1853,] • DAWSON COAL-MEASURES, NOVA SCOTIA. 9 



Shale, calcareo-bituminous, and bituminous limestone. Modiola, 



Cypris, &c 5 



Coal, full of minute spines 4 



*Underclay, passing into chocolate shale. Rootlets 3 



VI. 



*Shales, chocolate and sandstone. Near bottom an erect tree 



rooted in hard arenaceous underclay. Stigmaria-rootlets ... 38 



Shales, chocolate and grey, and sandstones 63 



Sandstone, grey, with false stratification. Trunks of trees 15 



V. 



Shale, chocolate above, grey below. Thin coaly layers in bottom, 



Poacites 15 



*Bituminous limestone. Rootlets, Cypris 5 



Underclay. Rootlets 2 



IV. 



Sandstones and shales 30 



Sandstone, grey Erect Calamites, flattened trunks 8 



Shales, chocolate and grey. An erect tree 40 



III. 



Bituminous limestone. Cypris, Modiola, Coprolites, Fish-scales 5 



Bituminous shale 4 



Bituminous limestone. Cypris, Modiola, &c 3 



Bituminous shale 11 



Coal 3 



Bituminous shale 11 



Coal 3 



Bituminous shale 7 



Bituminous limestone, earthy. Coprolites, Modiola, Fish-scales, 



Cypris 10 



Bituminous limestone, with coaly layers 7 



Shale and ironstone balls 7 



Bituminous limestone, calcareo-bituminous shale, and coaly layer. 



Fish-scales, Cypris, &c 3 



Shale, grey 3 6 



Coal and bituminous shale. Modiola 3 



*Underclay. Rootlets of Stigmaria 1 6 



Shale, arenaceous, and ironstone balls. Rootlets 5 



Sandstone, grey 4 



Shale, grey 4 



Shale, black 6 



Bituminous limestone. Modiola, Cypris, Coprolites 7 



Coal 5 



*Underclay, passing into chocolate shale. Rootlets of Stigmaria. 8 



II. 



Shales, chocolate and grey, and sandstones 45 



I. 



Sandstone, grey. An erect tree (Lepidodendron?) S inches 



diameter, 4 feet high ; erect Calamites 12 



