r)44 



lUMN'KK I,. KOCH 



I he ii(M\(' ;(|)|)i'()uc.lu>{l the cavernous sinus tlio septa became 

 ('()iu|)Iet(>, and divided it into from five to eiglit fasicles of vary- 

 ing .size. Nowhere along the course of the undivided nerve were 

 unmyeUnated fibers seen within its substance. In sections of 

 the intra-ca^'ernous portion of the nerve a few clusters of un- 

 in>elinated fibers were seen approaching it, but could not be 

 followed into its substance. The characteristic grouping of 



Ocu. 



small fibers at the periphery of the nerve, noted by Gaskell and 

 Carpenter, could be seen most clearly in osmic acid preparations; 

 but not all of the small fibers were grouped at the periphery, nor 

 did they all leave the nerve to pass to the ciliary ganglion. The 

 cellular structures in the roots of the nerves, mentioned by 

 Gaskell and other observers, were not observed in our prepara- 

 tions, as even in the most proximal sections the roots had already 

 united to form a connnon trunk. 



