122 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [DeC. 2 



V. 



Coal-group 39. 



ft. in. 



r Red and grey shale, with ironstone, 



I Cba^^inch 0^ 



I Grey underclay, with Stigmaria, resting on bitu- 

 [ minous limestone, with Stigmaria and Cytherc. 



This thin coal consists of a layer of flattened trunks, pro- 

 bably of Sigillaria, with a quantity of mineral charcoal. 



(Red and grey shales. One bed with erect Calamites, 

 ■ another with erect 8igillaria) 65 



Coal-group 40. 



Coal-group 41 . . 



III. 



'Grey shale and ironstone. 

 Bituminous limestone and shale, with coaly films, 



7 inches. 

 Underclay 1 foot. 

 Coal 1 inch. 

 Coaly shale 3 inches. 

 Underclay 1 foot. 

 Bituminous limestone 6 inches. 



Coal and coaly shale 2 inches 3 7 



^ Argillaceous underclay, ironstone, and Stigmaria. 



The bituminous limestone and shale have Naiadites, 

 Cythere, Spirorhis, scales of fishes, and coprolites, and a large 

 spine of Gyracanthus, also roots of Stigmaria. The upper 

 underclay holds carbonized erect trunks. The lower coal has 

 vascular bundles of ferns and Cordaites. The roof supports 

 erect stumps. 



(Underclay with ironstone nodules) 5 



' Underclay as above. 



■ Calcareo-bituminous shale and films of coal 3 4 



Argillaceous underclay, Stigmaria. 



The bituminous limestone has Naiadites carbonarius, 

 Cythere, GOi^rolites, and Spirorbis. The roof has prostrate 

 Sigillarice converted into coaly layers. The underclay has 

 distinct stumps of Stigmaria. 



(Shales with Stigonaria and ironstone, sandstones, 

 bituminous limestone, and carbonaceous shale at 



bottom) 14 4 



/^Bituminous limestone. 



Coal 3 inches. 



Shale 1 foot. 



Coal 1 foot. 



Underclay, Stigmaria, 1 foot. 



Coal 2 inches 3 5 



^ Dark argillaceous underclay, Stigmaria. 



The roof contains Naiadites, Cythere, and coprolites. The 

 coal is coarse, pyritous, and shaly, and has bark of Sigillarla, 

 Calamites, and vascular bundles of ferns. It seems to be the 

 edge of a bed, as it thins rapidly in the direction of the bank, 

 or to the east. 



Coal-group 42. 



