460 



PEOCEEDINGS OF THE GEOLOGICAL SOCIETX". 



rises at the base of tlio cliflF, and is overlain by 3 feet of laminated 

 clays with imperfect impressions of plants and traces of shells. 



The crag may be traced more or less well at the base of the 

 cliff thence to Sherringham. Here it assumes larger proportions. 

 On one occasion (in 1856) I found several undeterminable bones 

 in the iron pan (crag) lying on the chalk, but no shells ; forty 

 yards further west the crag becomes more sandy, and contains 

 shells. The following is a section taken at the base of this cliff : — 



Pig. 30. — Lower part of Cliff west of SherringJiam. 



II n ITJDT^ t^-Ftt-ii . — TT- cnaiK. 



6. Boulder-clay (base of). feet. 



5. White sand and flint-shingle, with a subordinate bed of laminated clay , 



(x) and a few shells in lower bed (xx) 12 to 14 



3. Grey clay, with fragments of wood (Chillesford Clay) 3 to 4 



2'. Iron sandstone (pan) with a few shells, overlain at x' by 6 inches of 



sand with numerous shells, including TelUjia balthica ' 1 to Ig 



The pebbly sands (5) continue more or less shelly all the way to 

 Weybourne ; and in places near Weybourne the surface of the 

 chalk under the crag has been pierced by Annelids and by the 

 Pholas crisjpata, whilst pebbles of chalk bored by Saoslcava rugosa 

 are met with in the overlying craggy beds. These lower beds, which 

 Mr. Jeffreys has examined with me, contain the following shells col- 

 lected on the occasion of several visits : — 



Cardium edule. Pholas crispata. 



groenlandicum ? Saxicava rugosa. 



Cyprina islandica. Venus fasciata. 



Astarte compressa. t. ■ i i 



borealis. g"f '7^"^ undatum. 



Myaarenaria. - Hehx hispida. 



Leda lanceolata. tittorma rudis. 



Mactra subtruncata. TTT ^ittorea. 



Nucula Cobboldiffi. 2 '''' ^^-^1^°°^^ «• 



TelHna balthica. Purpiu-a lapiUus. 



lata. Balanus crenatus. 



obliqua. Bones and vertebrae of fish. 



Above these shelly sands the bed of clay (3), which I would 

 refer to the Chillesford Clay, can be traced with few interruptions. 

 It is not fossiliferous. Sometimes (as just west of Sherringham) the 

 sand and shingle (5) have worn down and denuded this clay, and then 

 in its place we often find a reconstructed bed, consisting of a base 



