INDEX. 



651 



Speech, influence of medulla oblongata 



on. 408 



Sperinatozoids, development of, 574 

 form and structure of, 574 

 function of, 574 

 motion of, 574 

 Spherical aberration, how corrected 



in the eye, 509 

 Spheroidal epithelium, 35 

 Sphincter ani, external, 276 

 internal, 249, 276 

 influence of soinal cord on, 396, 



401 



Sphygmograph, 124 

 Spinal accessory nerve, 443. See Ac- 

 cessory Nerve. 

 Spinal cord, 386 

 canal of, 388 

 a collection of nervous centres, 



401 



columns of, 391 

 commissure of, 391 

 conduction of impressions by, 



392-395 



course of fibres in, 389 

 decussation of sensitive impres- 

 sions in. 394 

 effect of injuries of, on conduction 



of impressions. 393 

 on nutrition, 308-310 

 enlargement of parts of, 390 

 fissures and furrows of, 388 

 functions of, 393-402 



of columns, 392 



influence of on heart's actions, 112 

 on lymph-hearts, 293, 



401 

 on sphincter ani, 396, 



401 



on tone, 402 



morbid irritability of, 401 

 nerves of, 390-392 

 reflex function of, 395. See Re- 

 flex Action, 

 size of parts of, 390 

 structure of, 388 . 

 transference and radiation in, 



384, 395 

 Spinal nerves, origin of, 390 



physiology of, 443 

 Spiral canal of cochlea, 531 

 lamina of cochlea, 532 



function of, 542 



Spleen, as a blood-forming organ, 331 

 in relation to digestion, 332 



to portal circulation, 332 

 hilus of, 327, 328 

 Mulpighian corpuscles of, 328 

 pulp, 328 

 structure of, 327 

 trabeculae of, 327 



Spleen, stroma of, 327 

 Splenic vein, blood of. 79 

 Spontaneous decomposition, 19 

 Spot, germinal, 565 

 Squamous epithelium, 34 

 Stapediu-s muscle, 529 



function of, 540 

 Stapes, 529, 530 

 Starch, action of cooking on, 230 



of pancreatic secretion, 251 

 of saliva, 212 

 of various substances, 212 

 animal, 267 

 digestion of in small intestine, 



271 



in stomach, 230 

 Starvation, 203 



loss of weight in, 203 

 effect on temperature, 204 

 symptoms, 204 

 period of death in, 204 

 appearances after death, 204 f 



Statical pressure of blood. 129 

 Stature, relation to capacity of chest, 



167 



Stearin, 20 



Sellate nerve-corpuscles, 375 

 Stercorin, 274 



allied to cholesterin, 260 

 Stereoscope, 526 

 Still layer in capillaries, 137 

 Stimuli, as excitants of contractility, 



463-465 



of sensation, 377, 379 

 of special senses, 491, 492 

 St. Martin, Alexis, case of, 220, 223, 



227 



Stomach, bloodvessels of, 219 

 development of, 607 

 digestion in, 225-230 



influence of nervous system 



on, 234 



digestion of after death, 236 

 examined through fistulse, 220, 



226 

 glands of, 216 



lenticular, 219 

 tubular, 216 

 movements of, 231 



influence of nervous system 



on, 236 



in vomiting, 232 

 mucous membrane of, 215 

 muscular coat of, 215 

 passage of substances from to 



urine. 354 



presence of not absolutely dis- 

 tinctive of animals, 17 

 in relation to hunger, 234 

 secretion of, 219. See Gastric 

 Fluid. 



