INDEX. 



635 



Keepiration in tissues, 391. 



Respiration and circulation in as- 

 phyxia, 399. 

 in mammal, 406. 

 by skin, 412. 



Rigor mortis, 206. 



Rhythm, SI. 

 law of, 269. 



Rudimentary organs, 46. 



Salts, 144, 276. 



inorganic, 420. 

 Saliva, 297. 



amylolytic action of, 297. 

 Scar-tissue, 139. 

 Serum, composition of, 161. 

 Secretion as a physiological process, 



of salivary glands, 311. 



by stomach, 316, 321, 



of bile and pancreatic juice, 316. 



nature of the act, 318. 



of urine, 421. 

 Secretory fibers, 582. 

 Segmentationandsubsequentohanges, 



64. 

 Self-digestion of digestive organs, 



323. 

 Sense organs, 31. 

 Sexual selection, 43. 

 Separation of muscle from central 



nervous system, 201. 

 Semicircular canals, function of, 484. 

 Sighing, 402. 

 Senses, general remarlis, 516. 



of smell and taste, 673. 

 Skin as an organ of sense, 620. 

 Smell, 573. 

 Sleep, 501. 

 Sobbing, 402. 

 Solidity, 648. 

 Soap, 146. 

 Sneezing, 402. 

 Special considerations re muscle, 203. 



circulation, 265. 



Special considerations re digestion, 

 369. 



metabolism, 450. 



spinal cord, 477. 



brain, 510. 



vision, 551. 



hearing, 568. 



voice, 600. 

 Specific gravity of urine, 419. 

 Spermatozoa, 61. 

 Sphygmograph, 243. 

 Spinal cord, general, 461. 



reflex functions of, 466. 



as a conductor of impulses, 469. 



automatic functions of, 476. 



nerves, 579. 



accessory, 587. 

 Sporangia, 17. 

 Starches, 147. 



Study of metabolic processes, 436. 

 Submaxillary ganglion, 586. 

 Succus enterious, 307. 

 Sugars, 146. 

 Summary of biology, 9. 



of evolution, 50. 



of reproduction, 93. 



development of the embryo, 135. 



physiological research, etc., 162. 



blood, 169. 



muscle and nerve, 206. 



circulation, 269. 



blood-cells, 158. 



digestion, 364. 



respiration, 406. 



perspiration, 413. 



urine, 426. 



metabolism, 458. 



voice, 601. 

 Synoptical re spinal cord, 479. 



brain, 513. 



skin, 526. 



vision, 554. 



hearing, 672. 

 Swallowing, 335. 



