900 



INDEX. 



sure sense, distribution of, 256 

 localizing power, etc., 260 

 Primary proteoses, 693 

 Principal axis of lens, 284 



focal distance, 283, 286 

 Projection system of fibers (brain), 



173 

 Propeptone, 693 

 Prostate gland, 861 

 Protalbumoses, 693 

 Protamins, 862, 879 

 Proteids, absorption of, in intestine, 

 716 



as glycogen-formers, 733 



classification of, 877 



definition and structure of, 874 



diffusion of, 886 



excretion of nitrogen of, 752 



general reactions of, 875 



in blood-plasma, 410, 413 



necessary amount of, in diet, 788 



normal metabolism in body, 790 



nutritive history of, 787 



of muscle, 57 



osmotic pressure of, 885 



putrefaction of, in large intestine, 

 719 

 Proteolytic enzymes, 662 

 Proteoses, general properties of, 879 

 Prothrombin, 418 

 Proximate principles of food, 654 

 Psychophysical law, 253 

 Ptyalin, 669 



action of, in stomach, 697 



digestive action of, 679 



effect of various conditions upon, 

 681 

 Puberty, 841, 860 



Pulmonary arteries, vasomotors of, 

 551 " 



circulation, peculiarities of, 467 

 variations of pressure in, 468 

 Pulse, anacrotic waves of, 475 



catacrotic waves of, 474 



form of wave, 472 



general statement, 469 



varieties of, in health and disease, 

 475 



velocity of, propagation of, 470 



venous, 475 

 Pulse-pressure, 446 

 Purin bases, 61, 739, 756, 863 

 Purkinje, images of, 290 



phenomenon, 319 

 Putrefaction in intestines, 719 

 Pyloric glands of stomach, 683 



secretion of, 692 

 Pyramidal tract in brain, 184 



in spinal cord, 167 

 Pyrrol compounds in proteid mole- 

 cule, 706 

 Pyrrolidin-carbonic acid, 706, 874 



Reactions for proteids, 875 

 Gmelin's, 724 

 of blood, 382 



of contents of small intestine, 718 

 of urine, 751 

 Pettenkofer's, 725 

 Recurrent sensibility of anterior roots. 



77 

 Red blood-corpuscles, chemical com- 

 position of, 409 

 condition of hemoglobin in, 385 

 effect of hemorrhage upon, 425 

 hemolysis of, 385 

 influence of spleen upon, 738 

 number and size of, 384 

 origin and fate of, 401 

 variations in number of, 402 

 Reduced hemoglobin, 391 



schematic eye, 286 

 Reflex actions, axon reflexes, 142 

 classification of, 136 

 definition and historical, 133 

 from parts of brain, 142 

 influence of condition of cord on, 

 141 

 of sensory endings upon, 138 

 inhibition of, 139 



of heart through, 517 

 knee-jerk, 146 



of erection and ejaculation, 864 

 of respiratory center, 612 

 of vasomotor nerves, 540 

 preparation of reflex frog, 135 

 reflex arc, 133 

 respiratory, from nose, larynx, 



and pharynx, 617 

 special and deep reflexes of cord, 



151 

 spinal reflexes, 135, 138 

 theory of, 137 



through peripheral ganglia, 142 

 through vasodilator nerves, 546 

 time of, 139 



Tiirck's method of studying, 

 141 

 Refractive power of eye, 293 

 Refractory period of heart beat, 504 



of nerve cell, 132 

 Regeneration in nerve fibers, 118 



of parts of body, 868 

 Reinforcement of knee-kick, 146 

 Rennin, 695 



of kidney, 782 

 Reproduction, changes during preg- 

 nancy, 854 

 in uterus in menstruation, 842 

 chemistry of spermatozoa, 862 

 determination of sex, 868 

 erection, 863 



fertilization of ovum, 850 

 functions of placenta, 852 

 general statements, 838 





