516 



INDEX TO VOLUME II. 



Nerve-cells, summation of stimuli in, 190 



volume relations of. 175 

 Nerve-elements, primitive segmental arrange- 

 ment of, 205 

 Nerve-endings in tin- skin, 392 

 Nerve-fibres, classification of, '-'l 



cortical, increase in the aumber of, during 

 -i-owili. 282 



fat igue in, L95 



functions of, 21 



reaction of, 170 

 Nerve-impulse, definition of, 25 



direction of tin- passage of. 1-1 



electrical variation accompanying, 1-:; 



generation of, 1-7 



in peripheral nerves. i-:; 



peripheral diffusion of. 218 



reversed, in spinal ganglion-cells, L85 



theories of, !'? 



transmission of, from neurone to neurone, 207 

 Nerve-muscle preparation, :;i 

 Nerve-trunks, isolated conduction in, 7!) 

 Nerves, action currents in, 153 



auditory, central path of, 237 



chemistry of, 169 

 cross-suturing of, 200 



current of rest in, 1 1!' 



degeneration id', after section, til', 78 



fatigue of, 75 



glossopharyngeal, central conduction paths 



for, 236 

 in man, stimulation of, "1 

 law of stimulation of. with galvanic currenl . 50 

 limitation of the rate id' stimulation in, 126 

 lingual, gustatory function of, 410 



medulla! ion of, 180 



non-medullated, rate of conduction in, 90 

 of common sensation, central conduction paths 



of. 230 

 of cutaneous sensation, central conduction 



paths of, 233 

 of dermal sensation, area of distribution of, 



231 

 of invertebrates, rate of conduction in, 91 

 of taste, nuclei of origin of, 236 

 of temperature, 397 

 of Wrisberg intermedins), central path of, 



236 



olfactory, central paths of, 241 

 optic, central paths of. 238 

 rate of conduction in, 89 

 secondary degeneration of, 197 

 specific energy of, 232 

 trigeminal, central paths of, 238 

 vagus, course of the afferent Mores in, 236 

 Nervi erigentes, 164 



Neuroblast, development of. IT*; 



Neuro-kerat in of nerves, 169 

 Neuromuscular spindle. 390 

 Neurone, definition of, 173 

 Neurones, 21 



afferent, to the spinal cord, 203 



changes in number and size of, 280 



conduction in. !'7 



connection between, 206 



double conduction in. 185 



increase in number of, during growth, 282 



internal structure of. 179 



polarity of. 1-1 



total number of. 283 

 Nicotin, action of, on end-plates, 27 



on sympathetic ganglia, 219 

 Nissl method for study id' nerve-cells, 195 



substance, iron in. 191 

 of nerve-cell-, 170 

 Nitrogen, free, of muscles, 168 

 Nitrogenous extractives of muscle, 166 



Nodal point in the simplest dioptric system, 301 



Nceud vital. 236 



Noises, definition of, 388 



Non-medullated nerves, rate of conduction in, 90 



stimulation fatigue of, L80 

 Non-polarizable electrodes, 29 

 Nose, anatomy of. 108 



respiratory t ract of, 408 

 Nutrition of nerve-cell.-. L90 



of the embryo, 475 

 Nutritive control of mrve-cell bodies over 



nerve-fibres, 198 

 Nymphse, 462 

 Nystagmus after cerebellar injury, 27'.' 



< it l LOMOTOB nerve, ciliary fibres of, 311 



relation of, to the iris, 323 

 Odors. 110 

 (Edema of the .-lot t is. 422 



< ild age of the central nervous system, 295 



Olfactory area id' the cortex, 253 



cells, 108 



epithelium. 10- 



nerves, central paths of, 241 



paths to the brain, 409 



stimuli, conditions affecting, 109 



tracts, section id', in sharks, 264 

 ( hno-hyoid muscle. 425 



Ontogenetic development of nerve-cells, 177 

 Onychodromus, reproduction of, 442 

 Oocyte, 4r.l 



< Ophthalmometer, 304 

 Ophthalmoscope, 326 



Optic commissure, decussation of optic fibres in, 

 238 

 nerve, currents of action in, 154 

 nerve-fibres, number of, 330 

 nerves, central paths of, 238 

 cortical centres of, 240 

 efferent fibres of, 240 

 thalami, functions of, 271 

 Optical constants of the eye, 303 

 illusions in binocular vision. 359 



of space, perceptions, : J >51 

 properties of striated muscle, 103 



< Optograms, 330 



Organ of Corti, structure of, :;77 



of Golgi in tendons, 402 

 I Organization in the central nervous system, 285 



relation of educahilitv to the establishment 

 of, 286 

 Organs, growth of, 486 

 Oscillatory activity of the retina, 344 

 ( Os orbiculare of the incus, 366 

 I Ossicles, auditory, 365 



of the ear. movements of, 367 

 Otitis media. 364 

 ( Otoconia, 37 l 

 otolith-. :;7l 

 Ova, 140 



number of. in human ovary, 451 

 ( Ovaries, 1 13 



effect of removal of. on menstruation, 459 



st rucl me id'. 154 



Overtone-, definit ion of. :!-:: 



inharmonic, 386 

 Oviduct-. 1 13, 150 

 Ovulation, 155 

 ( Ovum, chemist ry of, 450 



fertilization of. 166 



human, structure of. 1 I'' 



maturation of, 151 



physiological properties of. 22 



segmental ion of, 167 



Stages in t he maturation of. 152 

 Oxygen, storage of, in muscle, L69 

 Supply, relation of, to irritability, lis 



