None
Rheonome of Von Fleischl, 513 Rheotome, differential, 514 Rheoscope, physiological, 516 Rhodopsiu or visual purple, 713, 732 Ribs, action in respiration, 313 Rigor mortis, 472 and tetanus, 482 cause of, 472 influence of fatigue, 474 influence of temperature, 472 Rolando, flssure of, 571 Rosette, 21 Saccharoses, 28 Saccule, 698 Saliva, 60 action on starch, 60 composition of, 62, 63 ferment of, 60 mechanical function of, 57 reaction of, 62 reflex centers, 65 specific gravity of, 62 temperature variations in, 62 time of activity, 62 Salivary glands, 54, 55, 63 action of, 62 of drugs on, 63 Berves to, 63, 64 Pawlow's experiments, 65 reflex centers of, 65 structure of, 55 trophic and secretory flbers, 64 Salts, 27, 88 in body, 27 in metabolism, 428 in urine, ,406 Santorini's' cartilage, 493 Saponifloation, 30 Sarcolactic acid, 470 Sarcolemma, 458 Sarcomeres, 460 Sarcoplasm, 460 Sarcostyles, 460 Scala tympani, 683 Scala vestibuli, 683 Scapular reflex, 607 Schafer's artificial respiration, 337 Schuetz's law, 73 Scheiner's experiments, 730 Schmidt, segments of, 531 Schwann, white substance of, 530 Science, 2 biological, 2 physical, 2 Scleroproteins, 36 Sclerotic coat, 700 Sebaceous glands, 661 function of, 662 Secretin, 97 Secretion, 355 adrenal, 365 by filtration, 355 by filtration proper, 356 by glandular desquamation, 356 external. Sodium chloride, 27 in blood, 189 in urine, 406 substitutes tor, 27 Solitary glands, 89 Solutions, gram molecule, 137 Somatose, 82 Sound, 497 height of, 497 intensity of, 49 production and modiflcation ot, 491 resonance of, 498 timbre, 498 Sound-waves, course ot, 693 conduction ot, 690 Sounds ot heart, 221 variation in, 225 Special cell-constituents, 7 sensation, laws of, 653 senses, 650 Spectra of blood, 184 Spectroscope, 183 Spectroscopic test for blood, 199 Speech, 499 aphonia, 500 center of, 501 detects ot, 500 hoarseness, 500 stammering, 600 stuttering, 500 ventriloquy, 499 Spermatogenic cells, 773 Spermatozoon, 774 structure of, 774 Sphenopalatine ganglion, 759 Spherical aberration, 722 Sphincter ani, 127 Sphygmogram, 259 Sphygmograph, 257 Marey's, 257 Sphygmometers, 269 Erlanger's, 271 Mosso's, 270 Riva-Rocci's, 270 Sphygmomanometers, 269 Spinal accessory, 767 distribution, 767 function, 768 origin, 767 pathology, 768 physiology, 768 Spinal cord, 536 anterior median groove, 538 anterior roots, 538, 605 antero-posterior lateral grooves, 538 blood-supply, effect ot, 602 centers in, 608 central canal, 544 columns of, 545 conduction of, 603 commissures ot. INDEX. 815 Vision, color vision, 735 complementary colors, 735 crystalline lens, 709 Daltonism, 735 dioptrics, 721 liypermetropia, 724 irradiation, 736 lacrymal secretion, 742' lenses, 726 lymphatics, 718 movements of eyes, 740 myopia, 724 ophthalmoscope, 742 optic nerve, 713 perception of light, 720 perimeter, 743 phosphenes, 737 presbyopia, 724 retina, 710 retinal epithelium, 713 rhodopsin, 713, 732 sensation of color, 734 Snellen's test-types, 731 spherical aberration, 722 transmission of light, 699 visual angle, 370 apparatus (see eye), structure of, 700 purple, 713 area, 743 field, 746 line, 730 Vital capacity, 319 Vitellin, 39 Vitreous humor, 716 Vocal cords, 493, 496 conditions of, 496 false, 493 true, 493 Voice and speech, 497 height of, 497 organ of, 496 range of, 498 Vomiting, 83 causes, 84, 621 mechanism of, 83, 84 nerve center, 84 Von Bezold's ganglion, 232 Vowels and consonants, 499 WALLBEIAN degeneration, 604 Warm-blooded animals, 437 Water, 26 daily amount, 26 drinking, 26 in faeces, 125 , in metabolism, 428 Weber's schema of circulation, 251 Wheat, 43 Whey, 41 Widal reaction, 294 White columns, 545 White corpuscles (see blood-corpuscles), 170 Wine, 44 Wing muscles of insect, 461 Wirsuhg's duct, 94 Word-centers, 501, 627 auditory, 501, 626 visual, 500, 626 Work, effect upon destruction of proteid, 474 Wrisberg's cartilages, 493 Xanthin in urine, 402 Xanthoproteic test for proteids, 35 YAWN, 339 Zonule of Zinn, 723 Zymogen, 95 Zymoids, 291. 