness, 871 

 Dyslysin, 987 

 Dyspnoea, cardiac, 555 



COs, cause of, 550, 551 



defined, 548 



forms and causation of, 550, 552 



hemorrhagic, 555 



EAR, analysis of composite tones by the, 828 

 anatomy and histology of, 807-824 

 of external, 807 



external auditory meatus, 807 

 the concha, 807 

 the pinna or auricle, 807 

 of internal, 815-S24 

 of middle, 810-815 

 auditory ossicles, 810 

 Eustachian tube, 814 

 muscles of the middle ear, 814 

 tympanic membrane, 809 

 tympanum, 808 



different parts of the, functions of, 832 

 fatigue of the, to sound, 831 

 imperfections of the, to sound-perception, 832 

 judgment of direction and distance by the, 833 

 muscles of the middle, 814 

 perception of time-intervals by the, 832 

 sensitiveness of the, to difference in musical 



pitch, 829 



Elasticity, muscle-, 104-106 

 Elastin, 1020 

 Electric circuiting, 45 

 current as an irritant, conditions determining 



the efficiency of the, 43-64 

 effect of, 43-60 



constant, effect of, on conduction, 94 

 effect of the, on the irritability and con- 

 ductivity of muscle and nerve, 61 

 direct, stimulating effect of making and 

 breaking the, on muscle and nerve, 50 

 effect of opening and closing the, on normal 



human nerve, 63 



of rate of alternations of, Tessla's experi- 

 ments, 58 

 upon muscles, 68 

 upon nerves, 69 

 upon the irritability of nerve and muscle, 



67 



irritating effect of, on muscle and nerve, 43 

 angle of application, 58 

 density of current, 56 

 direction of flow, 60 

 duration of application, 56 

 rate at which the intensity changes, 46 

 strength of current, 54 

 Galvani and Volta's experiments, 43 

 relation of the method of application of, 



to the, 59 

 relative efficacy of the different methods 



of application upon the power of, 59 

 strength of, altering the, methods of, 55, 56 

 Electric currents, effect of, upon normal human 



nerves, 62 

 induced, irritating effect of, on muscle and 



nerve, 48 

 practical application of alterations produced 



by, on conduction, 95 

 reaction of muscles and nerves to, 57 

 key, Du Bois-Eeymond, 45 

 Electrode, the, 44 

 Electrometer, capillary, 136 

 Electrotonus, 69 



Elements (chemic), metallic, of the body : 

 ammonium, 967 



