1334 



INDEX. 



fected by temperature, 646 ; absorption 



of, in infancy, 1147 

 Oxyhaemoglobin defined (footnote) , 454 ; 



colour of, 456 

 Oxyntic gland of frog, 352 



Pacchionian glands, 825 



Pain, sense of, 1044-1050 ; localization of, 

 1045 ; special nerve-endings not needed 

 for, 1047 



'' Pains " of labour, 1137 



Pallor caused by emotion, 286 



Palmitin, present in blood, 47 ; a constit- 

 uent of animal fat, 606 



Palpitation of heart, its causes, 302 



Pancreas, histological changes during se- 

 cretion, 340; of dog, 341 



Pancreatic juice, its action on food-stuffs, 

 359-362; on fats, 362; on proteids, 

 362; secretion of, 365; circumstances 

 affecting, 366 ; trypsin a constituent of, 

 349 ; its composition, 358 



Panniculus adiposus, 604 



Paraglobulin, a constituent of blood- 

 serum, 19; precipitated from plasma, 

 23 ; in white corpuscles, 38 



Parapeptone, 326 



Paraphlegia, reflex action in, 706 



Parotid gland, nerve supply to, 338 ; cell- 

 changes in, 342 



Parturition, 1136-1143; mechanisms of, 

 1137 ; a reflex act, 1140 ; inhibition of, 

 1142 



Peduncles of the cerebellum, 812 



Pendulum myograph, 66, 68 



Penis, erection of, 1116 ; nerves concerned 

 in mechanism of, 1116; striated mus- 

 cles assisting, 1116; nervous centre 

 for, 1117 



Pepsin, the ferment body of gastric juice, 

 329; proteids converted into peptone 

 by, ib. ; secreted by the ' chief ' gas- 

 tric cells, 352; in the foetal gastric 

 membrane, 1130 



Pepsinogen, an antecedent of pepsin, 350 



Peptone formed from proteids by gastric 

 juice, 321, 325; by pancreatic juice, 

 329 ; test for, 325, 326 ; its absence from 

 chyle, 416; its course during absorp- 

 tion, 416 ; as food, 629 



Perceptions, visual, time required for, 

 823; and judgments, 959; psychical 

 modifications of, 931 

 and judgments, auditory, 1006, 1023 ; 

 olfactory, 1025 ; tactile, 1066 



Pericardial fluid, its persistent fluidity 

 in pericardial bag, 28 



lVri..,Hc events of life, 1153 



Peripheral region, blood -pressure in, 161 



resistance, defined, 163; its action 



in the circulation, 170; illustrated 

 by model, 167; lowered by action 



of depressor nerve, 281 ; affected by 

 vaso-motor changes, 275 ; by condi- 

 tion of vascular walls, 294 ; by changes 

 in character of blood, ib. 



zone, in capillary contents, 290; 



white corpuscles present in, 291 ; 

 blood platelets in, during inflamma- 

 tion, 292 



Peristaltic contractions of plain muscle, 

 131 



movements of alimentary canal, 371 ; 



excited by stimulation of vagus, 383; 

 influences bearing on, 386; of ureter, 

 544 ; of bladder, 547 



Personal equation as affecting reaction- 

 time, 819 



Perspiration, nature and amount of, 550 ; 

 secretion of, 555; regulation of tem- 

 perature by, 642 



Pfliiger's gas-pump, 445 



Phagocytes, 44 



Phakoscope, Helmholtz's, 852 



Phantoms, ocular, 937; auditory, 1020; 

 tactile, 10(59 



Phases of life, 1144 



Phenol, a bacterial product in digestion, 

 394 ; compounds of, in urine, 517 



Phloridzin, temporary diabetes produced 

 by, 576 



Phonation, nervous mechanism of, 1083; 

 centre for, 1085 



Phosphates in muscle ash, 93; in nerve 

 ash, 106 ; in urine, 518 



Phosphenes, 884 ' 



Phosphorus, a constituent of nuclein, 38, 

 630; of serum, 47; of lecithin, 105; of 

 nerve tissue, 106 ; of milk, 613 



, its importance in organisms, 630 



Photochemistry of the retina, 922 



Physiology, divisions of, 3 ; problems of, 9 



Physiological unit defined, 6 



Physostigmin, its effect on pupil contrac- 

 tion, 866 ; its effect on accommodation, 

 868 



Pigment, yellow, of si-rum. 47 



epithelium of retina, 926 



Pigments, their possible formation from 

 haemoglobin, 36; of bile, 356; of urine, 

 519 



Pilocarpin, its action on the sweat glands, 

 557 



Pitch of sounds, discrimination of, 1001 



Pituitary body, the, structure of, 601 



Placenta, the, glycogen present in, 574; 

 formation of, from the decidua sero- 

 tina, 1120; vascular events of the, 

 1121 ; shedding of the, 1121 ; expulsion 

 of, after parturition, 1139 



Plasmatic layer in capillary contents, 290 



Plasmine, properties of, 23 



Plateau, systolic, 197 



Platelets, blood, 44, 292 



