562 



Outlines of the Geology 

 67 





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rounded appearance, becoming generally more level where 

 the chalk joins the inferior beds. In Thoresway Valley, the 

 red chalk, sand, and grey stone may be traced for nearly 4 

 miles to the eastward, after which they are again covered up 

 by the chalk. The valley, however, continues gradually to 

 descend, which is rendered evident by the fact that the water 

 from Thoresway spring, which rises at the junction of the 

 sand and the grey stone, instead of running to the outcrop of 



