134 



LECTURES ON THE CENTRAL NERVOUS SYSTEM. 



4. The folium cacuminis, at the posterior extremity of the 

 vermis. 



On the dorsal surface of the hemispheres we can distinguish: 



1. The anterior upper lohe, also called the lobus quadran- 

 gularis, on each side of the monticulus. In front of it are the 

 alee lobuli centralis. 



2. The posterior upper lobe (lobus semilunaris superior). 

 Both posterior upper lobes are connected by the folium cacumi- 

 nis. The following cut shows the lobes of the under surface of 

 the cerebellum. It presents a somewhat complicated appearance. 



FIG. 79. 

 The cerebellum. Ventral surface. 



Bimle A., Anteric* cerebellar peduncles. 



In order to obtain a good view we must first sever the connec- 

 tions of the cerebellum with the mid-brain, the pons, and the 

 medulla oblongata. Thus, on each side are the three cut sur- 

 faces of the three cerebellar peduncles. Between the anterior 

 peduncles lies a thin membrane, the velum medullare anticum, 

 which is a part of the roof of the hind-brain. It is shown cut 

 through in the figure. 



The lobes on the under surface of the vermis are called 



1. The nodulus. 



2. The uvula. 



