624 HOWARD. [Vot. XIX. 
GENERAL. 
The fibrils which are seen in the three kinds of visual cells 
and pass from the outer limbs into the outer reticular layer 
seem to be intercellular neurofibrils. Their function is pre- 
sumably that of conducting nerve impulses from the end-organ 
to. the more central elements of the retina, ultimately to the 
optic centers. That these fibrils may arise from more central 
retinal elements and penetrate the more peripheral ones is 
conceivable, but in my opinion they have more probably taken 
their origin in the visual cells themselves. 
V.. /bIBIMO GRAPE N. 
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