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A is the top of the higher Ancient Beach, which is 40^ feet ahove the present 

 high water of spring-tides at C 



B is the top of the lower Ancient Beach, which is 25.8 feet above the present high- 

 water of spring tides at C. 



The dimensions in the section are given in feet and decimals. 



I have but little time to speculate on the subject of these 

 beaches, and I shall therefore only trouble you with a few 

 observations which occurred to me on the spot. The upper 

 beach is terminated at both ends by the hill country of the 

 Boss, and is also, in its middle, broken by a round hillock 

 which on one side appears to be rising out of the level plain 

 which forms the top of the beach. Upon digging, I found the 

 game species of boulders as those which lie on the present 

 shore, and they were only covered with a thin but tough coat 

 of mossy grass, which the spade penetrated with difficulty. 



The lower beach has much more marked features than the 

 upper one ; and its appearance is such as can hardly fail to 

 strike the most careless observer. It has somewhat the look 

 of an artificial mound, the ground being lower at the back of 

 it than at its face or crest. Two projecting tongues, in which 

 the adjoining lines of the beach unite, are very remark- 

 able, and are obviously produced by the action of the waves 

 from the sides of two small bays opposite each other, and an 

 inlet between them, at each of which the face of the beach 

 is concave. This beach is also composed of boulders, which, 

 however, appear more rounded than those of the other beach, 

 or indeed than those which compose the present shore. This 

 may arise from the stones having been longer exposed to the 

 action of the sea before being raised to their present level. 

 The contour of both these beaches, but more especially that of 

 the lower one, is characterized by the slightly concave form 

 which distinguishes sea-beaches composed of gravel and sand ; 

 and I have not the least doubt that these ridges are of marine 

 origin, while their position, in an almost land-locked bay, ren- 

 ders it highly improbable that the accmmtdation of gravel could 



