INDEX. 



747 



Sobbing, 345 

 Solar spectrum, 587 

 Somatopleure, 660 

 Sound, 594 



amplitude of vibration, 596 



conduction of, 598 



conduction of, through the ear, 

 601 



conveyance of, in cochlea, 607 



over-tones, 597, 609 



pitch of note, 595 



quality of notes, 596, 609 



rate or period of vibration, 595 



tone, noise, 608 



tones or musical notes, 596 



transmission of, 596 



transmission of, to the brain, 609 

 Sounds, classification of, 492 

 Special reflex centres, micturition, 



etc., 625 

 Special senses, 532 



smell, 551 



taste, 548 



touch, 539 



vision, 554 

 Spectrum, solar, 587 

 Speech, 491 

 Spermatozoa, 650 

 Sphenopalatine ganglion, 526 

 Spherical aberration, 573 

 Sphygmograph, Marey's, 304 

 Spinal accessory nerve, 528 

 Spinal cord, 611 



automatic centres in the, 611 



centres presiding over tonic mus- 

 cular contraction, 626 



coordination of movements, 618 



decussation of fibres in the, 616 



development of, 677 



direction of nerve fibres in the, 

 614 



effect of section of, 616 



ganglion cells in the, 611 



nerve cells in the, 612 



reflex action in the, 617 



sweating centres in the, 626 

 vaso-motor centres, 626 

 white and gray substance of, 611 

 Spinal ganglion, 519 

 Spinal nerves, 517 



anterior and posterior roots of, 



615 

 Spiral lamina of cochlea, 605 



Splanchnopleure, 661 

 Spleen, 365 



changes of blood in, 368 



development of, 688 



functions of the, 367 

 Splenic pulp, 365 

 Sputum, 376 

 Standing, 478 



Stapedius muscle of ear, 602 

 Stapes, 601 

 Starch, tests for, 141 



into grape-sugar, conversion of, 



140 



Starvation, 414 

 Stationary air, 338 

 Steno's duct, 128 

 Steapsin, 161 



Stirrup bone of ear, stapes, 601 

 Stomach, digestion, 143 



epithelium of, 144 



development of, 685 



structure of, 113 



motion of, 113 



nerve influence on, 114 

 Striated muscle, 440 

 Sublingual gland, 129 

 Submaxillary ganglion, 527 



gland, 129 



Sudoriferous glands, 383 

 Summation, 464, 620 

 Supra-renal capsule, 362 

 Suspensory ligament of lens, 560 

 Sutures, 475 

 Swallowing, 107 



Sweat, chemical composition of, 384 

 Sweat glands, 383 



Sweating centres in spinal cord, 626 

 Symphysis, 476 

 Syntonin, 61 

 Systole, 263 



Tactile nerve endings, 511 



Tambour, Marey's, 268 



Taste buds, 548 

 sense of, 548 



Taurin, 68 



Tauro-cholic acid, 65, 171 



Tegmentum, 640 



Temperature, external variations of, 



435 



internal variations of, 434 

 maintenance of uniform, 432 



