104 PKOF. J. TEESTWICH ON THE RELATION OF THE 



of old stumps is often well exposed on the shore at low water; At 

 Bacton, where the Westleton Beds are distinct, the section is as 

 under (fig. 6). 



Pig. 6. — Section at Bacton Cliff. 



-s&i^ 1 



Mmif!^^ 







} 



..^vr-..^S^;r.-^vA^ ,..g 



feet. 



a. Sandy and gravelly soil 2 



h. Browu BoLdder-clay, with a few fragments of shells... 10 



c. Light yellow and white sands, contorted on top 5 



d. Pebbly shingle with a few shells (Westleton) 3 



e. A tangle of wood (local) 2 



/. Laminated grey clay and sand 4 



g. Fine grayel 1_{- 



Mr. Gunn informs me that the Porest Bed has been met with 

 about 8 feet lower. The shingle d contains * : — 



Littorina littorea. | Astarte borealis, 



rudis. My til us edulis. 



Purpura lapillus. | Cardium edule. 



Scalaria groenlaudica. | Trophon antiquus. 



Another feature that I had occasion to observe here during one 

 of my visits was a singular accumulation of twigs and branches of 

 trees (Pinus, Abies, Taxus, &c.), forming in one place a loose matted 

 mass from 2 to 3 feet thick, composed entirely of drifted wood 

 debris, very little altered except in colour (fig. 6, e). Between 

 Bacton and Muiidesley the shingle continues with little interruption, 

 and consists roughly of: — 



Per cent. 



Flint-pebbles 50 



White aud rose-ro!uured quartz-pebbles 20 



Subangular flints, not stained t 16 



Subangular fragments of chert and ragstone 8 



Lydian stone, jasper, quartzite, and sandstone pebbles... 6 



100 



* This shell-bed was discovered by the Eev. C. Green in 1842. 

 t I may have under-estimated here and in some of the other places the pro- 

 portion of subangular flints. 



