TRIASSIC STRATA OF CUMBERLAND AND DUMFRIES. 373 



ledge extends^ it has not yet been found at a distance from 

 profitable coal-fields. It is absent in all the Permian sec- 

 tions that I have seen in Yorkshire, Westmoreland, and 

 Cumberland, from Westhonse to Penton and Canobie. 



The section of Barrowmouth now claims our attention. 

 When this interesting coast-section was visited by me 

 many years ago, my chief attention was directed to the 

 magnesian limestone and the red marls ; and the magni- 

 ficent rock of Upper Permian sandstone above, or the thick 

 lower or Whitehaven sandstone underneath, did not claim 

 much of my observation, my object then being chiefly to 

 draw attention to the magnesian limestone and the un- 

 derlying conglomerate. 



The following is a general section of the Permian strata 

 as exposed in the cliff-section, and their estimated thick- 

 nesses in a descending order : — 



ft. in. 



1. Fine-grained red sandstone, laminated and ripple- 



marked, same as that seen at Moat, Cove, Shawk, 

 Westward, Maryport, and other places, which 

 may be conveniently called St. Bees sandstone, 



fully looo o 



2. Red shaly marls 30 o 



3 . Red marls, containing granular gypsum 29 i 



4.*Magnesian limestone of a cream-colour, containing 



shells of BakevelUa and Schizodus 10 6 



5. Breccia, containing pebbles of coal -measure, sand- 



stone, and slate-rocks 3 o 



6. Red and purple sandstones 110 o 



7. Conglomerate sandstone, full of white quartz 



pebbles, and containing common coal -plants ... 30 o 



The bed of limestone contains numerous small hollows 

 filled with spar, and is one mass of indistinct fossil shells, 

 chiefly of the genus BakevelUa. Its composition in lOO 

 parts is as follows : — 



* Above the bed of limestone, Prof. Sedgwick noticed a bed of siliceous 

 sandstone, containing jasper and chalcedony, which I did not see, probably 

 owing to its being covered up by fallen debris. 



