68 



THE GEOLOGIST. 



a similar dip. These last-named strata were overlapped by the Trias, 

 which dips to the south-west at an angle of 12°. 



At Heaton Mersey the following section was met with: — 



Feet. 



Trias 45 



Permian — Red and varigated marls containing limestones 129 



Lower New Red Sandstone grooved 402 



576 



The Permian beds were cut off by a fault near the railway station at 

 Heaton ]N orris (first noticed by Mr. Hull, of the Geological Survey), which 

 brought in the Trias. This rock occupied the district between that town 

 and Goyt's HaU, in the Marple valley, where the lower part of the middle 

 coal-measures was seen in nearly a vertical position. 



The author considered Mr. Howard's sand delf to be a likely place 

 for ascertaining whether a coal-field worth working existed under the 

 town of Stockport. 



The next was a section made by Mr. John "Wood, at Medlock Yale, be- 

 tween Waterhouses, near Ashton-under-Lyne, and Manchester. It was 

 as follows : — 



Feet. In. 



Drift 26 0 



Trias 23 0 



Permian — Red marls, wdth beds of limestone and five beds of 



gypsum 246 3 



Lower New Red Sandstone 375 11 



Coal-measures about 90 0 



761 3 



AVhat these coal-measures were, whether above or under the Bradford 

 Four-feet Mine, it was at present impossible to say ; but it was to be 

 hoped that some mine would be met with to enable us to determine the 

 value of the great- tract of coal-measures lying between Ashton-under- 

 Lyne, Oldham, Middleton, and Manchester. Mr. Wood had done more 

 than any other gentleman to clear up this point, and it was to be desired 

 that he should meet with a good seam of coal, both for his own sake and 

 that of the public. 



The third section mentioned was at the sugar- works of Messrs. Fryer 

 and Co., in Chester Street, Chorlton-on-Medlock, Manchester. The fol- 

 lowing beds were there met with : — 



Feet. 



Trias 114 



Permian — Red marls with limestones 237 



Coarse red saiulstunc with jjebbles 45 



Coarse red siindstone 24 



Coal-measures, consist in-; oi' red shaly marls and limestones (Ard- 

 wick) ! ! 126 



546 



Tlio limestones in the last-named strata contained specimens of Micro- 

 coucJius c<n'houarius and scales of Pahrouisci'.s, which clearly proved them 

 to 1)0 similar beds to those of the up])or coal-field at Ardwick, to which 

 tlioy bear every resemblance in physical character. 



The occurrence of coal-measures on the south side of the city of Man- 

 chester is quite new and of great importance, showing that such strata at 



