728 WITHOUT CEEEBEAL HEMISPHERES. [BOOK m. 



the removal of the cerebral hemispheres, even though conscious 

 volition and intelligence appear to be largely, if not entirely, 

 lost, the body is still capable of executing all the ordinary 

 movements which the animal in its natural life is wont to per- 

 form, in spite of these movements necessitating the cooperation 

 of various afferent impulses; and that therefore the nervous 

 machinery for the execution of these movements lies in some 

 part of the brain other than the cerebral hemispheres. We 

 have reasons for thinking that it is situated in the structures 

 forming the middle and hind brain; as we shall see, interfer- 

 ence with these parts produces at once remarkable disorders of 

 movement. 



