936 



INDEX. 



Respiration, vital capacity, 600 



volumes of air respired, 600 



voluntary control of, 639 

 Respiratory center, 631, 639 

 automatic activity of, 633 

 normal stimulus of, 640 

 reflex stimulation of, 633 



quotient, 652 



waves of blood-pressure, 609 

 Retina, action current of, 317 



acuity of vision in, 323 



after-images from, 331 



color blindness of, 333 

 contrasts in, 332 

 vision in, 328 



corresponding points of, 350 



distribution of color sense in, 336 



entopic phenomena, 344 



function of rods and cones of, 337 



fundamental and complementary 

 colors, 330 



light adapted and dark adapted, 

 326 



portion of, stimulated by light, 316 



projection of, on occipital lobes, 197 



qualities of visual sensations from, 

 328 



size of fovea in, 323 



theories of color vision in, 340 



threshold stimulus of, 325 



visual purple of, 318 

 Retinoscope, 313 



Reversible chemical reactions, 680 

 Rheoscopic frog preparation, 99 

 Rhodopsin, 318 



Ribs, action of, in inspiration, 594 

 Rigor of muscle, 49, 51, 62, 66 

 Ringer's solution, 520 

 Ritter's tetanus, 86 

 Rivinus, ducts of, 687 

 Rods and cones of eye, functions of, 



337 



Romberg's symptom, 224 

 Rubrospinal tract, 171, 187 



SACCULUS, functions of, 389 

 Saliva, chorda, 692 

 composition of, 690 

 digestion action of, 700 

 general functions of, 702 

 secretory nerves for, 691 

 sympathetic, 692 

 Salivary glands, action of drugs upon, 



697 



anatomical relations, 687 

 histological changes during ac- 

 tivity, 694 

 structure of, 687 

 normal stimulation of, 698 

 secretory centers for, 699 



nerve fibers of, 691 

 theory of secretory nerves, 693 



Salts, absorption of, in stomach, 719 



excretion of, 782, 833 



general nutritive importance of, 832 

 Sarcolactic acid, 60 

 Sebaceous glands, secretion of, 791 

 Secondary axes of a lens, 288 



degeneration, nerve fibers, 117, 158 



proteoses, 714, 912 

 Secretin, gastric, 711 



pancreatic, 724 

 Secretion, 687 



internal, 793 



paralytic (saliva), 698 



of bile, 748 



of gastric juice, 708 



of intestinal juice, 731 



of pancreatic juice, 722 



of saliva, 691 



of sebaceous glands, 791 



of sweat, 788 



of urine, 772 



Secretogogues of gastric glands, 710 

 Secretory nerves of salivary glands, 



691 



Semicircular canals, direct stimula- 

 tion of, 384 



Flourens's experiments upon, 383 

 structure of, 382 

 temporary and permanent effects 



of operations on, 384 

 theories of functions of, 385 

 Seminal vesicles, function of, 894 

 Senescence, 904 

 Senses, classification of, 252 



cutaneous and internal, 259 

 Sensory aphasia, 208 



areas of cortex, 190 



paths in spinal cord, 162, 165 

 Sequence of heart beat, 525 

 Serin, 907 

 Serum, action of foreign, 398 



-albumin, 422 



-globulin, 423 



Seventh cranial nerve, nucleus of, 232 

 Sex, determination of, 901 

 Side-pressure in blood-vessels, 473 

 Sixth cranial nerve, nucleus of, 232 

 Skatoxylsulphuric acid, 740, 782 

 Skeletal muscular tissue, physiology 



of, 18 



Skiascope, 313 

 Skin, excretory functions of, 788 



sweat glands of, 788 

 Sleep, changes in circulation during, 

 245 



curves of intensity of, 243 



effect of sensory stimulation dur- 

 ing, 246 



hypnotic, 251 



metabolism during, 842 



physiological phenomena of, 241 



theories of, 247 



