1036 



INDEX. 



Nitrogen, determination of, 892 



equilibrium, 891 



effect of non-protein food on, 894 



excretion in urine, 845 

 Nitrogenous extractives of muscle, 65 

 Nodal point of eye, 312 

 Non-polarizable electrodes, 100 

 Norleucin, 794 

 Normoblasts, 439 

 Nuclease, 750 



Nucleo-albumin in bile, 818 

 Nucleoproteins, 1015 



in blood, 452 



intermediary metabolism of, 851 



OBESITY, physiological cause of, 919 

 Ohm's law of composition of sound 



waves, 397 

 Olfaction, end-organ for, 299 



mechanism of, 300 

 Olfactometer, 304 

 Olfactory associations, 305 



bulb, histological structure of, 217 



center in cortex, 216 



nerve, course of fibers of, in brain, 

 218 



organs, fatigue of, 303 



sensations, classification of, 301 

 conflict of, 305 

 qualities of, 301 

 threshold stimulus, 303 



sense cells, 300 



stimuli, nature of, 301 

 Oncometer, 841 

 Oocytin, 978 

 Oogonia, 975 

 Ophthalmometer, 334 

 Ophthalmoscope, 331 

 Opotherapy, 866 

 Opspnins, 444 

 Optic chiasma, decussation in, 209 



nerve, course of fibers of, in brain, 

 208 



radiation, 209 



thalamus, functions of, in vision, 

 212 



tracts, structure of, 209 

 Optical deceptions, 382 

 Optograms on retina, 339 

 Orthodiagram, 545 

 Orthodiagraph, 545 

 Osmosis, definition of, 1016 

 Osmotic pressure, definition of, 1017 

 determination of, 1019 

 of blood, 422 



Oval field of Flechsig, 180 

 Ovaries, internal secretion of, 886 



relation of, to menstruation, 970 

 Overtones, production of, 397 

 Ovulation, 966 

 Ovum, fertilization of, 976 



Ovum, implantation of, in uterus, 978 

 maturation of, 974 

 passage of, into uterus, 973 

 Oxalate solutions, effect of, on coagu- 

 lation, 467 

 Oxidases, 748, 959 

 Oxidations, theories of, 959 

 Oxygen, action of, on respiratory 



center, 696, 705 



compound of, with hemoglobin, 428 

 condition of, in blood, 676 

 effects of varying pressures of, on 



respiration, 705 

 potassium ferricyanide method of 



determining, 671 

 tension of, in alveolar air, 681 

 in tissues, 683 

 in venous blood, 681 

 Oxygenase, 962 

 Oxyhemoglobin, 428 

 Oxyprolin, 795, 1009 

 Oxyproteic acid, 846 

 Oxypurins, 850 



PACCHIONIAN bodies of brain, 627 

 Pain sense, distribution and charac- 

 teristics of, 286 

 localization of, 286 

 path for, in cord, 174 

 Pains, hunger-, 725 

 Pale fibers of muscle, 19, 26 

 Pancreas, action of lipase in, 797 



anatomy of, 787 



curve of secretion of, 789 



digestive action of secretion, 792 

 on carbohydrates, 797 



internal secretion of, 887 



normal mechanism of secretion, 790 



secretory nerves of, 788- 

 Pancreatic secretion, chemical, 791 



nervous, 791 

 Paraglobulin, 450 

 Paralysis (motor), 198 

 Paralytic secretion (saliva), 763 

 Parapeptone, 780 

 Paraphasia, 220 

 Parathyroid, structure and function 



of, 868, 869 

 Parthenogenesis, 978 

 Parturition, physiology of, 982 

 Pendular movements (intestine), 725 



sound waves, 395 

 Pepsin, 778 



discovery of, 742 



properties of, 778 

 Pepsin-hydrochloric acid digestion, 



780 



Peptids, 796, 1010 

 Peptone, 780 



absorption of, in stomach, 786 



effect on clotting of blood, 468 



