3ECTI0N OF Tin: SOUTH JOOGIN8. 169 



ft in. 



(Gray sandstone and shale with one underclay) . 25 6 



i < iray Bhale. 



' oat and co 



( Ajgillo-arei 



Coal-group 19. 



Coal-group 17 -^ Coal and coaly shale 8 inches . . . 3 



renaoeous underclay, SHgmaria. 



The roof has vegetable fragments and Cordattes. The coal 



is hard and coarse, and contains llattencd broad- ribbed Sigit- 



laria, Cordattes, and vascular bundles of ferns. 



(Shale and sandstone, erect trees at one level) . .313 



xnr. 

 ("Gray shale. 



Coal-group 18 < Coal 8 inches 8 



(Argillo-areuaceous onderclay. 



The roof has an erect Sig Maria. The coal is shaly and lami- 

 nated. It contains much Cordaites, also Lepidodendron, Ca- 

 lamites, and Alethopteris lonchitica. In one layer there are 

 Naiadi/es, Spirorbis, and scales of fishes. 



(Gray sandstone and shale in several beds, Stig- 



maria) 29 



Argillaceous shale. 



Coaly shale, 4 feet. 



Bituminous limestone, 2 feet 6 inches. 



Coal, 1 inch 6 7 



The roof lias Naiadites, scales and teeth of fishes, Cythere, 



and Spirorbis. The coal is hard and coarse, with vascular 



bundles of ferns and prostrate Sig Marias. 



(Shale and sandstone) . . . . . . 20 6 



( Couhj elude, 1 foot. 



Coal-group 20 •< Bituminous limestone, 1 foot 6 inches. 



( Coal and clay partings, 2 feet 4 inches . . 4 10 



The roof has Naiadites, Spirorbis attached to plants, and 



small rhombic fish-scales. The coal alternates with limestone 



at the top, and contains remains of SigMaria, Sporangites, 



and vascular bundles of ferns. 



(Sandstone, and gray and black shale with coaly 



layers) 21 



("Gray shale and calcareo-bituminous shale. 



Coal-group 21 -| Coal, 10 inches. 10 



(Argillaceous underclay, SHgmaria. 



The roof has obscure vegetable fragments and Naiadites. 



The coal contains vascular bundles of ferns, bast tissue, 



uniporous cells, and scalariform and reticulated vessels. 



(Gray sandstone and shale. Two underclay s) . 20 



( Gray shale. 



Goal-group 22 -? Coal and coaly shale, 2 inches . . . .02 



(Argillaceous onderclay, SHgmaria. 



Tliis bed was not well exposed. 



M 



