THE CRAG. iSl 



additional types comprise species of tapir, the 

 Siwalik £Tyanarctos % hyaena, Hipparion, besides 

 deer, bear, and among marine animals a JIalitJic- 



FlG. 40.— I VCned variety, from the Red Crag. 



rium and a walrus with large tusks. The shells 

 are Int the dominance of a few- 

 types, such as the rev iriety of the Fusus 

 hich is ass with the common 

 whelk, the European c mon purple 

 shells, and E \rgi* 

 mild, Pectuncii ' 1 and Cardium, At 

 rwich the Red ( comes estuarine. The 



of the Norfolk coast may he a part of 

 its land . A patch of Crag is found north 



of Penzance, at S h, 98 feet above the 



ing deposit on the summit 



of the Chalk d - into pipes in the Chalk 



at Lenham in Kent, indicating that denudation 

 removed the Crag from the surface of the 

 country. 



All through the crag the temperature on the 

 east coast was becoming colder. This is evinced 

 by the presence of stones in the newer crag which 

 appear to have been floated southward in ice; 

 and it may be indicated by the increasing number 

 of shells which at the present day characterise 



