INDEX 



547 



Krinak, fibers of, 57 



Rennin, 192 



Repair, organic, 219 



Repression of organic emotional reactions, 



409 

 Reproduction, 44, 428 



asexual, 428 



of Ameba, 50 



of Daphnia, 468 



sexual, 428 

 Reserve air, 128 

 Residual air, 128 

 Respiration, 34, 100 



changes of the blood in, 113, 115 



consumption of oxygen in, 101, 113 



cutaneous, 129, 323 



diffusion of air in lungs, 117 



exhalation of carbon dioxide in, 101 



experiments on, 476 



external, 100 



in Ameba, 50 



in amphibians, 130 



in childhood, 452 



in Daphnia, 467 



in old age, 455 



in the excised tissues, 101 



in the fetus, 128 



in hibernation, 236 



inhalation of poisonous gases, 257 



internal, 113 



intestinal, 130 



mechanism of, 103 



movements of Ameba dependent on, 

 50, 109 



nerves of, 111 



organs of, 103 



of pure oxygen, 103 



rates of, in various animals, 124 



relations between the oxygen con- 

 sumed and the carbon dioxide ex- 

 haled, 103 



sounds of, 125 



sources of carbon dioxide in, 251 



through the skin, 129, 323 



volumes of inspired and expired air, 



103, 128, 131 

 Respiratory centers, 111 



exchange, daily, 103 



quantities, 128 



sounds, 125 

 Rest, 421 



Restiform body, 76 

 Retardation of circulation, 282 

 Retina, 336 

 Rheocord, 471 

 Rheotaxis, 43, 441 

 Rhodopsin, 337 

 Rhythm, cardiac, 286 



respiratory, 120 

 Rhythmic segmentation, 201 

 Ribs, 109 

 Rigor mortis, 382 

 Rod-cells, 337 

 Rods, 337 

 Rolanclic area, 70 



Rontgen rays, production of aspermia by, 



439 

 Roots, anterior, 90, 510 



posterior, 91, 510 

 Rotation-point, 340 

 Round ligament, 439 

 Ruffini, nerve-endings of, 365 

 Ruminant's stomach, 183 

 Running, 393 



SACCHAROSES, 30 



Sacral system of the autonomies, 97 



Saliva, 173 



action of, on starch, 189 



mechanical action of, 178 

 Salts, "inorganic," 30, 33 



absorption of, 217, 218 

 excretion of, 246 

 metabolism of, 220 

 Sarcolactic acid, 241 

 Sarcolemma, 380 

 Sarcomeric imbibition, 384 

 Sarcostyles, 380 

 Savors, 363 



Schneiderian membrane, 359,*362 

 Schwann, sheath of, 57 

 Sebaceous glands, 321 



matter, 321 

 Sebum, 321 



composition of, 321 



uses of, 322 

 Second heart-sound, 292 



nerve, 88, 339 

 Secretin, 253 

 Secretion, 41, 220 



change in the circulation of the 

 glands during, 224, 301 



control by sympathetic, 95 



mechanism of, 220, 224 

 Secretions, classification of, 224 

 Segment, neural, 79 

 Semen, 438 



Semicircular canals, 346, 347, 369 

 Senescence, 454 

 Senility, diet in, 158 

 Sensation, 404, 415 



number of varieties of, 404 



of 'the skin, 316 

 Senses, 327 



in old age, 456 



of Ameba, 49 



of children, 452 



of Daphnia, 467 

 Sensory cortical zone, 71 

 Sequence of cardiac events, 288 



of respiratory events, 116 

 Serum-albumin, 30, 255 

 Serum-globulin, 30, 115 

 Seventh nerve, 88 

 Sexual desire, occasion of, 439 

 Sheath of Schwann, 57 

 Sighing, 125 

 Signal, 472 



