Coal-group 19. 



SECTION OF THE SOUTH JOGGINS. 169 



ft. in. 

 (Gray sandstone and shalo with one undcrclay) . 25 6 

 ( Gray shale. 



Coal-group 17 ^ fo«l and coaly shale 3 inches . . . .03 



(^ Argillo-arenaceous undcrclay, Stigmaria. 



The roof has vegetable fragments and Cordaites. The coal 



is hard and coarse, and contains flattened broad-ribbed Sigil- 



laria, Cordaites, and vascular bundles of ferns. 



(Shale and sandstone, erect trees at one level) . . 31 .'i 



xiir. 

 C Gray shale. 



Coal-group 18 -< t'ort^ 8 inches 8 



(^ Argillo-arenaceous underclay. 



The roof has an erect Sigillaria. Tlie coal is shaly and lami- 

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

 tamites, and Alethopteris lonckitica. In one layer there are 

 Naiadites, Spirorhisj and scales of fishes. 



(Gray sandstone and shale in several beds, Stkj- 



maria) . . . . . . . . 29 



' Argillaceous shale. 



Coahj shale, 4 feet. 



Bituminous limestone, 2 feet 6 inches. 



Cual, 1 inch ........ 6 7 



The roof has Naiadites, scales and teeth of fishes, Ci/there, 

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

 bundles of ferns and prostrate Sigillarim. 



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



i Coaly shale, 1 foot. 



Coal-group 20 -j 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 Sigillaria, Sporangites, 



and vascular bundles of ferns. 



(Sandstone, and gray and black shale with coaly 



layers) 21 



TGray shale and calcareo-bituminous shale. 



Coal-group 21 .^ T'oo/, 10 inches 10 



(^ Argillaceous underclay, tStir/marin. 



The roof has obscure vegetable fragments and Naiadites. 



The coal contains vascular bundles of fems, bast tissue, 



uniporous cells, and scalariform and reticulated vessels. 



(Gray sandstone and shale. Two undcrclays) . 20 



( Gray sliale. 



Coal- group 22 -< t'oai and coaly shale, 2 inches . . . .02 



( Argillaceous underclay, Stigmaria. 



This bed was not well exposed. 



M 



