RAVENHEAD COLLECTION IN THE BROWN FREE LIBRARY AND MUSEUM. 395 



General Section of the Coal Measures. 



Prescot. 



Thickness. 



St Helens. 



Thickness. 



Wigan. 



Thickness. 





Ft. 



In. 





Ft. 



Iu. 





Ft. In. 









Lyon's Delf coal, 



2 



8 



Riding Mine coal, . 



3 8 



Strata, . 











Strata, 



47 



4 



Strata, 



36 



Felcroft coal,* . 



7 







London Delf coal, . 



2 



6 



Ince Yard Mine, 



2 6 



Strata, . 



96 







Strata, 



86 



2 



Strata, 



108 



Pastures coal, . 



4 



6 



Potatoe Delf coal,* . 



5 



3 



Ince Four- Feet coal, 



3 6 



Strata, . 



30 







Strata, 



41 



9 



Strata, 



150 9 



Discoverer coal* 



3 







Earthy Delf coal * . 



6 



2 



Ince Seven-Feet coal, 



6 



Strata, . 



57 







Strata, 



65 







) 





Yard Mine coal, 



3 



2 



Coal, 



2 







\ Strata, 



71 5 



Strata, . 



42 







Strata, 



53 







J 





Cannel Mine coal * . 



5 



9 



Coal* . 



6 



4 



Wilcock, or Furness 

 coal* 



4 7 



Strata, . 



75 







Strata, 



147 



8 



Strata, 



252 



Higher Bug coal, 



6 



6 



St Helens Main coal, 



Strata, 

 Cannel coal, . 



9 

 9 



2 





 

 3 



I Pemberton Five- 

 j* Feet Mine, 



5 2 



Strata, . 



6 







Strata, 



21 



3 



Strata, 



30 9 



Lower Bug coal, 



3 



6 



Four-Feet coal, 



3 



2 



Little coal, 



2 6 



Strata, . 



69 







Strata, 



56 







Strata, 



45 1 



Little End, or Cheshire 







Pigeon House coal, . 



2 







Pemberton Four- 





coal, 



2 



3 









Feet coal, 



4 6 



Strata, . 



252 







Strata, 



275 



7 



Strata, 



387 



r 







Ravenhead Higher 







"N 





Tenlands coal* . .< 



12 



6 



coal, 

 Strata, 



3 



4 



10 

 2 



1 Wigan Five - Feet 

 Mine, 



5 









Ravenhead Main 







<. 







Delf coal, 



7 







_> 





Strata, . 



80 







Strata, 



73 







Strata, 



90 



Bastion's coal * . 



4 







Bastion's coal,* 



4 



3 



Wigan Four - Feet 

 Mine, 



4 









( Strata, 



22 







Strata, 



72 



Strata, . 



100 







3 Higher Roger coal,* 

 \ Strata, 



6 

 123 



6 

 



Wigan Nine - Feet 

 Mine* . 

 ) 



9 



Sir John coal * . 



3 



4 



Sir John coal, . 



3 



4 



> Strata, 



280 



Strata, . 



50 







Strata. 



57 







J 





Prescot Main coal,* . 



10 







Flaggy Delf coal, 



4 



8 



Cannel and King 

 coals* 



6 









Strata, 



78 







Strata, 



66 









Lower Roger coal ,* . 



5 



3 



Ravin Mine* . 

 Strata, 



3 

 168 



Strata, . 



240 







Strata, 



333 



8 



Haigh Yard coal, . 



Strata, 

 Bone coal, 



Strata, 



3 

 150 



2 3 



7 8 



Rushy Park coal, 



5 







Rushy Park coal, 



4 



6 



Orrell Five-Feet coal, 



3 6 



Strata, . 



150 







Strata, 



162 







Strata, 



186 



Little Delf coal, 



3 







Little Delf coal, 



3 







Arley Mine, Orrell 

 Four-Feet, 



4 



1320 



6 



1739 



3 



2172 10 



* Contain beds of shale, or coal of inferior quality. Coal seams under 2 feet in thickness are omitted, not being 

 worth working. 



