Geology of Northumberland and Durham. 275 



Ft. In. 



Brought forward ... 9 8 



*Damp bed 6 



Thick blue stone ... 3 



Small bed above the villies ; 1 



*Damp 1 



First villie 2 



Second ditto 1 



Third ditto 1 



Tweddel'sbed 4 



*Damp 6 



Three dunny beds, 1 foot 4 inches each 4 



Three ditto 6 inches each I 6 



*Damp 8 



Crotlybed ... 1 2 



Curly 3 



Coarse bed * 1 3 



Three Leonard beds, 5 inches each ... 1 3 



Two true beds, 7 inches each ... 1 2 



Middle thick stone 2 6 



Yellow or sounding bed 8 



Moll Harrison ... 1 3 



Thick stone above the bottom I 3 



Cap above ditto 6 



Bottom stone 2 8 



Flag 4 



43 2 

 * Thickness of bad stone, not used, and damps 5 10 



Height of stone (or quarry) used for lime 37 4 



To the eastward of Blenkinsop, coal is worked at Halt- 

 whistle, Milkbridge, Barkham, Haydon Bridge, Fourstones, 

 opposite Warmley and Acomb or Fallowfield. These places 

 are all in the limestone country, and the coal is thought to be 

 the Blenkinsop seam, though reduced at Milkbridge to nineteen 

 inches in thickness, and at Barkham, at which place the shaft 

 is thirty fathoms and a half deep, from twenty to twenty-five 

 inches. At Hayton Bridge the seam is about twenty inches 

 thick, but at Fourstones it is as thick as at Blenkinsop. The 

 following rough account of the strata sunk through at Acomb 

 was obtained on the spot from an intelligent workman. 



2 N2 



