670 ON AN ANCIENT BEACH AND BOULDERS NEAR BRATJNTON, ETC. 



might have been thrown up by the sea under existing conditions of 

 level, &c. Many boulders may be seen along the coast of North 

 Wales and Anglesey, washed out of drift and knocked about along 

 the coast for a considerable distance before they have the traces of 

 ice-grooving entirely rubbed out. 



On the whole, then, T would thus sum up the evidence : — 

 The ancient beach of Saunton Down and Croyde is not a raised 

 beach. The top is subaerial talus, the middle part blown sand, the 

 base only marine ; and the marine part is not above the reach of 

 the waves of the sea at its present level. 



The boulders of granite and felsite which occur at the base of the 

 ancient beach were transported to their present position by the 

 waves of the sea. Such as are of local origin could have reached 

 the sea by the ordinary process of denudation ; such as are possibly 

 of northern origin could have been carried down the Irish Channel 

 on bergs and been thrown up by the sea to where they would lie 

 at any period subsequent to their being transported south by ice, 

 but they do not in themselves imply any local glaciation. 



