INDEX 



545 



Neuraxis, 56 



Neuraxones conduct in both directions, 

 510 



practically unfatiguable, 514 

 Neurilemma, 57 

 Neurogenic theory, 293 

 Neuro-muscular mechanism, 334, 387 



spindles, 332 

 Neurone, 55, 60 



theory, 60 



Neurotendinous end-organ, 332 

 Neutrophiles, 267 

 New voluntary movements, 411 

 Nicotin, 168, 507 

 Ninth nerve, 88, 180 

 Nissl-bodies or -granules, 58 

 Nitrogen, 19 



determination of, 242 



elimination of, 240 



excretion of, 240 



food-cycle, 134 



in protoplasm, 19, 26 

 Nodes, lymph, 267, 303 



of Ranvier, 57 



Noise, perception of, 346, 350 

 Non-polarizable electrodes, 471 

 No n- vegetative reflexes, 84 

 Nose, 103 



Nuclear spindle, 46 

 Nucleic acid, importance of, 27 

 Nuclein, 30 

 Nucleoplasm, 21, 30 

 Nucleoproteid, 30 

 Nucleus, 21, 22, 30 

 Nursing, frequency of, 448 

 Nutrition, 35, 214 



external, 215 



in childhood, 450 



in Daphnia, 467 



in old age, 454 



internal (metabolism), 218 

 triangle, 35 



OBJECTIVE experience, 415 

 Obstructions, perception of, 351 

 Odoriferous particles, 363 

 Odors, 363 

 Old-age, 454 

 Olein, 31 

 Olfaction, 361 

 Olfactory cells, 361 



center, 73, 363 



lobes, 73 



nerve, 88, 362, 363 

 Olivary body, 76 

 Open windows, school-room .ventilation 



by, 132 



Optic nerve, fibers in, 339 

 tracts, 72, 88 



thalami, 74 

 Optics, 520 

 Organ of Corti, 348 

 35 



Origin of life, 18, 19 

 Ornamentation, 325 

 Osmosis, 118, 221, 273, 529 

 Osmotic pressure, 223 

 Ossicles of the ear, 347 

 Ovaries, 434 



internal secretion of, 228, 437 

 Oviposition, 441 

 Ovulation, 432 



and menstruation, relation of, 437 

 Ovum, 432 



discharge of, 432 



fertilization of, 439 



maturation of, 433 



rate of movement of, 432 

 Oxidation in the body, 101, 251 

 Oxygen in protoplasm, 34 



in respiration, 103 



PACINI, corpuscles of, 330, 353 

 Pain, 366 



apparatus, 367 



distribution of, 368 



lowers blood-pressure, 286 



vs. unpleasantness, 366, 409 

 Pains of labor, 446 

 Palmitin, 31 

 Pancreas, 205 



enzymes of, 204 

 Pancreatic juice, 204 

 Paramecium, 38, 461 

 Parasites kept out by skin, 315 

 Parathyroids, 227 

 Parotid gland, 172 

 Particle of protoplasm, 27 

 Parturition, 446 



nerves of, 447 



neuromuscular apparatus of, 447 

 Patheticus, 88 

 Pepsin, 191 

 Peptones, 192 

 Perception, 415 



of light, 344 



of space, 345 



Perfusion of heart with salines, 503 

 Perimeter-chart, 338 

 Peripheral plexuses, 93 

 Peristalsis, 199 

 Peritoneum, 275 

 Peri vascular plexus, 61 

 Permeability of capillaries, 272 

 Personality of consciousness, 402 

 Perspiration, 252, 317 

 Peyer's patches, 198 

 Pfluger, 19 

 Phagocytes, 268 

 Pharynx, 179 

 Philodina, 463 



Phosphorus, importance of, 27 

 Phrenics, 112 

 Phrenology, 69 

 Physical exercise, 274 



