Correspondence, 



187 



dently drifted wood, and thin pieces of soft slate. Upon the inclined 

 strata rest two beds — an npper one of broken Sandstone, and a 

 lower one of Yellow and Purple Sands, but these are probably of 

 Grlacial age. 



Fig. 3. — Quakry at Shaw Mills. 

 1. Soil, 2. Broken sandstone. 3. Yellow and purple sands. 4. Red grit. 



Near Fountain's Hall a quarry, which was opened a few years 

 ago, exhibits the same flaggy Grits, lying upon the rough Grit, but 

 separated by a thin sheet of Calcareous Spar. Interposed between 

 the beds of this Grit is a coarse Eed Sand, some portions of which 

 are gathered into separate masses, and curiously surrounded with 

 sheets of Spar. A few yards to the west of this quarry the Mag- 

 nesian Limestone rests unconformably upon the Grit. 



Fig. 4. — Fountain's Hall Quarry. 

 1. Drift grayel. 2. Flaggy grits. 3. Sheet of calcareous spar. 



5. Eed sands. 



4. Eed grit. 



A considerable acquaintance with these and other quarries of the 

 same Sandstone in this district, leaves very little doubt in my mind 

 that the Eed Grit lies perfectly conformable to the lighter-coloured 

 and harder Grits below, and passes insensibly into them. 



Between the Grit and the arenaceous flags mentioned by Mr. 

 Binney, there occurs a highly fossiliferous bed, of three members, 

 which seems to extend to a considerable distance both south and 

 west. The upper bed consists of thin flags, abounding in the 



