Shearer, Ncjve Terminations in the Selachian Cornea. 213 



Where these nerves enter the epitheUum around the cor- 

 neal border small fibrils are often given off which may be 

 traced for some distance winding in and out among pigment 

 cells which are always collected there in considerable num- 

 bers. Many of these fibrils enter into close relation with 

 these cells, in every case they can be shown not to end on 

 them although sometimes forming loops around them. Some 

 of these pigment cells presented the appearances of contraction 

 and expansion figured by Ballowitz, but no nerve endiags as he 

 describes in relation with them. 



Along the course of the nerves Fig. i, b, b, Fig. 3, c, 

 and scattered throughout the field are seen dark staining bod- 

 ies bearing processes looking like delicate nerves. These bod- 

 ies will be seen to be of varying size and shape, in some places 

 gathered together in clusters, in other places scattered and ir- 

 regularly disposed. In some cases a nerve will send off a deli- 

 cate fibril to one of these cells lying near to its course, in oth- 

 ers to terminate directly in it, but generally passing on to an- 

 other body further on. The processes coming off from these 

 bodies which are shown in Fig. 3, ^, ^, wind in and out among 

 the cells for a short distance and then become lost from view 

 and indistinct ; apparently not joining with one another. I 

 cannot help thinking these bodies are similar to the bodies 

 which Dogiel (2) describes as ending bodies in man. The fact 

 that they have these processes however seems to be against 

 this and one brings to mind the assertions of Inzani about special 

 terminal ends situated amongst epithelial cells and which Klein 

 (7) lays to imperfect specimens and bad technique. No bod- 

 ies similar to Dogiel's complicated "knaulchen" were met 

 with. 



That these nerves and bodies are within and limited to 

 the epithelium is easily demonstrated by transverse sections, 

 and by macerating the epithelium off from the cornea substance 

 proper. This method of maceration by over fixing is perhaps 

 the best way to obtain good preparations of these nerves and 

 bodies ; in some maceration preparations the epithelium which 

 comes off in one piece becomes broken into several pieces by the 



