9b PROF. J. PEESTWrCH ON THE RELATION OF THE 



hand to the Fluvio-marine Crag, aud on the other to the Glacial 

 beds in Suffolk and Norfolk. 



The composition of the shingle will engage our particular atten- 

 tion, as it is an instance in which the evidence afforded by it is of 

 more stratigraphical value than that of the fossils, as the latter are 

 confined to the sea-board of the Eastern Counties, while the former 

 has to be our guide over the wide inland area. 



I will now drop the term " Pebbly Eeds," which, although con- 

 venient as a temporary term, marking, as it does, a very distinctive 

 character, has the inconvenience of defining a feature common to 

 many other strata, as, for example, the Pebble-beds of the Bagshot 

 Sands, or those of the Woolwich and Blackheath Beds. It is like 



Fig. 1. — General Section of the Westleton Beds on Westleton Com 



mon. 





a. Surface soil —gravelly. 



b. Fine shingle, with lenticular beds of white sand. 



c. White sands — quartzose — horizontal bedding. 



d. Light greenish clay. 



e. White sand passing down into ochreous pebbly sands, with a few 



unworn blocks of flint and some ironstone bands and concretions. 

 No fossils were met with in these pits *. 



large 



* In another pit on the common, I found, in digging a few feet lower, a 

 sandy clay with very friable specimens of Tellina and Natica. 



