420 RAISED BEACHES. 



such, as occurs at the junction of the granite with the killas ; 

 also various granitoid rocks, and pieces of limestone. 



3. Limestone rubble and clay, with patches of white and 

 red siliceous sand, the grains of which under the microscope 

 appeared rounded and water- worn. 



The whole resting on the upturned edges of the Devonian 

 limestone. And I traced the trail of these beds for a consider- 

 able distance down the slope of the hUl towards the coast line. 



In June, 1887, I was fortunate enough to visit the Hoe, 

 when a large and interesting section of the same beds was laid 

 open by the excavation for a new road up the slope of the 

 eastern side of the Hoe, to the crest of the ground, which I 

 carefully inspected, and after two further visits as the works 

 progressed I prepared the section of these deposits, which I now 

 exhibit. 



It will be observed that there is no horizontal bedding of 

 the diluvial gravel, but that it lies in patches, on the upturned 

 broken edges of the limestone beds ; and into the cavities and 

 fissures of the limestone to an unseen depth ; it was further 

 exposed at its southern end by a pit about four feet below the 

 surface of the newly- formed road. The face of the section of 

 the gravel and clay strongly indicated a torrential action, large 

 and small pebbles mixed with sand and finely pulverised clay 

 had been carried on together, and in some parts th.e mass 

 appears to have been a contorted semifluid slush. A continua- 

 tion of this bed down the slopes to the then sea-shore below 

 must have existed, whether as a raised beach or otherwise. It 

 is, however, as a "raised-beach" thus described by Dr. Moore. 

 He says — " It was ascertained to occupy a depression in the face of 

 the limestone cliff a hundred feet wide and forty feet deep ; its 

 base is thirty-five feet above the present sea at high water spring 

 tides ; it runs upwards and backwards twenty feet inclining 

 inwards with the slope of the rock, and is covered by ten feet of 

 gravel, thus making its entire elevation sixty -five feet above the 

 present sea-level. It is composed of fragments of rock of the 

 neighbouring shore, such as limestone-slate, and red sandstone, 

 and reddish porphyry, together with quantities of granite sand, 

 wbich is arranged in consolidated horizontal layers or false 



