8i6 



INDEX. 



Serous membranes, continued. 

 lining joints, etc., 396. 



visceral cavities, ib. 

 purpose of, 396. 

 stomata, 353. 

 structure of, 395. 

 Serum, 



of blood, 78. 



chief source of albumen, 13. 

 separation of, 60, 78. 

 Seventh cerebral nerve, auditory 



portion, 679, 692. 

 facial portion, 550. 

 Sex, influence on blood, 83. 



influence on production of car- 

 bonic acid, 211. 



relation of to capacity of chest, 203. 



to respiratory movements, 198. 



Sexual organs and functions in the 



female, 714-731. 

 in the male, 731-739. 

 Sexual passion, connection of with 



cerebellum, 528. 

 Sighing, mechanism of, 221. 

 Sight. See Vision. 

 Silica, parts in which found, 17. 

 Singing, mechanism of, 614. 

 Single vision, conditions of, 664. 

 Sinus terminalis, 750. 



urogenitalis, 779. 

 Sinuses of dura mater, 181. 

 Sixth cerebral nerve, 541. 

 Size of field of vision, 654-657. 

 Skin, 419. 

 absorption by, 437. 

 of gases, 439. 



of metallic substances, 437. 

 of water, ib. 

 capillaries of, 161. 

 cutis vera of, 421. 

 epidermis of, 419. 

 evaporation from, 439. 

 excretion by, 432-437. 

 exhalation of carbonic acid from, 



436. 



of watery vapour from, 434. 

 functions of, 419. 



respiratory, 436. 

 papillfe of, 423-426. 

 perspiration of, 433. 

 rete mucosum of, 420. 

 sebaceous glands of, 428. 

 structure of, 419. 

 sudoriparous glands of, 426. 



Sleep, influence of on production of 



carbonic acid, 215. 

 Smell, sense of, 630. 



conditions of, 630. 



different kinds of odours, 634. 



impaired by lesion of facial nerve, 



551- 

 impaired by lesion of fifth nerve, 



547- 



internal excitants of, 635. 

 limited to olfactory region, 633. 

 relation to common sensibility, 



633. 



structure of organ of, 631. 

 subjective sensations of, 635. 

 varies in different animals, 634. 

 Sneezing, caused by sun's light, 486. 



mechanism of, 223. 

 Sniffing, mechanism of, 224. 



smell aided by, 631. 

 Soda, salts of in blood, 80. 

 in solids and fluids, 1 7. 

 Sodium in human body, 17. 



chloride of, in albumen, 13. 

 Solid food, action of gastric fluid on, 



276. 



Solitary glands, 301. 

 Sonorous vibrations, how communi- 

 cated in ear, 683, c. s. 

 in air and water, 683. See Sound. 

 Soprano voice, 614. 

 Sound, 



conduction of by ear, 679. 

 by external ear, 680-682. 

 by internal ear, 689-692. 

 by middle ear, 683-689. 

 movements and sensations pro- 

 duced by, 697. 

 perception of, 692. 

 of direction of, 693. 

 of distance of, 694. 

 a state of the auditory nerve, 



695- 



permanence of sensation of, 694. 

 produced by contraction of mus- 

 cle, 590. 



production of, 692. 

 subjective, 696. 

 Sounds as expressions of passion, 



614. 



classified, 614. 

 of heart, 119. 



causes of, 120. 

 Sources of nervous force, 484. 



