[ 92 ] 



XVII. Contributions to the Geology of Northumberland and 

 Durham. By N. J. Winch, Esq. F.G.S. $ A.L.S. 



[Concluded from p. 35.] 



An Account of the different Strata sunk 

 ■ Pit, Seghill Colliery, Northumberland 

 Feet, and Inches. 



Outset 

 Blue clay... 

 Post girdles 

 Blue metal . 

 Coal ... 



... High main coal ... 



Blue metal 



Coal 



Gray metal 



Blue metal 



Coal 



Gray metal 



Post mixed with whin : got a great quan- 

 tity of water in this stone 



Coal 



Dark -gray metal 1 ^ , 



coai.! 3 . y ) Gre y s 



s seam 



Blue metal or thill 



Coal 



Blue metal 



Post girdle 



Gray metal , 



Post 



Gray metal , 



Whin girdles , 



Gray metal 



Black stone 



Coal 



Gray metal mixed with girdles 



Coal Hartley- Yard coal 



Gray metal 



Blue metal 



Post girdles 



Blue metal with thin post girdles 



White post with partings and water 



Foul slaty coal ") 



Coarse do I Hartley 



Gray and black metal \ stone coal 



Coal J 



through in the Engine 

 : in Fathoms, Yards, 



F. Y. F. I. 



17 l 



1 3 



5 



2 6 



1 2 



2 11 



1 9 

 2 4 

 2 



4 



1 1 3 



5 



1 8 

 2 10J 



1 1 9 



1 1 6 



6 



1 1 7 

 1 4 

 11 

 1 8 

 1 11 

 1 3 



19 fl 0) 



10 1 2 10| 



12 1 5 



60 4 



Seghill Colliery is six miles to the north-east of Newcastle, 

 and the value of its section is to show the difference between 



