40 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Nov. 2, 



Nos. I and 2. — Grey, drab, and reddish yellow sandstones and con- 

 glomerates ; and dark red, chocolate, and grey argillaceous and 

 arenaceous shales. Large drift-plants, and in lower part erect 



Calamites 226 7 feet. 



(This corresponds with the " Newer, or Upper Coal-forma- 

 tion of Pictou," as described by Mr. Dawson.) 

 No. 3. — Grey and reddish sandstones, grey and reddish shales, with 

 carbonaceous shales, underclays, and 22 seams of coal. Erect 



plants at two levels 2134 feet 1 inch. 



No. 4. — Grey, drab, and reddish sandstones ; grey, reddish, and 

 chocolate shales, grey beds greatly preponderating ; carbona- 

 ceous shales, bituminous limestones, underclays, and 45 seams 

 of coal. Erect plants at eighteen levels; sbells (Modiola) and 



fish-scales 2539 feet. 



No. 5. — Reddish and grey sandstones and red and greenish shales, 

 red beds greatly preponderating ; some beds with calcareous 



concretions. Remains of carbonized plants 2082 feet. 



No. 6.— Grey, drab, and reddish sandstones, constituting nearlj- two- 

 thirds of the whole ; grey and reddish shales, carbonaceous 

 shales, underclays, and bituminous limestones ; 9 seams of coal. 

 Upright plants at one level ; great quantities of drift-plants, 



shells {Modiola), and fish-scales 3240 feet 9 inches. 



(Nos. 3, 4, 5, and 6 contain the equivalents of the productive 

 coal-measures of Pictou and Sydney, and in part of the sand- 

 stones which separate them from the Lower Carboniferous 

 series.) 

 Nos. 7 and 8. — Reddish and grey sandstone, red conglomerate, red 

 and chocolate shales, concretionary limestone, and two beds of 



gypsum. Remains of plants 2308 feet. 



(Below these beds, and separated from them by a space equal 

 to 300 feet of vertical thickness, is a thick bed of limestone, 

 ■with shells of Vroductvs Lyelli, and other fossils of the Lower 

 Carboniferous series. This, with the overlying conglomerate, 

 gypsum, red shale, and sandstone, is equivalent to the Lower 

 Carboniferous or Gypsiferous series of Windsor, Shubenucadie, 

 Pictou, Plaister Cove, &c., as established by Sir C. Lyell.) 

 The entire section contains 76 beds of coal, and 90 distinct Stig- 

 maria-underclays. All the coals except one rest on Stigmaria-under- 

 clays ; and there are 15 Stigmaria-underclays without coals. Erect 

 plants were observed at 22 levels. There are 24 bituminous lime- 

 stones, 17 of which are immediately connected with seams of coal. 



The portion of section examined by Sir C. Lyell and 'Six. Dawson 

 in 1852, and by Mr. Dawson in 1853, includes the lower part of 

 No. 3 and the whole of No. 4. In this portion of the section the 

 number of coals and bituminous limestones seen by us corresponds 

 with that of INL*. Logan's. We found, however, erect plants at a 

 number of additional levels, though some of the beds in which erect 

 plants were seen by i\Ir. Logan contained none at the time of our 

 visit. The differences in detail between Mr. Logan's section and 

 that in this paper, arise mainly from different estimates of tbe limits 



