868 



INDEX. 



PAGE 



Skin, absorption by 286 



physiological anatomy of 342 



quantity of exhalation from 356 



action of, in the equalization of the ani- 

 mal heat 357, 456 



tactile papillaa of 515 



development of 818 



Skull, development of 817 



Sleep 647 



condition of the brain and nervous system 



in 649 



produced by pressure on the carotids 650 



conditions of various functions in 651, 652 



Smegma of the prepuce and of the labia mi- 



nora 325 



Smell (see Olfaction) 658 



Sneezing 129 



Snoring 128 



Sobbing 130 



Sodium chloride, uses of, in the blood 21 



uses of in alimentation 175 



as a condiment. ... 181 



Solitary glands of the intestine 239 



SOmmerring, yellow spot of 681 



Sound, physics of 737 



laws of vibrations of 738 



propagation of 738 



reflection of 739 



refraction of 739 



shadows of 739 



rapidity of transmission of 739 



noisy and musical 739 



pitch of 740 



range of, in music 740 



musical scale of 740 



quality of 742 



harmonics, or overtones of 743 



resultant tones of 745 



summation tones of 745 



harmony of 745 



chords of 746 



discords of 746 



beats in 747 



tones by influence in (consonance) 747 



Sounds of the heart 44 



Speech, mechanism of 501 



Speech-centre 621 



Spermatic crystals 790 



Spermatine 790 



Spermatoblasts 792 



Spermatozoids 791 



duration of the vitality of, in the female 



generative passages 791, 795 



development of 792 



in advanced age 793 



penetration of, through the vitelline mem- 

 brane -. 796 



Spheno-palatine ganglion 638 



Sphymograph 68 



Sphincter of the anus 261, 209 



of the rectum 269 



of the bladder 371 



Spices 181 



Spina biflda 817 



Spinal accessory nerve 557 



physiological anatomy of 557 



Spinal accessory nerve, properties and uses of.. 559 

 uses of the internal branch of 559 



influence of, upon phonation 560 



influence of, upon deglutition 560 



influence of, upon the heart 56, 560 



uses of the external, or muscular branch 



of, going to the sterno-cleido mastoid and 



trapezius muscles 561 



Spinal column, development of 817 



twisting of, in the embryon 817 



Spinal cord, rate of conduction by 528 



physiological anatomy of 586, 589 



direction of the fibres in 593 



general properties of 594 



motor paths in 595 



sensory paths in 595 



hyperffisthesia due to injury of portions of. 596 



uses of, in connection with muscular co- 

 ordination 596 



nerve-centres in 597 



reflex action of 598 



development of 819 



Spinal nerves 538 



distinction between motor and sensory 



roots of 522, 538 



Spleen, relations of, to the blood-corpuscles. 



11, 418 

 proportion of leucocytes in the blood of 



the veins of 14, 418 



physiological anatomy of 413 



blood-vessels, nerves, and lymphatics of.. 415 



chemical constitution of 416 



variations in the volume of 417 



extirpation of 417 



uses of 418 



development of 824 



Stapedius muscle 734 



Stapes 733 



development of 827 



Starch '. 171 



Steapsine 240, 250 



Stearine 174 



Steno.ductof 195 



Stercorine 265 



Stereoscope 716 



Sterno-mastoideus, action of, in respiration 122 



St. Martin, case of 216 



Stomach, physiological anatomy of 211 



glands 214 



. closed follicles of 216 



secretion of (gee Gastric juice) 218 



changes in the appearance of the mucous 



membrane of, during the secretion of gastric 



juice 218 



extracts of the mucous membrane of 218 



duration of digestion in 228 



digestibility of different aliments in 229 



influence of the pneumogastrics upon 230 



influence of the nervous system upon 230 



movements of 230 



regurgitation of food from 232 



gases of 232 



development of 823 



Strabismus, external . . 542 



internal 547 



Sty loid ligament, development of 827 



