518 



INDEX TO VOLUME II. 



Bate of stimulation, limitations of, for muscle, 

 L26 

 required to tetanize, L25 



lii'Mi'timi ot' degeneration, 48, 54, 70 

 of muscles, L59 



of nerve-cells, 191 



of nerve-fibres, lTn 



time, 291 

 in old age, 491 

 Recurrent laryngeal nerves, 428 



sensibility of the anterior roots, 204 

 Bed striped muscles, physiological properties of, 



109 

 Beduced eye, 304 

 k( !l< \ actions, simple, 208 



air, -.'(in 



frog, 209 



segmental reaction, 210 



stimulation of the nervous system, 208 



tonus of muscular tissues, 220 

 Reflexes, co-ordinated, 211 



en ordination of the efferent impulses in, 214 



effect of location of stimulus on, 209 

 of strength of stimulus on, 210 



from the isolated cord in man, 213 

 lumbar cord, 213 



in different vertebrates, 212 



in man. 216 



latent period of, 211 



of a purposeful character, 215 



periodic, 216 



simple, 208 



spinal, 212 



reinforcement of, 222 



summation of stimuli in, 211 



voluntary control of, 214 

 Refractive index of the aqueous humor, 303 

 of the lens, 303 

 of the vitreous humor, 303 



media of the eye. .'!()•.' 



surfaces of the eye. 303 

 " Refractory period " of nerves, 57, 66 

 Regeneration of lost parts, 496 



of nerves, 7-. 199 

 Registers of the voice, 132 

 Begular astigmatism, :il7 

 Reinforcement of reflexes, 222 



of the knee-kick, 222 

 Reissner, membrane of, 371 

 Rejuvenescence by sexual reproduction, 442 

 Relaxation of muscle, nature of, 99 

 Beproduction, asexual. 439 



of Leucophrys patula, 442 



of onychodromus, l 12 



of stj lonychia, 1 12 



sexual, 140 



element-- of, 440 



theory of, 1 II 

 Reproductive organs, female, 449 

 internal secretions of, 162 

 male, 443 



process, 463 

 l;> 3onance of the ear, 388 

 Resonants, 136 



Resonators, analysis of sounds by, 385 

 Bete vasculosum of the testis, l'7 

 Betina, changes produced by light in, 330 



circulation in. 322 

 histology of, 329 

 oscillatory activity of, '■'■ 1 1 



Space percept ions by, 3 18 



structure of, 327 



Ret inal currents, 331 

 images, inversion of, 305 

 size of, 305 



stimulation, after-effect of, 345 

 fatigue in. 34 l 



Ret inal stimulation, latent period of, 343 

 laws of, 343 



rise to maximum for different colors, 343 

 vessels, demonstration of, 321 

 Ri version to ancestral characters, 495 

 Bheocord, 11 

 Bheonome, .'il 



Rheoscope, physiological, 148 

 Rbeoscopic frog, 1 18 

 Rheostat, 40 

 Bhinencephalon, 241 

 Rigor caloris, 57, 164 

 contracture in, 128 

 effect of fatigue ou, 165 

 mortis, 159 



chemical changes accompanying, 162 

 contracture of, 128 

 disappearance of, 162 

 influence of the nervous system on, 220 

 nature of changes in, 161 

 Rima glottidis, 423 

 respiratoria, 423 

 vocalis, 423 

 Ritter's opening tetanus, 37, 61 



tetanus, 131 

 Rod-and-cone layer, function of, 327 

 Rod-pigment, 339. See also Visual purple. 

 Rods and cones, function of, 341 

 number of, 330 

 of Corti, 377 

 retinal, function of, 341 

 Rota i ion, movements of, 416 

 Running, 421 

 Rut of animals, 460 



Sacculus of the internal ear, 373 

 Saccus endolymphaticus, 373 

 Saddle-joint, 41(i 



Salivary secretion, cerebral control of. 270 

 Salts, inorganic, relation of, to irritability, 58 

 of muscle, 168 

 of heavy metals, action of, on nerve and 

 muscle, (ill 

 Santorini, cartilage of, 122, 425 

 Sarcode of sponges, contractility of, 20 

 Sarcolactic acid, formation of, in rigor mortis, 

 161, 162 

 in clotting of muscle-plasma, 164 

 relation of, to fatigue contracture, 131 

 Sarcoplasm, 104 

 Saturation of colors, 342 

 Scala media, 375 

 tympani, 372, 37."> 

 vest ibuli, 372, 375 

 Schneiderian membrane, 408 

 Scrotum, 443 



Secondary degeneration of nerves, 197 

 position of the eye, 299 

 tetanus, 150 

 Secretion, salivary, cerebral control of, 270 

 Secretory nerves, fatigue of, 96 

 Segmental arrangement of nerve-elements. 206 



react ions, reflex, 210 

 Segmental ion, h ; 7 

 Segmentation-centrosomes, 469 

 Segmentation-nucleus. 466 

 Semen, composition of, 445 

 Semicircular canals, membranous, 373 

 of the bony labyrinth, :'.?1 

 relation of, to equilibrium, 405 

 sect ion of, 105 

 Seminal vesicles. 1 13 

 function of, I 18 

 secretion of, I l'> 

 Semivowels, 436 

 Senescence of nerve-cells, 182 



of the central nervous system, 295 



