468 PEOCEEDINGS OF THE GEOLOGICAL SOCIETY. 



nate fluviatile seams, and, in proceeding -westward, instead of an 

 occasional seam of Mytili or Myce or a few Littorinf^, we get fossili- 

 ferous beds so like the Norwicli Crag that they were always referred 



Fig. 38. — Section of the Westleton Beds on the side of Bunton Gap. 



feet. feet. 

 a. Valley-gravel. 



6. Boulder-clay 8 to 10 



5. Beds of light-coloured sand and flint- 

 shingle, with shells at X , and a 

 freshwater peaty bed at X X 12 to 15 



to that series. But Mr. Searles "Wood, jun., on palseontological evi- 

 dence, places them on a higher zone. The difference between Mr. 

 Wood and myself is, that I think the lowest beds " 2' " from Eunton 

 to Weyboume should be referred to the true Norwich Crag, whilst I 

 would refer the upper shell-beds " 5 " to the Westleton series, in- 

 stead of putting them all together, as I believe Mr. Wood does, into 

 one zone, higher than either of these *. At this part of their range 

 there is, with the exception of the presence of the more numer- 

 ous fossils, little difference in their character from that of the same 

 beds in the neighbourhood of Southwold, where the fossils are 

 rare and, with few exceptions, in the state of casts and impressions 

 onlyf. 



Taking a line from Weyboume to Norwich, the Westleton beds are 

 scantily exhibited over the Chillesford Clay at Burgh and Oxmead. 

 At Coltishall they are more fully developed and contain a subordinate 

 bed of iron-sandstone and clay-ochre, \\ ft. thick, which reposes 

 upon a slightly denuded surface of the Chillesford Clay. At Horstead 

 the Westleton shingle with crag- shells overlies the Chillesford Clay 

 {ante, p. 459). This is the shelly bed to which Mr. S. Wood, jun., has 

 applied the name of " Bure-Yalley Crag." It is seen agaiu at 

 Belaugh J, and still better at Wroxham. At the latter place there 

 are two pits, in one of which a thin bed of Norwich crag, with 

 numerous single valves of the Cyprina islandica, overlies the Chalk, 

 and underlies a thin bed of clay, representing, probably, the Chilles- 

 ford Clay, and in the other the same clay is overlain by a sandy crag 

 characterized by the presence of numerous Tdlina halihica. 



I have already {ante, p. 456) shown the relation of the typical 



* Quart. Journ. Geol. Soc. vol. rsii. pp. 547-549. The only other alternative 

 that I could admit is, that they all belong to the Westleton series. 



t I have one perfect valve of Tellina balthica from near Pakefield. 



X Freshwater shells again appear in these beds. I found, this autumn, in a pit 

 near the Anchor Inn, Coltishall, Limnma palustris associated with Tellina bal- 

 thica, My a arenaria, Cardium edule, Littorina litter ea, andCj/prina islandica. 



