vol. xx. (3) THE SILURIAN ROCKS OF MAY HILL 
193 
hand specimen and in a microscope section that a somewhat 
similar ashy grit is found at Downhead. The andesitic frag- 
ments in this rock are, it is true, more numerous than in the 
Huntley Quarry rock and the dolerite fragments absent, but 
the rock is of the same general type. The third argument, that 
the position of the Huntley Quarry proves the beds in it to be 
the lowest beds seen in the May Hill area, is not borne out by 
detailed mapping. 
As already mentioned, 1 the Silurian beds forming May Hill 
itself are arranged in an anticline, but this anticline ends to 
the south against a more or less east and west fault, the Rock 
Farm Fault, and the Silurian beds to the south of this which run 
through Huntley Hill are not arranged in such a simple fold. 
It is true that the Huntley Quarry is situated at the extreme 
east of the Silurian rocks, and may be in the lowest beds to be 
seen, but there is no proof of this. About the arrangement of 
the rocks round it, it is impossible to be certain. 
There is certainly no evidence of a strip of Huntley Quarry 
beds running along the eastern edge of the typical Llandovery 
Sandstone. To the north of the quarry the ground for about 
200 yards contains fragments of rock similar to that found in 
the quarry, then farther on fragments of coarse Llandovery 
Sandstone, and then to the west of the summit of Bright’s Hill 
fragments of the fine Llandovery Sandstone. The coarse 
sandstone of Llandovery age is to be seen to the west of the 
Huntley Quarry, 300 yards away, while Dr. Callaway found it 
also 200 yards to the south-west. 
To the south of it comes Huntley Hill and Broomhill Wood. 
The hill has numerous exposures of coarse Llandovery Sandstone, 
and fragments of similar rock are scattered through the wood. 
The dip of the Llandovery rock is 22 0 west-north-west to the 
west, 70° south-west to the south-west, and 28° south-west to 
the south. 
Thus the Huntley Quarry beds may lie with the coarse 
Llandovery rock dipping off them, but there may be faults, 
and in any case it is impossible to state with confidence that 
> they are the lowest beds seen in the May Hill area. 
1 Vide p. 191. 
