1865.] DAWSON- COAL-rORMATIOIf. 10 



■ The coal is coarse, earthy, and shaly. It contains Cor- ft. in. 

 daites, fern stipes, and bast tissue. 



(Eeddish shale and grey sandstone, the latter seen in 



the cliff to thin out and give place to reddish shale) 53 9 



{Grey sandstone. 

 Coal 1 inch 1 

 Grey and reddish sandy understone, Stigmaria. 



The coal is coarse and shaly. No fossils were observed, 

 except stumps and rootlets of Stigmaria in the underclay. 



(Reddish grey shale and grey sandstone) 6 



{Reddish grey shale. 

 Coa^ 2 inches 2 

 Grey and reddish argillaceous underclay, Stigmaria. 



The coal is coarse and earthy. No fossils were observed, 

 except Stigmaria rootlets in the underclay. This and the 

 last coal are to be regarded merely as fossil vegetable soils 

 or dirt-beds. 



(Grey sandstone and grey and reddish shale. One 



underclay, and erect Calamites in the lowest bed) 239 6 



(Grey argillaceous shale. 

 C(9rt/2 inches 2 

 Grey argillo-arenaceous underclay, Stigmaria. 



The coal is filled with leaves of Cordaites horassifolia, 

 dividing it into thin papery layers. The underclay has 

 many large branching roots of Stigmaria. 



(Grey shale and sandstone) 19 



r Grey arenaceous shale. 



Coal-group 6 ... j Coa? 3 inches 3 



[ Grey argillo-arenaceous underclay, Stigmaria. 



This coal is composed of flattened bark cxf Slgillaria, of 

 which there are many layers in the thickness of the bed. 

 The species are not distinguishable. 



(Grey sandstone and shale. One underclay with 



Stigmaria) 12 6 



{ Grey argillaceous shale. 



Coal 1 inch. 

 I Grey argillacous underclay, Stigmaria, 1 ft. 6 m. 

 Coal-group 7 ...{ Coal 2 inches. 



Grey argillaceous underclay, Stigmaria, 4 inches. 

 I Coal 1 inch. 

 1^ Grey argillaceous underclay, Stigmaria 2 2 



This is an alternation of thin coarse coals or fossil vege- 

 table soils with Stigmaria subsoils. The roof-shale con- 

 tains erect Calamites, which seem to have been the last 

 vegetation which grew on the surface of the upper coal. 



(Grey and reddish sandstones and shales) 73 



{Red and grey shale. 

 Coal 1 inch 1 

 Grey hard underclay, Stigmaria. 



This coal contains flattened trunks of Slgillaria scutel- 

 lata, or an allied species, and of other Sigillaria^, also 



