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PROCEEDINGS OE THE GEOLOGICAL SOCIETY. 



[Apr. 24, 



difficulty is at these places to obtain the positive evidence of super- 

 position. At the pit first mentioned, near Bidgemont, the gravel is 

 continuous throughout, and no Boulder-clay is seen; but at the 

 adjacent old pit I found distinct traces of a bed of red clay capping 

 this gravel, whilst at Kelsey Hill the high face of sand and gravel 

 at the west end of the pit shows a slight intercalation, near the top, 

 of a bed, 1| foot thick, of pebbly clay. There is also some higher 

 ground in the neighbourhood which seems capped by clay. 



Section at the west end of the Ballast-pit, Kelsey Hill. 



W. E. 

 ft. in. ^ '■■m*"- . . .. ■^v.^^.::-^^.^^^M»t)m 



~- - - -- a. Gravel. 



a _ „ .. ... ■■■ - --- - 



1 6 id!?" ill ^ a J' with large pebbles. 



o...: .. ^ - • 05::©^;;;^; c. \ cry coarse gravel. 

 - °- o" o o <= J c ..c- -^ •„.. .: — • 



Seams of sand and gravels. 



'X^ = , Fine sands, traversed by 



.. . / a number of small faults *: 



~ ' , some few shells. 



Taking this section in conjunction with the boring, we have here 

 a thickness of 60 feet of sands and gravels f. This, it is true, is un- 

 usual on the coast, and it might be asked whether these upper beds 

 of gravels and sand are not reconstructed out of the clays and gravels 

 of the Boulder-clay. It has, however, to be observed that in this more 

 inland portion of the Boulder- cla}- it would seem that the beds of 

 gravel and sand are altogether more generally developed — a fact 

 shown in the two following and other well-sections, for which I am 

 indebted to Mr. Smith. 



* The middle part of the section is so obscured that I could not ascertain 

 whether the faidts proceeded upwards through the beds d to a. 



f The hillock rose in one part (now removed) 56 feet above the marshes. 



