CEREBELLUM OF MAMMALIA. 



95 



others at an acute angle, several laminae, each of which forms 

 the stem of a number of other branches. Each of the primary 

 branches is the foundation or central stem of a lobule. Lamina? 

 of fibrous matter are seen branching from both sides of it imme- 

 diately after its separation from the nucleus. Sometimes the 

 primary branch bifurcates, and each division of it forms the stem 

 of what may be called a sub-lobule. If we suppose that one of 

 the primary branches is composed of a certain number of laminae 



60 



Dissection of the formative columns of tlie ep-, mes- and pros-encephalon. 



of fibrous matter, the secondary ramifications from it will in a 

 great degree correspond. In most instances these secondary 

 branches subdivide into two or more tertiary ones, which, as well 

 as the branch from which they spring, are enclosed in grey matter. 

 A vertical section of the median lobe, fig. 58, gives a similar 

 appearance to that of the hemispheres, fig. 66, c. The central 



