GEOLOGY OF FOLKESTONE THE GAULT. 



283 



surface of tlie rock on whicli it rests, and distinctly displaying the 

 variations in its tliickness. 



It abounds in the lower part, witli the remains of elephant, ox, 

 stag, hyaena, hippopotamus, Irish deer, &c., and, in the marly portion 

 numerous specimens of two or three species of Helix occur. 



The shells, however, are found both in the gTavel and in the calca- 

 reous marl above it, as well as m the cavities of the bones. 



Lign. 22. — Bull-dog Steps and Spring, Folkestone. 



This ossiferous bed appears to be cut off by the valley, above 

 refeiTed to, towards which it thins out altogether ; and no traces of 

 mammalian remains have been fou.nd on the east side of the town, 

 except those of Whale in the brick-earth at Porter's saw-mill. 

 On the west it thins off beneath a bed of dark brown brick-earth, 

 such as is found throughout the neighboming country. 



The presence of a breccia of chalk-flints, if it may be so termed, 



