Fig. 1.- 



[192] 

 Vertical sections of borings in the Hartlepool area. 



HART. 



2 



Sea- 

 level 



Boulder 

 Clay. 



26' 



Yellow 

 Limestone 



Yellow 



Limestone, 



broken. 



Yellow 

 Limestone, 

 very much 



broken. 



Yellow 

 Limestone 



Yellow 



Limestone 



8i' io" 



"WEST 

 HARTLEPOOL 

 PULP WORKS. 



7 



