[ 200 ] 



XXXVIII. Contributions to the Geology of 'Northumberland 

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



[Continued from p. 99.] 



An Account of Strata sunk through in the Blossom Pit, Hetton 

 Colliery, begun December 19, 1820, Durham. 



F. Y. F. I. 



Outset above the surface 



Soil 



Sand 



Gravel 



Limestone marl and soft limestone ... . 

 Limestone of various kinds, and the water 



increased gradually, from about the depth 



of 16 fathoms (where the machine began 



to pump,) to the bottom of it, to nearly 



2000 gallons per minute ,* viz. 



Yellow limestone in different beds 



Blue ditto and flaggy near the 



bottom (called blue rag) 



Blue metal 



Sandstone when broken into was drawn by ) 



the pumps / 



White metal stone, very soft 



Gray seamy metal stone ... 



Strong brown limestone mixed with whin ... 

 Blue gray metal mixed with water and ) 



very soft ... 

 Coal mixed with black metal 



Gray metal stone 



Blue metal 



Coal mixed with black metal 



Gray metal stone and water ... 



Section of the 4-feet Coal Seam. 



Coal 0*- l^O" 



Gray metal 4 



Black ditto with coal 7 



Coal 1 10 



Gray metal stone or thill 



Gray ditto with partings ... 



Strong white post, and water in it, near the 1 



bottom, and spongy J 



Three-quarter coal seam and water in it 



Gray metal stone or thill , 



White post 



Gray metal 



White post with partings and water 



Carried forward 



2 1 2 10 



10 9 



1 4 

 10 



1 



2 



1 



2 



2 



1 



8 10 5 



38 1 1 4 



I 5 



3 10 7 



2 



521 2 6 



