F. W. HARMER ON THE KESSINGLAND CLIFF-SECTION. 



137 



The bed No. 4 is the Middle 

 Glacial sand with fine shingle 

 bands, which is generally present 

 in the district. It rests upon 

 the nearly horizontal surface of 

 the beds Nos. 1, 2, and 3, from 

 end to end of the section, except 

 in one place near the Pakefield- 

 Lighthouse gorge, where it cuts 

 through No. 1 to the beach-line 

 for the space of a few yards. 

 For the greater part of the dis- 

 tance from Kessingland to the 

 Lighthouse gorge the Middle 

 Glacial sands No. 4 are overlain 

 by the chalky Boulder- clay of 

 East Anglia (or Upper Glacial), 

 No. 5, which here presents its 

 usual features. 



I am thus altogether at a loss 

 to discover that sequence of beds 

 which Mr. Gunn has recently 

 described. The marine shells 

 and cetacean bones mentioned, in 

 the section given by him, as oc- 

 curring in the Chillesford Clay 

 have never yet been found in 

 that bed in the Kessingland cliff ; 

 and I know of no evidence what- 

 ever to justify him in the asser- 

 tion that the Norwich Crag, with 

 its marine and freshwater shells, 

 is there represented. No marine 

 mollusca, so far as I know, have 

 ever been found there at all. 



So far also from proving that 

 the Forest-bed is older than the 

 Crag, the evidence of this section 

 appears to me to point the other 

 way. It would seem that the 

 mammaliferous mottled clay, No. 

 2, was deposited either by a 

 river or a lake whose northern 

 bank, at least, was formed by 

 the Chillesford Clay exposed at 

 the Lighthouse gorge at the 

 Pakefield end of the section, that 

 this mammaliferous clay after- 

 wards became sufficiently dry to 

 allow it to be covered with vegcta- 



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