SECTION OF THE 301 I'll J0OQIN8. 



165 



tychius, Diplodus, Palaioniscus, and Rhizodus. The undcrclay 

 lias rootlets of Stigmaria, and the hed below this has large 

 roots of the same. 



ft. in. 

 (Gray sandstone and Bhale, the latter with nodules of 



ironstone. Erect trees at one level) . . . 30 

 ( hcay shale. 

 Con I; 11) inches. 

 Carbonaceous shale and coal, 7 inches. 



Coal-group 7 -! Coal, 2 feet 1 inch. 



Carbonaceous shale, 1 foot 6 inches.* 



Coal, 1 foot 6 inches . . . . . .66 



Gray argillo-arenaceous underclay, Stigmaria. 



This is the bed worked at the Joggins as the " Main Scam ;" 

 and I believe that it improves somewhat in mining it inward 

 from the shore. The roof has afforded Sigillaria catenvides 

 and other species, Alethopteris lonckitica, Cordaites borasaifolia, 

 Lepidodcndron elegans, Trigonocarpa, Naiadites, Spirorbis, 

 Cythere, fragments of insects. (?) The mineral charcoal con- 

 tains bast tissue, scalariform, epidermal, and cellular tissues. 

 In the compact part of the coal there is dense cellular and 

 epidermal tissue. The roof is especially rich in Cordaites, 

 sometimes with Spirorbis adherent. 



(Gray sandstone and shale, with many ironstone 

 nodules in the shale, and erect Sigillaria and un- 

 derclays at five levels. One of the latter has large 

 stumps of Stigmaria and a thin coaly layer 



resting on it) 68 



' Gray shale with nodules of ironstone. 



Coal, 2 inches. 



Gray shale, 4 inches. 



Coal, 3 inches. 



Carbonaceous shale, 1 foot 3 inches. 



Coal, 1 inch. 



Argillaceous shale, ironstone nodules, 4 feet. 



Coal, 1 foot 7 1 



Dark argillo-arenaceous underclay, ironstone no- 

 dules, and Stigmaria. 



The roofs of the first and second beds in this group are 

 among the richest in fossils in the Joggins section. They 

 have afforded Pecopteris lorichitica, Cyclopteris, Cyperites, 

 Cordaites borassifolia, Cardiocarpum Jiuitans, Sigillaria elegans, 

 I.* l>idophloios Acadianus, Lepidodcndron undulation, Pinnu- 

 laria, Trigonocarpa, etc. ; also Diplostylus Dawsoni,\ Euryp- 

 terus, Cythere, Naiadites, and Spirorbis attached to plants. The 



* Thins in mining to the N. E. The details of this seam have been corrected in 

 this edition from a late report by Mr Rutherford. 

 t Salter, Quart. Journ. Geol. Soc., vol. xix. p. 77. 



Coal-group 8. 



