GENERAL INDEX. 



549 



Special respiratory movements, i. 453 

 Specialization of functions, i. 21 

 Specific energies of nerves, doctrine of, ii. 232 

 energy of the optic nerve, ii. 331 

 gravity of blood, i. 34 



of blood-corpuscles, i. 34, 35 



of muscle, ii. 159 



of the encephalon, ii. 275 



of the nervous system at different ages, ii. 



284 

 of urine, i. 251 

 heat, definition of, i. 47? 



of the human body, i. 504 

 nerve-energy, doctrine of, ii. 399 

 Spectral colors, incomplete saturation of, ii. 



342 

 Spectroscope, i. 40 

 Spectrum, ii. 332 

 definition of, i. 40 



luminous intensity of the colors of, ii. 340 

 of CO-hremoglobin, i. 44 

 of haemoglobin, i. 42 

 of oxyhemoglobin, i. 41 

 solar, i. 41 



top, Benham's, ii. 344 

 Speech, dependence of, on hearing, ii. 431 



elements of, ii. 433 

 Speech-centre, ii. 257 

 Spermaceti, i. 540 

 Sperm-aster, ii. 467 

 Spermatids, ii. 445 

 Spermatocytes, ii. 445 

 Spermatozoa, ii. 440 

 contractility of, ii. 20 

 discovery of, ii. 443 

 entrance of, into the uterus, ii. 465 

 locomotion of, ii. 465 

 maturation of, ii. 445 

 movements of, ii. 444 

 structure of, ii. 443 

 Spermiu, ii. 445 



physiological action of, i. 273 

 Sperm-nucleus, ii. 466 

 Spherical aberration, ii. 315 

 Sphincter ani, cerebral control of, ii. 270 

 antri pylorici, i. 377 

 iridis, ii. 325 

 pylori, i. 377, 381 

 urethrse, i. 390 



contraction of, in erection, ii. Hit 

 vesica? interims, i. 390 

 Sphincters ani, i. 3*6 

 Sphygmogram, i. 143 

 Sphygmograph, i. 1 12 

 Sphygmomanometer, i. 141 

 Sphygmometer, i. 141 



.Spinal (('ntrcs for vaso-inotor nerves, i. 199 

 cord, afferent paths of, ii. 229 

 central neurones of, ii. 203 

 degeneration of, from heinisect ion, ii. 228 

 efferent neurones of, ii. 203 

 motor tracts of, ii. 245 

 reflexes in man after section of, ii. 213 

 schematic cross-section of, ii. 202 

 weight of, ii. 274 

 ganglion-cells, development of, ii. 178 

 nerve-roots, section of, ii. 19s 

 Spiral ganglion of the. car, ii. 376 

 ligament of the cochlea, ii. 379 

 Spirometer, i. 427 

 Splanchnic nerves, gastric fibres of, 1.382 



influence of, on blood-pressure, i. 173 

 on respiral ion, i. 463 



intestinal fibres of. i. 385 



stimulation of, i. 173 

 Spleen, composition of, i. 333 

 function of, i. 322 



Spleen, innervation of, i. 333 



movements of, i. 322 



vaso-motor nerves of, i. 207 

 Staircase contractions, ii. 66, 112 

 relation of, to tetanus, ii. 124 

 Standing, ii. 418 

 Stanniiis's Ligatures, i. L78 

 Stapedius muscle, ii. 370 

 Stapes, ii. 367 

 Starch, i. 566 



digestion of, i. 284, 305 



hydrolysis of. by acids, i. 286 

 by amylolytic ferments, i. 2-5 

 Starvation, effect of. on metabolism, i. 362 

 on tin- nervous system, ii. 289 



glycogen disappearance during, i. 331 



nutrition during, i. 350 



phosporus excretion in, i. 516 



potassium excretion in, i. 520 

 Stal ic equilibrium, organs of, ii. 407 

 Stature, relation of brain-weight to, ii. 276 

 Steapsin, i. 232, 280 



demonstration of. i. 306 



occurrence of. i. 305 

 Stearic acid, i. ."11 

 Stenson's duct, i. 217 



experiment, ii. 67 

 Stercorin, i. 575 

 Stereoscope, ii. 356 



Sterno-cleido-mastoid muscles, respiratorv ac- 

 tion of, i. 404 

 Sterno-hyoid muscle, ii. 425 

 Sterno-thyroid muscle, ii. 425 

 Sternum, respiratory movements of, i. 401 

 Stethograph, i. 423 

 Stimulants, effect of, on muscular work, ii. 75 



of the sweat glands, i. 260 



physiological action of, i. 357 

 Stimulation fatigue of non-medullated nerves, 

 ii. 180 



of the cortex, ii. 211 

 Stimuli, artificial, effect of, on the heart, i. 156 

 classification of. ii 23 



chemical, of muscle, ii. 131 



conditions determining efficiency of, ii. 28 



effect of changing intensity of. ii. 32 

 of their repetition on irritability, ii. 65 

 of varying strength of. ii. 39 



galvanic, contracture effect of, in muscles, ii. 

 131 



variations in intensity of. ii. 31 

 Stokes's reagent, composition of, i. 43 

 Stomach, absorption in, i. 312 



ex1 irpation of. i. 299 



Clauds of, i. 237 



immunity of, to its own secretion, i. 297 



innervation of, i. ::-l 



movements of, i. 377, 378 



musculature of. i. 377 

 Strabismus, ii. .".(in 

 Stria' acust icie, ii. 237 



gravidarum, ii. 477 

 Stromuhr of Ludwig, i. 99 

 St rout ium, i. 526 



Strychnin, action of. on diffusion of impulses in 

 Hie cord. ii. 217 

 on end-plates, ii. '.'7 

 on sympathetic ganglia, ii. 219 



effect of, on body-temperature, i. 172 



tetanus, ii. 217 

 Sturin, i. 580 



Stylo-byoid muscle, ii. 126 

 St ylonychia. reproduction of. ii. 442 

 Sublingual gland, anatomy of, i. 217 

 Submaxillary gland, anatomy of. i. 217 

 Successive contrast, ii. 3 Hi 

 Succinic acid. i. 557 



