793 



A TEXTBOOK OF PHYSIOLOGY 



Scratch reflex, 676, 677, 678, 680 



receptive field for, 67;"> 



Sebaceous glands, 487 

 Secretion, 368 



mechanism of, 358 

 Segmentation of ovum, 773 



rhythmic, 414 

 Semicircular canals, 655 

 Seminal fluid, 766 

 Sensations, cutaneous, 585 



Sensory mechanism, localization of, 727 



path from peripheral nerve. 711 

 Sera, foreign, haemolysis by, 106 

 Serin, 40 



Serum albumin of plasma, 84 



globulin of plasma, 83 



test for pregnancy, 777 

 Seventh nerve, function of, 699 

 origin of, 698 " 



Sex, determination of, 781 



diet under various conditions, 356 

 Sexual characteristics, 504, 505 

 Sexual life, female, 769 



Shellfish, composition and value of, 348 



Sighing, 296 



Sinu-auricular node, 119 



Sixth nerve, origin of, 698, 700 



Skiascopy, 617 



Skin, absorption by, 489 



current, 566 



effect of atmosphere upon, 499 



electric currents of, 564 



function of, 485 

 of pigment. 490 



parts of, 485 



respiratory function of, 489 



section of, 486 



sensations, 585 

 Sleep, 735 

 Smell, 593 



excitation of, 597 



receiving stations for, 729 



receptor mechanism of, 596 



sense of, investigation of, 597 



paths in connection with, 715 

 Snake venoms, haemolysis by, 107 

 Suellen's test-types, 637 

 Soaps, 55 



Sodium urate, 459, 471 

 Solubility of gases, 20 

 Solutions, hypertonic, 24 



physiological, 26 

 Sound, 650 



experimental production of, in sheep's 

 trachea, 740 



intensity of, 650 



pitch of, 650 



production of, 739 



quality of, 650 



wave, formation of, 651 

 Sounds of the heart, 154 

 Spectra, blood, 93 

 Speech, 729 



centre of, 731 



production of, 739 

 Spermatoxoon, 765, 766 



Spherical aberration of lens, 609 

 Sphingomyelin, 58 



Sphygmograph, Dudgeon, suspension 

 method of using the, 211 



investigation of, pulse by, 212 



Jacquet's, pulse tracing by, '21 ." 

 Sphygmometer, armlet, 188 



Leonard Hill pocket, 189 

 Sphygmoscope, 188 

 Spinal accessory nerve, 691 



arc, 672 



bulb, white matter of, 694 



cord, 662 



as reflex centre, 674 



commissural, fibres of, 670 



conductor, impulses of, 672 



effect of, transverse section through, 



673 



embryonic, 664 



exogenous tracts of, 667 



functions of, 672 



posterior columns of, necrotic areas 



in, 311 



reflex action of, 674 



sections of, 665, 666 



structure of, 663 



tracts, 666 ' 



tracts from brain to, 669, 670 



tracts of from posterior root ganglia. 



668 



nerve, mixed, arrangement of, 749 

 Spiuo-thalamic tract, 670 



Spirits, alcohol percentage of, 365 

 Spirometer, 280 

 Splanchnic area, 198 



nerves, effect of stimulation of, 429, 510 



organs, 246 

 Spleen, 247 



function of, 447, 451 

 Stapedius, 646 

 Stapes, 644 



Starch, action of gastric juice on, 387 



Starches, 65 



Starvation, metabolism during. 333 



Stearin, 54 



Stereoscope, 635 



Stimulus of muscle, strength of, f>4."> 



of nervous system, 7 

 Stomach, absorption in, 388 



contents, examination of, 388 



digestion in, 379 



digestive processes in, 385 



movements of, 411' 



of cat, changes in shape during diges- 

 tion, 407 



digestion in, 406 



shadows of contents after feeding, 



411 



outline of, 379 



position of, 380 



why not itself digested, 388 

 Stress, lines of, 758, 759 

 Stromuhr, 203, 204 

 Strychnine convulsions in frog, 684 

 Stylonyehia, enucleated, fragments of. 7GO 

 Sublingual gland, 374 





