of clackmananshirJ:. 487 



6°, or nearly" 1 in 9; farther a dipping, the 

 angle is io°, or nearly 1 in 6. 



The strata which are found alternating with the 

 coal in the three fields, are, 



Red- coloured sandstone, from friable to very 

 hard. 



Common sandstone, dark-grey colour to nearly 

 a pure white ; from a soft and friable state to very 

 hard. 



Dark-coloured varieties of slate-clay, 

 Varieties of red-coloured slate-clay* 

 Bands and balls of clav-ironstone. 

 Bituminous shale, comparatively in small pro- 

 portion. 



The workable seams of coal found in the North 

 Field are as follows : 







Yds. 



Ft. 



In, 





To the first coal is in depth 



22 



0 



O 



A. 



A coal, 



0 





O 





Various strata, 



18 



0 



0 



B. 



A coal, 



O 



1 



6 





Various strata, 



12 



c 



0 



C. 



A coal, 



O 



3 



0 





Various strata, 



22 



0 



0 



D. 



A coal, 



O 





0 





Various strata, 



9 



0 



0 



E. 



A coal, 



0 



5 



0 





Various strata, 



9 



0 



p 



. F. 



A coal, 



0 



4 



0 



H h 4 



