232 PROCEEDINGS OF THE COTTESWOLD CLUB 



The meres are stated to owe their origin to two causes, 

 some to the one and some to the other. One cause is 

 the dissolution by springs of the sah in the Trias strata : 

 as a resuh a subsidence occurs. The other cause is 

 Glacial action, which produced hollows in the drift. 



Of Glacial action I obtained good evidence in a section 

 of drift near a small stream by Mobberley, which is not 

 far from Knutsford.'^' I brought away some well-scratched 

 stones from a deposit of boulders and gravel embedded in 

 a reddish clay. The scratches are very definite, and the 

 whole surface of the stones has undergone much attrition. 

 But something has happened to the stones since the 

 wearing processes were in action, and before the time of 

 embedding in the clay. Certain pieces have been broken 

 off, leaving rough surfaces. They do not seem to have 

 been knocked off by blows, and it is difficult to suggest 

 what the agency has been. 



From the position of this drift near the stream, certain 

 inferences may be drawn. The denudation of the plain 

 of Cheshire had been accomplished before the deposition 

 of this drift. The somewhat shallow valley of the stream 

 has been cut out subsequently. 



Drift of another character, presumably formed of 

 materials, removed by a stream during valley excavation, 

 ])artly through drift, partly through Trias rocks, and 

 redeposited as river gravel, was found in another section 

 not far distant. Here I did not obtain any evidence of 

 ice-action, though I cannot say the search was prolonged 

 or exhaustive. But the interest of this gravel section was 

 the finding of rounded pebbles by the side of sub-angular 

 rock fragments, which had only their edges abraded. The 



* Other Glacial evidence at Mobberly was furnished by large boulders bv the road- 

 sides. To one of these was attached a legend about a white lady who sits thereon and 

 combs her hair. Dire consequences were to overtake anyone daring enough to attempt 

 to move the stone. 



