NERVOUS CONSTITUENTS OF THE RETINA. 



255 



in the interior of the body of the cones. For my observations 

 show that we here find a compact mass of extremely fine fibres 



kr. 356. 



O" 



if -vf ??" v- -.'GV&SZ 



Fig. 356. From Man, showing the inner segments of the rods, s s s, 

 and cones, z z', the latter in connection with the cone granules and 

 fibres as far as to the outer granulated layer, 6. The cone z f is cha- 

 racterised by an unusually long bridge between the body and the 

 cone granule (the thicker peripheric part of the cone fibre). The 

 fibrillar structure of the interior of the inner segments of the rods 

 and cones is represented, magnified 800 diameters. B, Inner seg- 

 ment of a cone, with cone granule, and commencement of the cone 

 fibre in which the inner fibrillar portion does not extend so far to- 

 wards the limitans extema, magnified 1,200 diameters ; 0, isolated 

 fibre-cone from the interior of a cone, still shorter than the preceding 

 one, taken from a cone situated near the ora serrata. 



running longitudinally, which occupy -and form the entire sub- 

 stance of the body of the cone from the surface inwards, so that 



