Miss E. Hodgson — On the Furness Limestone. 403 



uniform aroimcT the quarry, and are vertically jointed in the same 

 regular manner. Below this "rotten rock" (as the quarry -men term 

 it) the beds supply very good building stone. 



The three or foiu- localities where this moulded limestone has been 

 noticed vary considerably in elevation. The Tarn Close Quarry 

 (formerly the site of unsuccessful mining operations) is about 270 

 feet above the sea. The elevation of the limestone in the Lindale 

 Moor Iron Mines is about 350 feet ; in the railway cutting I believe 

 it is found between 175 and 200 feet ; and in the well-sinking 

 instance, as nearly as can be ascertained, it would be at an elevation 

 of 125 feet above the sea. These, but especially the Tarn Close 

 Quarry, all afford excellent evidence of moulded surfaces under deep 

 drift ; and they extend over an area of more than three miles. 



Tarn Close Quakuy in the Carboniferous Limestone, near Ulverstone. 



a. Moulded and indented limestone, originally capped with Boulder-clay 7-15 feet ia 



thickness. 

 6. " Rotten Eock" of the Quarry-men. 

 c. Compact limestone, suitable for bmlding-stone, 



Eetuming to the comparatively driftless ground of the Birkrigg 

 range, hundreds of these curiously moulded blocks occur, often within 

 two feet of the surface, and even less': they have been dug out for 

 many years past for rock-work. They are thinner here than those 

 figured, and have not such a deep indented profile. The best speci- 

 mens, the quari-y-men say, are those under the deepest cover of drift — 

 in these the sculpturing is carried quite through the stone, and thus, 

 what have once been immense unmanageable slabs, are foimd dis- 

 solved away into detached and convenient pieces, often presenting 

 fantastic forms of considerable beauty. They rest upon a bed of 

 "rotten rock" exactly as in the Tarn Close Quany, and like those 

 under the great drifts they are not confined to any particular 

 elevation. 



