xxx CONTEXTS. 



' PACE 



§ 459. The characters of a reflex movement dependent on the strength of 



the stimulus 099 



§ 400. The characters of a reflex movement dependent on the part of the 



body to which the stimulus is applied 700 



§ 461. The complexity of many reflex movements; their relation to intel- 

 ligence 700 



§ 402. Reflex movements coordinated by afferent impulses other than the 



exciting impulses 702 



§ 403. The characters of a reflex movement determined by the intrinsic 



condition of the cord 703 



§ 404. The reflex movements carried out by the spinal cord in man . . 704 

 § 405. Reflex actions resulting in changes other than movements . . 700 



§ 400. The inhibition of reflex actions 707 



§ 407. The time required for reflex actions 709 



SECTION IV. 



The Automatic Actions of the Spinal Cord. 



§ 408. Automatic actions of the spinal cord in the frog and in the dog . 711 



§ 409. Automatic activity dependent on afferent impulses .... 712 



§ 470. Tone of skeletal muscles 713 



§ 471. Tendon phenomena, knee jerk 717 



§ 472. Rigidity of muscles through spinal action 717 



CHAPTER II. 

 The Brain. 

 SECTION I. 



On the Phenomena exhibited by an Animal deprived of its 

 Cerebral Hemispheres. 



§ 473. The absence of distinct signs of volition and intelligence . .719 

 § 474. The characters of the movements of a brainless frog . . . 720 

 § 475. The phenomena exhibited by birds after removal of their cerebral 



hemispheres ........... 723 



§ 470. The effects of removing the cerebral hemispheres in mammals . 725 

 § 477. The effects of removing the cerebral hemispheres in the dog . . 727 



SECTION II. 



The Machinery of Coordinated Movements. 



§ 478. The effects of injury to the semicircular canals. Our appreciation 

 of the position of our body, the sense of equilibrium. Afferent 

 impulses and sensations as factors of the coordination of move- 

 ments 720 



