1038 



Curve, respiratory movements, 645 



secretion of bile, 816 



systolic, diastolic, and mean blood- 

 pressures, 490 



velocity of blood-fiow, 485 



venous pulse, 527 



visual acuity of retina, 341 



work of muscle, 41 

 Cycloplegia, 325 

 Cystein, 789, 813 

 Cytozym, 460 



Dead space of lungs, 648 

 Deamidizing enzymes, 743 

 Death rigor, chemical changes during, 

 68 

 in muscle, 52 



theories of, 1013 

 Deep reflexes, 160 



sensibility, 274, 284, 285 

 Defecation, 728 



Degeneration in nerve-fibers, 124 

 Deglutition, 709 



nervous control of, 712 

 Deiters' ceUs in cochlea, 389 



nucleus, 212, 232 

 Demarcation current, muscle and 



nerve, 97 

 Demilunes of salivary glands, 747 

 Depressor nerve-fibers, 602 



of heart, 605 

 Derived proteins, 1026 

 Descending paths, spinal cord, 177, 



179 

 Deuteranopia, 352 

 Deutero-albumoses, 776 

 De Vries' theory of mutation, 1005 

 Dextrose, 908, 909 

 Diabetes mellitus, 887, 911 



pancreatic, 887, 911 



phloridzin, 913 



use of alcohol in, 932 

 Dialysis, definition of, 1031 

 Diaphragrri, action of, 639 

 Diaphragmatic respiration, 639 

 Diaschisis, 193 

 Diastase, 742 



discovery of, 737 

 Diastasis of heart, 548 

 Diastole, duration of, in heart, 552 

 Diastolic arterial pressure, 490 



method of determining, in ani- 

 mals, 492 

 in man, 497 

 Dicrotic pulse wave, 521 

 Diet, accessory articles of, 736, 927 



average daily, 942-944 



effect of reduction of salts in, 924 

 Dietetics, general principles of, 942 

 Diffusion circles on retina, 309 



definition of, 1026 



Digestion in large intestine, 802 



in small intestine, 783 



in stomach, 779 

 Diopter, definition of, 313 

 Dioptrics of eye, 302 

 Diplopia, 367, 370 

 Direct field of vision, eye, 338 

 Discord, physiological explanation of, 



400 

 Dissociation of oxyhemoglobin, 674 

 Diuretics, action of, 836 

 Dominant characteristics in heredity, 



1006 

 Dromograph, 482 



Dromotropic nerve-fibers to heart, 576 

 Dualistic theory (blood-corpuscles), 



439 

 Duct of Bartholin, 747 



of Rivinus, 747 



of Stenson, 747 



of Wharton, 747 



of Wirsung, 783 

 Duodenal bulb, 716 



tube, 809 

 Dyspnea, 642, 696 



Ear, effect of section of auditory 

 nerves, 406 

 of stimulation of semicircular 

 canals, 407 

 Eustachian tube of, 381 

 Flourens' experiments on semicircu- 

 lar canals, 403 

 functions in analyzing sound waves, 

 395 

 of cochlea, 395 

 of ear-bones, 384 

 of sacculus, 410 

 of utriculus, 410 

 intrinsic muscles of, 387 

 limits of hearing, 400 

 position of bones in, 384 

 projection of auditory sensations, 



388 

 semicircular canals of, 402 

 sensations of discord, 400 



of harmony, 400 

 sensory epithelium in cochlea, 389 

 structure of, 390, 396 



bones of, 384 

 theories of functions of semicircular 



canals of, 407 

 tympanic membrane of, 383 

 Eck fistula, 844 

 Efferent nerve-fibers, 81 



occurrence in anterior roots, 83 

 in cranial nerves, 85 

 Ejaculation of spermatic liquid, 1001 

 Elasticity and extensibility of muscle, 



20 

 Electrical changes in heart, 539, 689 



