IXDEX. 



8l 7 



Spasms, reflex acts, 507. 

 Speaking, 614. 



mechanism of, 224. 

 Special sense. Sec Senses. 

 Spectrum-analysis, 86. 



of blood, 86. 



Spectrum, ocular, 659-61. 

 Speech, 619. 



function of tongue in, 622. 



influence of medulla oblongata 



on, 517. 

 Spermatozoids, development of, 734. 



form and structure of, ib. 



function of, 735. 



motion of, 734. 

 Spherical aberration, how corrected 



in the eye, 648. 

 Spheroidal epithelium, 30. 

 Sphincter ani, 



external, 345. 



internal, 310, 345. 



influence of spinal cord on, 501, 



508. 



Sphygmograph, 146. 

 Spinal accessory nerve, 564. See 



Accessory nerve. 

 -Spinal cord, 488. 



canal of, 490. 



a collection of nervous centres, 

 508. 



columns of, 494. 



commissure of, ib. 



conduction of impressions by, 



495-499- 



course of fibres in, 491. 



decussation of sensitive im- 

 pressions in, 499. 



effect of injuries of, on conduc- 

 tion of impressions, 496. 

 on nutrition, 386-88. 



enlargement of parts of, 493. 



fissures and furrows of, 490. 



functions of, 496-509. 

 of columns, 496. 



influence of on heart's action, 128- 

 on lymph-hearts, 366, 508. 

 on sphincter ani, 500, 508. 

 on tone, 509. 



morbid irritability of, 507. 



nerves of, 493-95. 



reflex function of, 500. Sec Re- 

 flex action. 



size of parts of, 492. 



structure of, 490. 



Spinal, cord, continued. 

 transference and radiation in, 



. 485, 499- 

 Spinal nerves, 



origin of, 493. 



physiology of, 564. 

 Spiral canal of cochlea, 676. 



lamina of cochlea, 677. 



function of, 691. 

 Spleen, 



as a blood-forming organ, 417. 



in relation to digestion, 418. 

 to portal circulation, ib. 



hilus of, 412. 



Malpighian corpuscles of, 413. 



pulp, 412. 



structure of, 411. 



trabeculffi of, 411. 



stroma of, 412. 

 Splenic vein, blood of, 87. 

 Spontaneous decomposition, 9. 

 Spot, germinal, 720. 

 Squamous epithelium, 30. 

 Stapedius muscle, 674. 



function of, 688. 

 Stapes, 674, 676. 

 Starch, 



action of cooking on, 286. 

 of pancreatic secretion, 313. 

 of saliva, 262. 

 of various substances, ib. 



animal, 334. 



digestion of in small intestine, 



339- 



111 stomach, 286. 

 Starvation, 250. 



loss of weight in, 250. 

 effect on temperature, 251. 

 symptoms, 251. 

 period of death in, 252. 

 appearance after death, 252. 

 Statical pressure of blood, 152. 

 Stature, relation to capacity of 



chest, 202. 

 Stearin, 10. 



Stellate nerve-corpuscles, 474. 

 Stercorin, 342. 



allied to cholesterin, 323. 

 Stereoscope, 671. 

 Still layer in capillaries, 163. 

 Stimuli, as excitants of contrac- 

 tility, 590-92. 

 of sensation, 476, 478. 

 of special senses, 624-26. 

 3 G 



