Vol. 54.] 



OF THE BA.GSHOT DISTRICT. 



185 



Since I wrote the above-meutioned paper, I have examined the 

 stones on various modern beaches, and have noticed that stones of 

 whatever shape soon become rolled to pebbles on a sea-beach. I 

 may mention the beach of Pecamp in JN^ormandy. The clitis there 

 are lofty, they are composed of Chalk with a great deal of flint, 

 and yet angular flints are quite rare on the beach. 'Now, the gravels 

 of the district with which I am dealing are largely composed of 

 flints, Avhich, though they show signs of the action of water, are 

 far more angular and irregular in shape than those of the sea- 

 beaches which I have examined. Some of the flints, indeed, 

 show so little sign of wear that I am tempted to doubt whether 

 they could have been transported to their present position without 

 the aid of ice. 



Fig. 1. — Easthampstead Plain, Gravel Hill: sai^sen with rootlet- 

 tubes; large Jiints very little rolled or ivaterworn. 



[Level : 400 feet above Ordnance datum.] 



Large nnwaterworn or very little water worn flints occur in 

 the gravel at Shoppenhangers Farm, Maidenhead, 110 feet above 

 Ordnance datum ; at the Hockett, Cookham Dene, 351 feet above 

 Ordnance datum ; at Caversham, and other localities. But there is 

 Chalk at the present surface of the ground in close proximity to 

 these places, and the flints may have travelled only a short distance. 



This cannot be said, however, of the flints found in the gravel 

 of Easthampstead Plain, 400 feet above Ordnance datum ; and I have 

 a photograph (fig. 1) showing six large flints which have certainly 



