ANATOMY AND PHYSIOLOGY OF NERVOUS SYSTEM. 



649 



1. The superficial layer. 



2. The layer of small pyramidal cells. 



3. The layer of large pyramidal cells. 



4. The layer of polymorphous cells. 



The first layer contains the cells of Cajal. In this layer termi- 

 , nate many *of the fibers coming from the spinal cord, medulla, and 

 cerebellum. 



Fig. 257. Median Sagittal Section Through the Interbrain and the 

 Structures Posterior to it. (EoiNGER.) 



The course of a number of coronal fibers is indicated by lines: Zur Brilcke, 

 To the pons. Pyramiden Fascrn, Pyramidal fibers. Haubenstrahlung, Tegmental 

 radiation. Zn den Opticuscentren, To the opticus centers. Haube, Tegmentum. 

 Pyramidenkreusung, Pyramidal decussation. 



The second layer contains the small pyramidal cells, whose 

 axons run into the superficial layer. 



The third layer contains the cells of Martinotti, with the large 

 pyramidal cells. 



The fourth layer is made up of triangular, small pyramidal, and 

 spindle cells. 



