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magnifying power used, the glomeruli present the appearance of ellip- 
tical or pear-shaped bodies with fibres entering their pointed ends. 
Fig. 14 is from a still lower level. Groups of nerve fibres from 
both division (a) and (b) are seen passing between the folds of the 
Fig. 14. Section at a lower level. 
olfactory membrane. In older stages some of these fibres have beer 
traced into connection with nerve-cells located in the olfactory epi- 
thelium. The median nerve (nv) has been cut obliquely and a portion 
of it is seen joining the nerve fibres from division (a) of the main 
olfactory. Histological study shows that the median nerve (nv) con- 
tains numerous rounded cells distributed among its fibres for the 
larger part of its course. This nerve and its branches can therefore 
be readily distinguished from the main olfactory until its smaller 
branches are reached. There, the disappearance of the rounded cells, 
make it very difficult to distinguish between fibres from the main 
olfactory and those from the median nerve. They pass in very close 
association into the olfactory membrane. — 
