280 Scientific Proceedings, Royal Dublin Society. 



The sandstone of the beach rests on a deeply furrowed rock- 

 platform, which has been described previously (see p. 257, and 

 Plate XXVI.). 



A little beyond this point, more than 3 feet of loose sand, with 

 lenticular ferricrete layers, is seen in the cliffs. It is a blown sand 

 resting on the beach-deposits, and lying beneath the head. A 

 few yards further east, near a small cove, the ferricrete sand 

 resting on the platform is over 7 feet thick, and contains bands of 

 pebbles. The platform is here also channelled by deep north and 

 south furrows, and was estimated to be 10 feet above high- water 

 mark of ordinary tide. 



In the small cove, the platform is seen further back nearer the 

 old cliff ; it is 2 to 3 feet higher. 



From this cove to the headland, where the stream reaches the 

 sea, the platform is overlaid by head and boulder-clay. 



In the bay, east of the headland, the slates have been planed to 

 a low level on the shore. Their surface slopes very gently upwards 

 from low- water mark, and is furrowed from north to south in the 

 same manner as the raised-shore platform is. Near the east end 

 of the bay, a relic of the pre-glacial platform is preserved at the 

 foot of the cliff. The cliff-face above the platform is water-worn 

 at its base. The inner angle of the platform is 10 feet above the 

 corresponding angle on the modern shore. 



About half a mile to the eastwards, where a road leads down 

 the cliff, there is a very fine exposure of the boulder-clay resting 

 on the beach-deposits. A description of this section has already 

 been given (see p. 255, and Plate XXIV.). 



Old Head ofKinsale. — In the bay, behind the lighthouse at the 

 extreme end of the Old Head, the following section is seen : — 



Feet. 

 Boulder-clay, . , . . . . 20-30 



Head, . . . . . . . . 10 



Gravelly layer, with larger blocks, . . 0-1 



The gravel is composed of the local sandy green slates, and the 

 pebbles are not well rounded, but the modern beach shows that 

 the green slate does not form well-rounded, smooth pebbles. The 

 degree of rounding shown in the two cases is the same. 



The boulder-clay is of a greenish colour, and contains numerous 



