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Emily M. Berridge. 
for the distance between the tip of the outer integument and the 
flange. The latter extends downwards in a fringe of long hairs 
which, normally, completely close the crevice between the inner 
and outer integuments. Thus the delicate structures within the 
young seed are effectively guarded from the entrance of fungal 
Fig. 3. Transverse section showing the micropyle completely blocked, 
the passage ( p .) only indicated by the crushed remains of cells, x 125. 
Fig. 4. Transverse section at point where micropylar canal begins to 
reappear, showing ingrowing cells on one side, x 330. 
spores or minute insects either through this interstice, or by way 
of the micropyle. The micropylar passage is only blocked for a 
short distance, but when it reappears the cells lining it are torn 
and crushed, and only at a lower level can a very delicate internal 
epidermis be distinguished (Fig. 5). 
