GEOLOGICAL SOCIETY OF LONDON. 



In Judge Haliburton's statistical account of Nova Scotia^ ten 

 beds are stated to occur there, and the aggregate thickness is 

 stated to be sixty feet ; but only one seam, containing twenty- 

 four feet in vertical dimensions of clean coal, is at present 

 worked ; and its daily produce is about 240 tons. In Frazer's 

 Mount, near New Glasgow, two miles to the eastward of the 

 Albion Mines, are other workable beds, resting, with the 

 interposition of a stratum of stigmaria fire-clay, on limestone. 

 Judge Haliburton has given a section of the Albion Mines, 

 including 600 feet ; and in the appendix to Mr. Logan's 

 memoir is an elaborate list of beds, commencing 238 feet 

 below the Judge's section, and extending in the descending 

 series for upwards of 2500 feet. The whole of these series 

 Mr. Logan divides into the following groups : — 



L Red and drab-coloured sandstones with red and grey 

 shales, a few coal seams, occurring chiefly towards the bottom, 

 associated with limestone, and resting on a very coarse con- 

 glomerate of considerable thickness. 



2. Soft dark shales, with a few beds of sandstone, and 

 richly stored, particularly in the lower half, with workable 

 seams of coal and ironstone — 5000 feet. Beds of fire-clay, 

 with stigmariee, were found by Mr. Logan under every seam 

 of coal which he examined ; and he states that they are 

 reported to occur in the same position in the carboniferous 

 series of Cape Breton. 



3. Limestone with marine fossils — ten feet. 



4. Coal measures, probably unproductive, consisting, in 

 the upper half, chiefly of red and dark-coloured shales and 

 sandstones, also of carboniferous shales, resting on fire-clay, 

 with stigmarise ; and in the lower half, of strong red and other 

 sandstones, divided by a few bands of red shale— 1900 feet. 



5. Limestone — ten feet. All the above rocks contain 

 carbonised vegetable remains ; but in the beds next to be 

 noticed they are very rare. 



