426 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
stains very deeply, and many nuclei are apparent which 
appear to lie at all levels with the exception of a narrow 
zone bounding the free surface of the cells. 
The nerve fibrils break up into finer processes 
amongst the cells, and form a very complex network 
around them. Many of the nuclei appear to belong to the 
nerve fibres, whilst others much rounder and lighter 
staining probably belong simply to supporting cells. The 
nerve fibrils can be traced from their nuclei to the edge 
of the hillock, where they are continued free as the long 
cilia, so that these are in reality the terminations of 
primitive neuro-fibrillae. 
NVM, 4, 
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Fic. 4. Section through abdominal sense-organ. x 300. 
There is, in addition to the covering of long cilia, 
another much narrower “seam” lying at the bottom of 
the cilia, and in fact having the appearance of a very 
thick cuticle formed of a number of delicate parallel rods. 
It has rather the appearance of another short layer of 
stiff cilia. These rods can also be traced for a short 
distance within the cells, 
