447 



The fibres in life are transparent, but reagents render them 

 opaque. They stain readily and deeply with carmine, haematoxyline, 

 Weigert's stain, and are blackened by osmic acid. At no part of 



Fig. 3. A portion of the cerebellar ventricle, to illustrate the confluence of the 

 smaller into larger fibres. 



the course of the large trunks is there 

 indication of a sheath, and only oc- 

 casionally do they show fibrillar 

 structure, so closely are the component 



Fig. 5. 



Fig. 4. A part of the above at X more highly magnified, to show the relation 

 of the terminal fibrils to the ependyma cells of the ventricle. 



Fig. 5. Sections of the ventricular cavity transverse to its long axis to show 

 relation of the large fibre to the ependyma wall. 



