520 



INDEX TO VOLUME II. 



Sugar, use of, iu muscular work, 74 

 Summation of contractions in muscle, 121 



of stimuli in nerve-cells, 190 

 in reflex action, 211 

 Superior laryngeal nerve, 428 



oblique muscle, 299 



rectos muscle, 299 

 Supernumerary digits, 494 

 Sustentacula! cells of the crista acostica, 374 

 Suture "f skull-bones, 414 

 Swallowing, action of the epiglottis in, 422 

 Sylvian heat-centre, 271 



Sympathetic ganglia, action of nicotiu on, 219 

 of st rychnin on, 219 



nerves to the iris, 324 



pains, 400 



system, connection of, with the cerebro-spinal, 

 2 I B 

 post-ganglion ie fibres of, 219 

 pre-ganglionic fibres of, 218 



vibration, 385 

 Symphysis, 414 

 Syndesmosis, 414 

 Syuovial fluid, 415 

 Syphilis, hereditary transmission of, 498 



Tactile areas of the skin, 395 



corpuscle, 390, 392 

 Taste, nerves of, 410 



organs of, 410 

 Taste-buds, 410 



Taste-nerves, nuclei of origin of, 236 

 Taste-perceptions, conditions affecting. 411 

 Taste-sensat ions, conditions which influence, 411 



primary, 412 

 distribution of, 413 

 Taurin in muscles, 167 

 Tea, stimulating action of, 7."> 

 Tectorial membrane, 379 

 Tegmen of the tympanum, 364 

 Temperature, effect of. on muscular contraction, 

 136 



influence of, on conductivity. 92 

 on irritability. 56 

 on rigor mortis, 161 



limits ill' muscular contraction, 136 



nerves, 397 



of the blood from the brain, 288 



rise of, from lesions of corpora striata. 271 



sense, 397 



spots of tin- skin. 39S 

 Tendon rethxes after cerebellar injury, 272 



sensory nerve-endings in, 402 

 Tension, effect of, on contraction curve, 109 

 on irritability of nerves and muscles, 56 

 on latent period. Ill) 

 Tensor fcympani muscle, 369 

 Tentacles of Actinia-, contractility of, 20 

 Terminal arborizations, definition of, 174 

 Tertiary positions of the eve, 299 

 Testis, 443 



ducts of, 1 17 



histology of, 1 16 

 Tetanic contractions, height of, 120 



relative intensity of, 126 

 Tetanomotor, 56 



Tetanus. 66 



anal} sis of, 123 



complete, 120 



curves, introductory peaks of. 124 



explanation of, 121 



from strychnin poisoning, '.'17 



iiii iplete, 1 17 



normal physiological, L32 



of the muscles, 127 



rati- of stimulation required for. 125 



Bitter's, 37, 61. 131 



Tetanus, secondary, 150 



voluntary, 133 



W'undt's' :;7 

 closing, 61 

 Thalamus, cortical connections of, 271 



heat -cell tie of. 271 

 Thermal energy liberated in muscle. 141 



stiiuulat ion of nerve, 25 

 Thermopile, 142 



Thermotaxis, relation of cerebrum to, 270 

 Thirst. 10 1 



Thyro-arytenoid muscles, 424, 426 

 Thyro-hyoid muscle, 425 

 Thyroid cartilage, 425 



gland, relation of, to growth of the central 

 nervous system, 289 

 Tigroid of nerve-cells, 179 

 Timbre of musical tones. 383, 387 

 Time intervals, perception of, by the ear, 388 

 Tissue death, 492 

 Tissues, growth of, 486 

 Tobacco smoke, action of, on nerves, 60 

 Tones, combinational. 387 



differential, 387 



fundamental, 383 



loudness of, 381 



pitch of, 381 



simple. :\-\ 

 Tongue, distribution of taste-sensations on, 413 

 Tonus, muscular, in the insane, 220 

 reflex origin of. 220 



of muscles, 143 

 Touch illusions, 396 



sensations, 392 



localization of, 394 

 Tractus solitarius, 236 

 Tremors, 132 



Trigeminal nerves, central paths of, 238 

 Triplets, 1-:; 

 Trophic impulses to muscles, 70 



influence of neurones on one another, 197 



nerves of the muscles. 70 

 Tubuli recti of the testis. 1 17 

 Turtle's striped muscle, time of conti'action in, 



108 

 Twins, 482 

 Tympanic membrane. 364 



effect of destruction of, 370 

 pressure-sensations of, 382 

 vibrations of, 370 

 Tympanum, 363 



mechanics of, 368 



Ultimum moriens, 492 



Umbilical arteries, 174 



vein. 17 1 

 Umbo of the tympanic membrane, 365 

 Unconsciousness, 293 

 Unipolar excitation for localized excitation, 45 



nerve-cells, development of, 178 



stimulation, •';" 

 principles of, 43 

 Urea in muscles, 167 

 Urethra, 143 



structure of, 1 18 

 Uric acid iii muscles, 167 

 Uterus, 1 13, 156 

 Utriculus of the internal ear. 373 



Vagina, 143, 162 



Vagus, central path of the afferent fibres in, 

 236 

 nerve, fatigue of, 96 



rate of conduction in. 90 

 Variation of the offspring in reproduction, 500 

 Variations, somatic, classification of, 497 

 Yas deferens. 1 17 



