1266 INDEX 



Pylorus, opening of, 697 

 Pyramidal cells of cortex, 427 



decussation, 352, 366 



tracts, 352, 366, 423 

 Pyrimidine, 103 



bases, 775 

 Pyrogallol, 50 

 Pyrrol ring, 85 



synthesis of, 118 

 a-pyrrolidin carboxylic acid, 85 

 pyruvic acid, 49, 762 

 origin of, 762 



QUADRI-TJRATES, 1118 



Quellung, 151 



RACEMIC compounds, 52 

 Kami communicantes, 468 

 Reaction, velocity of, 162, 163 

 of blood, 987, 1087 

 of degeneration, 269 

 time, 457 



Reactions, balanced, 166 

 reversible, 166, 169 

 Recapitulation, Law of, 13 

 ' Receptor ' substance, 276 



action of adrenaline on, 278, 1184 

 Recessive characters, 1215 

 Reciprocal innervation from cortex, 437 



of antagonistic muscles, 



335 



Recti muscles, 585 

 Red-blindness, 578 



corpuscles, see Blood 

 marrow, 834 

 nucleus, 377, 383 

 ' Red reflex,' 555 

 Reduced eye, 533 

 Referred pain, 476 

 Reflex action, Bahnung, 305 

 block in, 305 

 delay in, 303 

 facilitation of, 305 

 fatigue of, 304, 343 

 general characters of, 303 

 inhibition of, 306, 339 

 in spinal animal, 32.9, 332 

 localisation, 303 

 reinforcement, 341 

 successive spinal induction, 344 

 summation, 304 

 arc, 178, 295 

 movements, 177 



scratch-, 332, 343 

 time, 304 

 tone, 398 - 



Refractive indices in eye, 533 

 Refractory period, 273 

 Regnault and Reisers respiration apparatus, 



617 



Reissner's membrane, 516 

 Remaps ganglion, 940, 942 

 Renal excretion, 1110-1160 

 mechanism, 1149-1151 

 Rennin, 688 



Reproduction, 1199-1245 

 in man, 1217-1245 

 in metazoa, 1202 

 in protozoa, 1200 



Reproductive organs, development of, 1217 

 female, 1221 



Reproductive organs, male, 1219 

 Residual air, 1047 

 Resonants, 527 

 Resonators, 507 

 Respiration, 1039-1109 



apparatus, Benedict's, 617 

 Haldane's, 616 

 Peltenkofer's, 618 

 Regnault and Reiset, 617 

 Zuntz and Geppert, 618 

 chemistry of, 1051-1075 

 effects of changes in air on, 1C98-1 104 

 effect on circulation, 937 

 of deglutition on, 681 

 of division of vagi, 1089 

 movements, co-ordination of, 1076 

 rate of, 1041 



reflex regulation of, 1089-1097 

 ' Respiration of swallowing,' 677 

 Respiratory centre, 1077 



' automat icity of, 1078 

 chemical excitants of, 



1079-1081, 1087 

 inhibitory action of vagus 



on, 1092 

 spinal, 1078 

 stimulation of, by acids, 



1087 

 by oxygen lack, 



1083 



exchange, total, 616 

 movements, chemical regulation of, 



1079-1089 



Head's method, 1089 

 mechanics of, 1039-1050 

 regulation of, 1076-1097 

 muscles, 1043 

 quotient, 640, 1051 



effect of foods on, 641 

 in diabetes, 809 

 in hibernation, 794 

 in muscular work, 217 

 sounds, 1045 

 Restiform body, 368, 402 

 Rete mucosum, 1161 

 Reticulin, 107 



Retina, chemical changes in, 564 

 development of, 558 

 physical changes in, 564 

 structure of, 559 



Retinal changes in vision, 558-567 

 image, path of rays, 534 

 induction, 582 

 Retractor lentis, 548 



penis muscle, 247, 1229 

 Retrograde degeneration, 320 

 Reverser, PohVs, 188 

 Reversibility of ferment action, 166, 168 

 Revertose, 167, 168 

 Rheocord, 192 

 Rheonome, 270 

 Rheoscopic frog, 233 

 Rheotaxis, 1228 

 Rhinecephalon, 421 

 Rhodopsin, 559, 565 

 Rhombencephalon, 362 

 Ribs, movements of, 1042 

 Ricin, 1031 



Rigor mortis, 208, 214. 

 Rima glottidis, 521 

 Ringer's fluid, 963 



