THE CARBONIFEROUS PERIOD. 



161 



daily undergoing increase. It is not to be supposed, however, 

 that the remains of plants are found solely in the CoaU 



GENERALISED SECTION OF THE CARBONIFEROUS STRATA 

 OF THE NORTH OF ENGLAND. 



I* 



en O 



W aS 



S 



^S 



Permian (New Red Sand- 

 stone). 



> Coal-measures. 



Millstone Grit. 



Yoredale Senes. 



Scar- Limestone Series. 



Basement Beds (Conglom- 

 erates and Sandstones). 



measures ; for though most abundant towards the summit, 

 they are found in less numbers in all parts of the series. 

 Wherever found, they belong to the same great types of vege- 



