1U48 



Propeptone, 776 

 Prostate gland, 998, 1001, 1002 

 Protalbumoses, 776 

 Protamins, 999, 1024 

 Protanopia, 352 

 Proteases, 742 

 Protective enzymes, 743 

 Proteins, absorption of, in intestine, 

 801 



adequate, 900 



as glycogen formers, 821 



biologic value of, 894 



circulating, 895 



classification of, 1023 



definition and structure of, 1019 



diffusion of, 1031 



excretion of nitrogen of, 841, 842, 

 843 



general reactions of, 1021 



in blood-plasma, 446 



inadequate, 900 



necessary amount of, in diet, 896, 

 941, 942, 943 



normal metabolism in body, 893 



nutritive value of, 899 



of muscle, 60 



osmotic pressure of, 1030 



putrefaction of, in large intestine, 

 804 



specific djTiamic action of, 906 



storage, 895 



synthesis of, in body, 801 

 Proteolytic enzymes, 742 

 Proteoses, 1026 



general properties of, 776 

 Protopathic sensations, 275 



sensibility, 274 

 Proximate principles of food, 733 

 Psychophysical law, 271 

 Ptomaines, 805 

 Ptyalin, 750 



action of, in stomach, 762 



digestive action of, 760 



effect of various conditions upon, 

 762 

 Pubertal gland, 883, 996 

 Puberty, 976, 996 



Pulmonary arteries, vasomotors of, 

 615 



circulation, peculiarities of, 515 

 variations of, pressure in, 516 

 Pulse, anacrotic waves of, 523 



catacrotic waves of, 521, 522 



central, 523 



form of wave, 520, 521 



general statement, 517 



peripheral, 523 



varieties of, in health and disease, 

 524 



velocity ot propagation of, 518 



venous, 525 

 Pulse-pressure, 490 



Pulsus irregularis perpetuus, 560 



Purin bases, 63, 846 



Purkinje fibers, 538 

 images of, 309 

 phenomenon, 344 



Putrefaction in intestines, 804 



Pyloric cap, 716 



glands of stomach, 763 

 secretion of, 775 



Pyramidal tract in brain, 796 

 in spinal cord, 177 



Pyrrol compounds in protein mole- 

 cule, 791 



PyiTohdin-carboxylic acid, 791, 1019 



Quotient, respiratory, 705 



Reaction of degeneration, 95 



time, 112 

 Reactions, biological, 423 

 for proteins, 1021 

 Gmelin's, 810 

 of blood, 414 



of contents of small intestine, 803 

 of urine, 839 

 Pettenkofer's, 812 

 Recessive characteristics in inherit- 

 ance, 1006 

 Reciprocal innervation, 147 

 Recurrent sensibility of anterior roots, 



84 

 Red blood-corpuscles, chemical com- 

 position of, 445 

 condition of hemoglobin in, 418 

 effect of hemorrhage upon, 436 

 hemolysis of, 420 

 number and size of, 418 

 origin and fate of, 435 

 variations in number of, 437 

 fibers in muscles, 19, 20, 26 

 Reduced hemoglobin, 426 



schematic eye, 306 

 Reflex actions, axon reflexes, 149 

 classification of, 141 

 conditioned, 188 

 definition and historical, 141 

 deep, 158 



unconditioned, 188 

 extensor thrust, 156 



from parts of brain, 148 

 influence of condition of cord on, 

 148 

 of sensory endings upon, 144 

 inhibition of, 146 



of heart, 577 

 knee-jerk, 153, 154 

 myenteric, 723 



of erection and ejaculation, 1001 

 of respiratory center, 684, 689 

 of vasomotor nerves, 602 



