THE CARBONIFEROUS PERIOD. 



161 



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

 that the remains of plants are found solely in the Coal- 



GENERALISED SECTION OF THE CARBONIFEROUS STRATA 

 OF THE NORTH OF ENGLAND. 



Fig. 107. 



li 



wU 



8 



Permian (New Red Sand- 

 stone). 



- Coal-measures. 



Millstone Grit. 



Yoredale Series. 



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- 



