INDEX. 



T79> 



Senses, special, 546 



organs of, development of, 700 

 Sensory centres in cerebral cortex, 529 

 Sensory impressions, conduction of, 458 

 by spinal cord, 482 



in brain, 522 



nerves, 458 



paths, 482 



Septum between auricles, formation of, 

 689 



between ventricles, formation of, 689 



luciduin, 689 

 Serine, 79, 735 

 Serous fluid, 327 

 Serous membranes, 326 



arrangement of, 326 



communication of lymphatics with, 

 302 



epithelium, 20 



fluid secreted by, 327 



functions, 326 



lining joints, etc., 326 et seq. 

 visceral cavities, 326 



structure of, 326 

 Serum, 



of blood, 78 



albumin, 735 



separation of, 78 

 Seventh cerebral nerve, 538 

 Sex, influence on blood, 89 



influence on production of carbonic 

 acid, 188 



relation of, to respiratory movements, 



181 



Sexual organs and functions in the female, 

 634 



in the male, 640 

 Sighing, mechanism of, 195 

 Sight, 584. See Vision. 

 Silica, parts in which found, 753 

 Silicon, 753 



Singing, mechanism of, 196 et seq. 

 Single vision, condition of, 620 

 Sinus pocularis, 712 



rhomboidalis. 712 



urogenitalis, 712 

 Sinuses of dura mater, 162 etseq. 



of Valsalva, 104 

 Sixth cerebral nerve, 537 

 Size of field of vision, 611 

 Skatol, 272 



Skeleton. See Frontispiece. 

 Skin, 340 



absorption by, 352 

 of metallic substances, 352 

 of water, 352 



cutis vera of, 342 



epidermis of, 340 



evaporation from, 350 



excretion by, 350 



exhalation of carbonic acid from, 351 

 of watery vapor from. 350 



functions of, 348 

 respiratory, 351 



glands, 344 



Skin continued. 



papillae of, 342 



perspiration of, 350 



rete mucosum of, 340 



sebaceous glands of, 345 



structure of, 340 



sudoriferous glands of, 344 

 Sleep, 514 

 Smell, sense of, 563 



conditions of, 563 



delicacy, 566 



different kinds of odors, 566 



impaired by lesion of facial nerve, 539 



impaired by lesion of fifth nerve, 537 



internal excitants of, 567 



limited to olfactory region, 563 



structure of organ of, 564 



subjective sensations, 566 



varies in different animals, 566 

 Sneezing, centre, 497 



mechanism of, 195 

 Sniffing, mechanism of, 196 



smell aided by, 563 

 Sobbing, 196 

 Sodium, 752, 753 



in human body, 752, 753 



sulphindigotate, 378 

 Solitary glands. See Peyer's. 

 Soluble ferments, 746 

 Somatopleure, 666 

 Somnambulism, 515 



Sonorous vibrations, how communicated 

 in ear, 575 et seq. 



in air and in water, ib. See Sound. 

 Soprano voice, 444 

 Sound, 



binaural sensations, 583 



conduction of by ear, 575 



heart, 121 



movements and sensations produced by. 

 584 



perception, 

 of direction of, 582 

 of distance of, 583 



permanence of sensation of, 583 



production of, 582 



subjective, 584 

 Source of water, 752 

 Spasms, reflex acts, 498 

 Speaking, 447 



mechanism of, 196, 447 

 Special senses, 547 

 Spectrum-analysis of blood, 84 

 Speech. 447 



function of tongue in, 549 

 Spermatozoa, development of, 642 



form and structure of, 652 



function of, 657 



motion of, 652 

 Spherical aberration, 602 



correction of. 602 

 Spheroidal epithelium, 23 

 Sphincter ani. See Defaecation. 

 Sphygmograph, 138 



tracings, 139 et seq. 



