AYES. 101 



FIG. IV. 



(THE SAME.) 



a. CRUS of the brain, proceeding from the anterior lobe, part of which has been 

 removed, b. Optic lobe, continued to the optic commissure, c. A process 

 from the thalamus to the optic commissure, d. Lateral lobe of the 

 cerebellum. 



1. Optic nerve. 



2. First trunk of the fifth. 



3. Second trunk of the fifth. 



4. Third trunk of the fifth. 



FIG. V. 



(THE SAME.) 



A SEPARATION has been made at the median line of the hemispheres of the brain 

 for showing the radiated septum. 



FIG. VI. 



(THE SAME.) 



ON cutting off a small portion of the summit of the brain on each side near the 

 median line, a narrow ventricle, deep at the internal part, extends nearly to the base 



