Lesley.] 10'^ [November. 



No. 5. Sandstones and shales, red ; carbonized plants, . 2082 feet. 



No. 6. Sandstones, f; shales; bituminous limestone; 9 



coal-beds; shells and tish-scales, .... 3240 " 



No3. 7, 8. Sandstones, conglomerates, shales, nod. lime- 

 stones, two beds of gypsum ; remains of plants, . 2308 " 



Interval, 300 " 



Massive limestone with Prod. Lyelli and other Lower Car- 

 boniferous fossils. 



It is very evident that the Sydney, Glace Bay, or Covy Bay section 

 of less than 2000 feet of productive coal-measnres, can represent but 

 barely one of these divisions, and that it must be either No. 3, or 

 No. 4, or No. 6. Sir William Jjogan adds, in his resume, that "No3. 

 3, 4, 5, and 6,* contain the equivalents of the productive coal-mea- 

 sures of Pictou and Sydney, and in part of the sandstones which 

 separate them from the Lower Carboniferous series." Prof. Dawson 

 describes minutely his own section of " 2819 feet of the central part 

 of the Coal Formation, ""j" in approaching which, after describing 

 the lower parts, J he says : " We have now, after passing over beds 

 amounting altogether to the enormous thickness of 7636 feet, reached 

 the commencement of the true coal-measures. "§ By the true coal- 

 measures he means, therefore, Division No. 4 and the lower part of 

 Division No. 3, embracing less than 3000 feet of measures and con- 

 taining but four coal-beds which can be called workable, the rest be- 

 ing from one inch to eighteen inches thick. In descending order 

 ■we have : 



Nine small seams in a thickness of measures of . 

 Main coal seam, 3.6 ; parting, L6 ; coal, L6, . 



Three minute seams in an interval of . 

 Coal, .3 ; clay, .5; Queen's vein, L9 ; shale, 4.4; coal, 1.0, 



Ten small seams (large.>Jt 1.2) in an interval of 

 Coal, with three clay partings, ...... 



Three small seams in an interval of . 

 Coal, 



Three small seams in an interval of . 

 Coal, 



Interval of ........ . 



Coal and bituminous shale, ...... 



Eleven small seams in an interval of . 



The aspect of this section resembles those on the east coast of Cape 

 Breton, where modiol^e and fish-scales are also abundant. 



* Dawson's Acadia, p. 178. f P- 1''7. \ P. 127. 



kj Described in Proc. Geol. Soc. X, pp. 1—12. 



