138 GEOLOGY OF ARRAN. 



originally nearly half a mile each. The detritus backs 

 against the sides of the sloping hill all around, and is seen to 

 rest against the natural rock, fronting the sea, outside the 

 bay, at the same level with it, and worn like it into the 

 existing cliff. This effect is especially remarkable on the 

 west side. Here the slate, the old red sandstone, and the 

 detritus form, in succession towards the east, the front of a 

 cliff, at first of nearly uniform height, and then gradually 

 declining eastwards, all the three portions presenting exactly 

 the same evidence of sea action. They form, in fact, an un- 

 broken line of old sea cliff, carved out on all three alike 

 when the land was rising, in the manner already pointed out 

 (Arts. 18-20). If the terrace existed before, and the 

 moraine was thrown down upon it, then there had been an 

 earlier wearing of the rocky front, the evidence of which 

 should still exist at the back of the detrital mass, and also 

 under it on the floor of the terrace. Boulder clays, we know, 

 are in some of the glens accumulated against a rocky face 

 worn earlier, and scratched rocks are seen xipon the floor of 

 the terrace. 



The contact of the slate and sandstone is not seen in the 

 cliff's, nor on the terrace in front, where worn masses of 

 slate in front of the slate cliff, and of sandstone in front of 

 the other two portions, all in situ, rise up through the 

 shingle. The foundation rock all round eastwards by the 

 lodge and east side of the bay is sandstone. The detritus 

 was cut into the existing forms, by the joint action of the 

 sea and river ; the mounds present in front rounded promon- 

 tories and semi-circular bays, and on the ascent terraces at 

 several successive heights. An isolated mound in front of 

 the lodge was removed in order to open up the view east- 

 wards. Among the detritus there are beds of fine sand, 

 much sought after by gardeners, and often carried to the 

 mainland. 



There is no hotel in this part of the island, but very com- 

 fortable quarters can be had at a farm house in the hamlet of 



