Geol.Ma.^. 1871. 



^ol.YIIl. Pl.Y 



■•.'A\-'-'.> 



Mill 







Chaxice Penny stctrie. 



Fungous and Gur Coal. 



Top Coal loYccri Coal. ' ' 



Big llmt Coal, Pennystone, and S-ulplrar Coal. 



IBesLRaiidle CLod and Little riint, 



-f- 4- 



G-TtDe1A5iae ddetliih.. '. ' ■ T>r-f i^"^- — ' 



JMinteraJBro! imp. 



CoallDrook-dAlfi Coalfield, Slaowinig tiie denudalio^n of the 

 Coal Measures. 



