126 MR. W. BROCKBANK ON THE 



miles to the south of it, from Heaton Mersey to Goyt 

 Hall, beyond Stockport, which gave me the clue to the 

 solution of the new problem j and I have followed Mr. 

 Binney's views in the following communication. 



In making a sewer from Withington to Levenshulme, 

 the strata underlying the covering of Lower Boulder- clay 

 have been brought to light for about two miles, com- 

 mencing with the New Bed Sandstone and passing through 

 the Permian series of red clays, shales, and sandstones 

 until the Levenshulme limestone was reached. I do not 

 propose to enter much further into this part of the subject, 

 as Prof. Boyd Dawkins is engaged upon it. There is, 

 however, one point which falls within my province, as I 

 have taken pains to investigate it ; and this is, that from 

 Withington eastwards the strata appear to have been found 

 continuously, without any fault to disturb the sequence, 

 in the passage from the Triassic to the Permians, and down 

 to the Levenshulme limestone at Slade Lane. This is 

 roughly shown by a section prepared as the works pro- 

 gressed by Mr. Swarbrick, the Surveyor to the Withington 

 Local Board, to whom I am indebted for this and other 

 valuable information. The section now produced shows 

 red rocks and measures all the way, the surface varying 

 very considerably and being covered with from ten to 

 twenty feet of Lower Boulder-clay. The more immediate 

 subject of my paper is based upon the observations made 

 by Mr. Harper, the Surveyor of the Levenshulme Local 

 Board, who has kindly furnished me with a copy of his 

 working-plan and section, together with answers to many 

 queries I had submitted to him for this object. 



A sewer has been made under Mr. Harper's superin- 

 tendence, commencing in Levenshulme at the Manchester 

 and Stockport road, passing westwards under the L. & 

 N. W. Railway at Levenshulme Station, along Albert Road 



