DISTRIBUTION, 



159 



6. Lancashire Coal-field — Wigan. 



Hiding Mine 



I nee Yard Mine 



Ince -1-foot Mine 



Ince 7-foot Mine 



Furnace Coal 



Peruberton 5-foot Mine 



Little Coal 



Pemberton 4-foot Mine 



Wigan 5-foot 



Wigan 4-foot 



Wigan 9-foot 



Cannel 



King Coal 



Ravin Mine 



Haigh Yard Coal 



Bone Coal 

 Srnitt or Orrell 5-foot 

 Arley or Orrell 4-foot 



Gannister Beds 



Upper Mountain Mine 



Coal of Upholland 



Bullion Coal 



Gannister Coal 



5-foot Coal 



(Lower Mountain Mine 

 Lower foot Coal 

 Rough Rock 



Carbonicola. 



With Schizodus at Hulton. 



With Carbonicola robusta and C. acuta. 



With Carbonicola robttsta. 

 Naiadites modiolaris. 



With Carbonicola robusta, 



Carbonicola robusta thirty yards below the Arley Mine. 



With marine Mollusca. 



With Carbonicola aquilina and C. nucularis. 



Carbonicola acuta, C. aquilina, C. robusta, at Rishton Colliery. 



7. Detailed Section op Shell-Beds* below the Lower-Mountain Mine of Rushton 

 Colliery, near Blackburn. Furnished by Wm. Pickup, Esq. 



■ Lower Mountain Mine. 



Lower Foot Coal. 



^ c, o ^ r/c-i r"r> o-^rvo o »« Black shales with Carbonicola aquilina 

 : . s • ori„ o.o c/ c c aiMO'o <* | and c acuta (dwarf). 



? o o o o O aooooooo 



> o C O OOQ,idOOOOOL 



•cooo DOOOo 



o O O ° c ° v v v 



Black shale with Carbonicola robusta 

 above. 



Carbonicola aquilina at bottom. 



Shale Bed Coal. 



* Of course these beds lie at a considerable inclination to the horizon. 



