2l6 



Journal of Comparative Neurology. 



As to the distribution of this network it seems to be uni- 

 formly all over the surface of each lamella. No large trunks are 

 ever seen to join it from the border and going to form it. The 

 nerves composing it appear to be very continuous, where an ap- 

 parent ending takes place the fiber seems to fade out in a manner 

 which renders it impossible to tell whether it is a free ending or 

 not. 



Fig. ^. Fine plexus of the cornea substance proper, methylene blue, show- 

 ing the right angled courses of the fibers. Zeiss homog. immers. oc. 6. Camera. 



To sum up. The chief peculiarities presented by the 

 nerves of the selachian cornea are : 



1. The relatively straight, thick, nerve trunks which run 

 in the anterior epithelium and their parallel courses with rela- 

 tion to one another. 



2. The dark bodies into which these nerves run and some- 

 times terminate. 



3. The unbranching condition of these nerve fibres. 



4. The lack of apparent relation between the nerves of 

 the epithelium with those of the cornea substance proper and 

 the lack of all nerve fibers in the cornea stroma proper simi- 

 lar to these nerves of the epitehlium. 



