414 



Dr. Fitton on the Strata 



of the lateral vallies, thai coiitril)ute streamlets to the Evenlode, 

 a tortuous rivulet, the griieral course of which is from north- 

 west to south-east ; aud the beds that supply the " slate" (as it 

 is called), are, on an average, about fifty feet below the summits, 

 and are excavated by numerous workings on both sides of the 

 ravines; the agreement between the strata thus disclosed in the 

 separate shafts affording the most satisfactory proof that can be 

 imagined of their continuity. We descended by one of these 

 shafts into a drift or gallery; and what we saw, the workmen 

 assured us, might be taken as fairly representing the section of 



the pits in general. — 



nubbly limestone; (Cornbrash.) 

 Clay, with Terebratulitea, Sfc, 

 *' Rock". Limestone. 

 Blue clay. 



5. " Rock'\ Oolite. 



6. Blue clay. 



7. "jRog-." Oolitic limestone. 



8. Sandy bed, containing the " Slate 



