418 EAISBD BEACHES. 



beach " is about 20 feet higher than in the foregoing section, 

 and much of the sand in these beds is composed of small plates 

 of clay-slate, as if crushed into fragments by ice, rather than 

 rounded by the action of water. I'his great variation of height 

 in the basement bed of some of the so-called Raised-beaches 

 appears to me to be conclusive evidence against their beach 

 origin. 



The Falmouth Eaised-beach is not horizontal, but it is 

 lowest at the narrow isthmus on which the hotel is built ; and 

 the patches of gravel in the holes of the cliffs westward are at 

 irregular elevations above the sea. 



The basement of the " Raised-beach " at Newquay rises 

 rapidly in elevation in the face of the cliff in its extension 

 southward. And yet more indicative is the basement form of 

 the "Raised-beach" (so-named on the Ordnance map) at 

 Godrevy near the N.E. corner of St. Ives Bay, where at the 

 lowest dip of the surface of the ground the " Beach" is as low 

 as the level of high-water, but as the land rises N. and S. 

 the basement of the "Raised-beach" rises with the surface 

 elevation. 



The famous "Raised-beach" in Croyde Bay, North Devon, 

 has been described by Sedgwick, Murchison, and De la Beche, 

 as such. In 1865, I inspected the whole shore lines of the bay, 

 from Baggy Point to Westward-ho, prepared sections of the 

 drift-beds on the cliffs at both ends of bay, described them in 

 detail, and expressed the opinion " that these " Raised-beaches '' 

 have been misnamed and hitherto misunderstood, — that they are 

 in fact patches of northern drift, and bear all the legitimate 

 marks of their origin."* 



This ' ' Raised-beach " has been lately examined by Professor 

 M'Kenny Hughes, M.A., Woodwardian Professor at Cambridge. 

 He comes to the conclusion that, "the ancient beach of Saunton 

 Down and Croyde is not a Raised-beach. The top is subserial 

 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."! 



*" Flint implements from drift not authentic," p. 12. 



f The " Quarterly Journal of the Geological Society," Nov. 1887, p. 670. 



