PROCEEDINGS OE THE COTTESWOLD CLUB 227 



side to that on the other shows that the amount of 

 excavated matciial removed by denudation has been 

 enormous. 



In the afternoon we continued our journey — the 

 destination Buildwas, about 25 miles distant. For the 

 first part of our journey we purposely travelled along the 

 Watling Street into Craven Arms. Thence our road 

 seemed to be a constant succession of inclines for miles, 

 till we reached the edge of the Severn valley, above Much 

 Wenlock, when descent was rapid. 



On the right, as we journeyed. Glee Hill stood out as a 

 fine object, interesting to all cyclists as the source of the 

 best roadstone. It is a fine example of the resistance 

 which a hard rock, such as this basalt, offers to denuda- 

 tion. The geological history of this hill was ably 

 sketched by the late Prof. Marker on the occasion of the 

 Club's visit.* 



Above Much Wenlock I observed pebbles, similar to 

 what we know in this district as northern drift, heaped up 

 by the roadside for use as road metal. I should like to 

 have extended this observation, for there is little doubt 

 that the pebbles are obtained from local deposits. In 

 that case these deposits would be a continuation of the 

 drift spread over the Cheshire Plain and the high ground 

 north of the Severn, which would indicate that the Severn 

 has cut the gorge at Coalbrookdale since the deposition 

 of this northern drift debris. f 



We know in our own district that very much denuda- 

 tion has been accomplished in the Severn valley since this 

 drift was deposited. For the drift occupies the tops of 

 hills in the Severn valley ; and at Sedbury Park, near 



* Proc, vol. xi., p. 239, 1895. 



+ At Ironbridge, near Coalbrookdale, tlie drift is 200 feet thick — H. 15. Woodward, 

 Geology of England and Wales,' and Ed., p. 492. 



