South-Western Part of Somersetshire, 361 



which are filled with a pulverulent carbonate of iimer It is very- 

 durable when used for building, and Watchet Pier has been repaired 

 with it. The Popple rock of Vellow extends as far as Yard farm, and 

 I observed it in the road near Qiiark-hill farm on the eastern side of 

 the brook. 



§ 26. At Lawford farm near Crowcombe there are some large 

 4uarries where different varieties of the derivative rocks may be 

 seen. The conglomerate, besides its usual component parts, is ac- 

 companied by patches of a green sandy clay, similar to that in the 

 quarries near Timberscombe, and I may remark here that these 

 green patches are prevalent in almost all the forms of conglo- 

 merate on the south and south-east slopes of the Ouantock hills. 



The conglomerate at Lawford farm is covered by several beds 

 of red sandstone, which are in general separated from each other by 

 a layer of rounded fragments of grauwacke mixed with red earth. 

 There are also several beds of conglomerate which are separated by 

 beds of sandstone, lying nearly horizontal : some of the sandstone 

 beds give more lime than any other in the quarry. This series of 

 beds extends for some distance towards Lydeard St. Lawrence by 

 Crowcombe Heathfield, and is succeeded near that town by red 

 sand. 



§ 27. A road is carried along the side of the Quantock hills 

 from Crowcombe to Bagborough by Triscombe. The derivative 

 rocks prevail all along this road, although it is at a very considerable 

 elevation : this is the greatest height at which I found them, ex- 

 cept in one place on the eastern slope of the Quantock hills, and 

 near the summit of the raiige^ at Quantock farm ; where in digging 

 a foundation there was found below the surface soil a conglomerate, 

 consisting of routided fragments of grauwacke cemented by a deep 

 red clay, forming a mass of extreme hardness. A short way south 



Vol. III. 2 z 



