IXDEX TO VOLUME II. 



517 



Pacinian body, 391 

 of the penis, 449 

 Pain nerves, evidence for the existence of, 232 



points of the skin, 400 



sensations of, 399 



transferred or sympathetic, 400 

 Pale striped muscle, phvsiological peculiarities 



of, 109 

 Pangenesis, Darwin's theory of, 501 

 Papilla foliata of rabbits, 410 

 Paradoxical contraction. 157 

 Parallax, use of, in estimation of distance, 356 

 Paralysis after removal of motor areas, 269 



agitans, 296 



Brown-Sequard's, 233 



homolateral, after hemisection of the cord, 

 233 

 Paramcecium, reproduction in, 440 

 Paramyosinogen, 163 



temperature of heat coagulation of, 165 

 Paresis following removal of the cerebellum, 272 



from injury to motor areas, 269 

 Partial tones, definition of, 383 

 Parturition, 479 



spinal centre of, 481 

 Paths of conduction in the cord, clinical evi- 

 dence on, 234 

 Pendular vibrations, 381 

 Penis, 443 



structure of, 448 

 Perilymph, 372 

 Periodic reflexes, 216 

 Peripheral nerves, medullation of, 180 



reference of special sensations, 400 

 Pfliiger's law of contraction, 50 

 Phakoscope, 308 



Phalangar process of the rods of Corti, 378 

 Phosphenes, pressure, 305, 331 

 Photometry, 345 



Phrenic nerve, currents of action in, 154 

 Phylogenetic development of nerve-cells, 177 

 Physiological anode, definition of, 52 



kathode, definition of, 52 



observations on afferent paths in the cord, 229 



rheoscope, 148, 151 



salt solution, 59 

 Physostigmin, action of, on accommodation, 

 311 

 on the eye, 325 

 Pia mater, weight of, 274 

 Pigment epithelium, retinal, movements of, 330 



retinal, relation of, to adaptation of the eye, 

 326 

 Pince myographique, 87 

 Pineal gland, calcification of, in old age, 491 

 Pinna of the ear, 362 

 Pitch, limits of perception of, 382 



of musical tours, 381 



of the voice, 130, 432 

 Pituitary membrane, 408 

 Pivot-joint, 417 

 Placenta, IT I 



Placental transmission of infectious diseases, 

 498 



villi, 17 1 

 Plants, regeneration of lost parts in. !!><; 

 Pohl'a mercury commutator, '■>*> 

 Polar amphiaster of the ripening egg, 153 



bodies, 151 



of the ovum, 453 

 Polarity of neurones, 184 

 Polarization, after-effects of, (;."> 



physiological, of neuroblasts, 1 T« ; 

 Polarizing current, effect of. on conductivity, 50 

 on muscles, o'! 

 on nerves. 62 

 Pole-changers, ::<i 



Polyspermy, 471 

 Poinum Adami, 42~> 

 Positive after-images, 346 

 Posterior association-centre, 257 

 Post-ganglionic fibres of the sympathetic sys- 



tem, 219 

 Posture sense, 399 

 Potassium salts, action of, on muscles, 138 



relation of, to irritability, 59 

 Preformation theory of heredity, 500 

 Pre-ganglionic fibres of the sympathetic system, 



•_'l!l 

 Pregnancy, effects of, on the mother, 17? 

 Presbyopia, 314 

 Pressure, effect of, on irritability of nerves, 56 



infiuence of, on conductivity, 92 

 Pressure-points of the skin. '■'>'.)<> 

 Pressure-sensations, fusion of, 394 

 Pressure-sense, delicacy of, 392 



of the tympanic membrane, 382 

 Primary position of the eye, 299 



taste-sensations, 412 

 Principal foci in a dioptric system, 302 



point of the simplest dioptric system, 301 



ray in the simplest dioptric -ysteru, 301 

 Processus brevis of the malleus, 365 



gracilis sive folianus of the malleus, 365 

 Projection system of fibres, origin of, from cen- 

 tral' cells, 205 

 Pronucleus, female, 453 



male, 166 

 Proptosis after cerebellar injury. 272 

 Prostate glands, 1 13 

 histology of, 4 18 

 secret ion of. 1 Hi 

 Prostatic lluid. 14(5. IIS 

 Protagon of medullary substance. l?(i 

 Proteids of muscle, precipitation temperature 

 of, 166 



of muscle-serum, 166 



relation of, to muscular work, 74 

 Pseudoscopic vision, 318, 357 

 Psychical powers of the spinal cord, 215 

 Psycho-physic law, 340 



of Fechner, 393 

 Puberty, 489 



Pupil, changes during accommodation in. 311 

 in size of, 323 



condition of, in sleep. 325 



dilator nerves, 324 



size of, in old age, 314 

 Pupillary reflex to light. 323 

 Purkinje-Sanson's images, 307 



l'urkinje's figure, 321 

 phenomenon, .".In 

 explanation of. :: 12 

 Purposeful reflexes, 215 

 Pyramidal fibres. Dumber of, 246 

 t racts in t lie cord, 2 15 

 geminal fibres of, 215 

 si/.e of. 252 

 nerve-cells, development of. it-' 



< V M M)i;[ P] BT8, I-:'. 



Quality of musical tones. 383 



of t he voice. 130 



Quinine, action of. on coagulation of muscle- 

 plasma, I'ii 

 Quintuplets, !-•'• 



Race, relation of brain-weight to. 278 

 Range of accommodation, normal, 312 

 Kate of conduction in muscles, -T 



in nerves, 89 

 of excitation, effect of. on the contraction 

 curve. 1 1 1 



of stimulation in voluntary contractions, 133 



