[To face p. 64^. 



itage E). 



fcaffordshire ; Lancashire in Stage E. Exceptional in 



E) ; Yorkshire (Stage B). 



'Bullion coal). 



Drdshire (Bay-coal bass). 



itone). 

 £ Dale, 

 tone). 

 bE). 



itone). 



-annister and Feather-edge coals). 



+ - 



