24 



line of the bed east of the latter place, but are exactly on a line 

 with the strike of the bed beyond Coniston ; a great fault between 

 Low House and Grey&tone House being counterbalanced by the 

 whole of the smaller faults between that spot and Coniston, which 

 are pointed out in Professor Sedgwick's memoir. Mr. Sharpe gives 

 a list of fossils collected in this bed and the shales above it at Torver 

 Fell, Coniston, Long Sleddale, &c., in which are several of the spe- 

 cies of Orthis, Spirifer, and Leptcena, found by Mr. Murchison in 

 the Lower Silurian deposits, and several undescribed species. 



2nd. Slates, Shales, and Flagsto7ies. — ^These are well exposed on 

 Torver Fell, where the following series may be seen: — 



a. Brown shale. 



b. Dark blue slate of good quality ; the beds dip E.S.E. 40°, and 

 the cleavage dips S.S.E. 80°; it contains many fossils, much com- 

 pressed and distorted, nevertheless a few Lower Silurian shells are 

 made out. 



c. Indurated brown shale, 



d. Blue flagstone rock, a bed well known in the district, and 

 mentioned by Professor Sedgwick and Mr. Marshall ; at Torver, 

 where it gives good roofing-slate as well as flags, the beds dip 

 south-east 45°, and the cleavage south-east 80°. To the eastward 

 of Windermere this bed and the lower bed of slate b run together, 

 and the whole of the Lower Silurian formation diminishes in thick- 

 ness. 



e. Indurated shale. 



/. Shear Bed, which supplies brownish- blue flags, taken along the 

 bedding of the rocks, which is free from slaty cleavage. 



This series of slates, flagstones, and shales, may be traced above 

 the Coniston limestone from the Dudden to Sliap Fells, although 

 the separate beds cannot always be distinguished. 



3rd. Grey Slaty Grits, described in Mr. Sharpe's former paper 

 as the " Lower division of the Windermere rocks," but now classed 

 as ])art of the Lower Silurian formation ; they consist of a great 

 thickness of hard gritty grauwacke, variously aff^ected by cleavage, 

 and may be traced from the Dudden, below Broughton, to Shap 

 Fell. 



4th; Blawith Limestone, " the second band of calcareous slate " 

 of Professor Sedgwick ; a bed only found in two localities, at Meer 

 Beck and a wood behind Low Hall, on the east of the road from 

 Ireleth to Kirkby Ireleth, where it is a dark-blue limestone very 

 like that of Coniston, dipping east 40°, of which only about a thick- 

 ness of twelve feet is laid open ; and at Turtle-bank Heights, south- 

 west of Blawith, where it has been quarried near the top of the 

 south-east face of the hill, and is a dark gray limestone, twenty feet 

 thick, striking north-east and dipping perpendicularly; from this 

 spot it runs by Cockin's-hill to the side of Coniston Water, half a 

 mile north of Water Gate. The fossils found by Mr. Marshall in 

 this bed near Blawith were identified as Lower Silurian species. 



5th. Flagstones and Slates of Kirkby Ireleth. — These are placed 

 by Professor Sedgwick below the Blawith limestone, No. 4, but 



