FOX-STRANGWAYS : FILEY BAY AND BRIGG. 
345 
arctic cold that existed during the deposition of the clays 
immediately above them. 
On the disappearance of the ice both marine and sub-aerial 
denudation ao;ain became very active, and the old bays and 
depressions of the coast, which had become obliterated by the clay, 
were carved out afresh to their present form. That this denudation 
is still rapidly going on there is abundant proof, some parts of the 
coast being stated to waste as much as from 2 to 4 yards in the 
year, so that in course of time Filey Bay may be enclosed by lofty 
cliffs of Chalk and Oolite with a small tidal river entering the sea 
between its shores. 
