378 MR. E. W. BINNEY ON CARBONIFEROUS, PERMIAN, AND 



An Account of the Strata in Croft Pit [continued). 



Middle 

 Coal- 

 measures 



{con- 

 tinued). 



Description of Strata. 



No. 



lOI. 



1 02. 

 103. 

 104. 



105. 

 106. 

 107. 



108. 



1 109. 



no. 



III. 



112. 

 113. 



114. 

 115. 



1x6. 



1,117. 



Brought forward 



Black slate 



Freestone, striated with blue slate 



Strong white freestone 



Freestone, mixed with blue state in tliin 



layers 



Strong white freestone 



Greyish slate, of a shivery nature 



Freestone, mixed with blue slate in thin 



layers 



Very strong white freestone 



Fine blue slate 



White freestone, striated with blue slate.. 



Fine blue slate 



White fi'eestone, striated with blue slate.. 

 Freestone, striated with blue slate in fine 



particles , 



Wliite freestone, in thin layers , 



White freestone, in thin layers, but more 



friable , 



Fine blue slate , 



Coal, 17th 



Thickness 



of eacli 



Stratum. 



ft. 



in. 



611 











5 



I 



4i 







4 



2 



4 







5 



6 







4 







5 



3 



2 



3 







7i 







4 



2 



I 







10 







4 







5 



2 



I 



7 



10 



647 II 



This section differs in several respects from that pre- 

 viously given, and as seen in the coast-section at Barrow- 

 mouth, especially in the omission of the bed of gypsum, 

 which evidently has been mistaken for limestone j and the 

 beds of limestone are more numerous and thicker inland 

 than on the coast, as is shown by the much greater thick- 

 ness of the limestone at Ben How to that at Barrow- 

 mouth. 



Ben How Section. 



Fault. 



At the Ben How Quarry, by the roadside leading from 

 Whitehaven to St. Bees, is a beautiful section of the mag- 



