THE SOUTH-EASTERN COALFIELD 



397 



the beds between the Gault and the Coal Measures. This is 

 illustrated by the section (Fig. 2) and the following table : 



Ropersole. Waldershare. Fredville. 

 72 70 53 



528 352 339 



27 5(?) io(?) 



VI. The Upper Cretaceous Rocks. 



In order to appreciate the significance of the circumstances 

 affecting sinking progress in East Kent, it is necessary to con- 



LlihJCC BtjfC 



<vAiDf/?5«<i*'c eorrt 



TIL MA/V5 TONE CCLLICH1 









V 



- % 4 , & A 



.-V^ X 



COAL M£ASUff€S 





Fig. 2. 



Rough Section from Ellinge Bore to Waldershare Bore, produced to Tilmanstone Pit. 



Scales : Horizontal, I in. to I mile ; Vertical, ^ 7 . 



sider for a moment the nature of the chalk from the point of 

 view of a mining engineer. 



Never before in England have pits been sunk through this 

 formation ; consequently the Chalk has been studied only by 

 stratigraphers, palaeontologists, and civil engineers interested 

 in water supply. As this formation has a thickness of nearly 

 800 ft. in the area under discussion, it is evident that it is 

 worth while uniting these different aspects, which is now done 

 for the first time. 



