70 Geological Society: Mr. Murchison on the 
ton* to be ten, and the aggregate thickness to be sixty feet. The 
only one at present worked contains twenty-four fect of clean coal, 
and about two hundred and forty tons of fuel are raised daily. Pro- 
ceeding eastward the dip of the strata becomes more precipitous, 
and at New Glasgow, a distance of two miles, is a thick, highly 
inclined, very coarse quartzose conglomerate, considered by the 
miners to be a dyke, but by Mr. Logan to be a portion of the coal- 
measures. On Frazer's Mountain, to the east of New Glasgow, are 
two workable seams, measuring together about eight feet, and rest- 
ing, with the interposition of a stigmaria bed, on a deposit con- 
sisting of non-fossiliferous limestone and sandstone. Judge Hali- 
burton has given a detailed section of upwards of 600 feet of the 
strata at the Albion mines; and Mr. Logan, in an appendix, gives an 
elaborate list of beds, commencing 238 feet below Judge Halibur- 
ton’s section, and extending in a descending series through upwards 
of 2500 feet. He is of opinion, that the whole series is susceptible 
of being divided into the following groups :— 
1. Red and drab-coloured sandstones alternating with 
red and gray shales; a few coal-seams occurring 
chiefly towards the bottom, associated with lime- 
stone, and resting on a thick coarse conglomerate. 
2. Soft dark-coloured shales, with a few beds of sandstone, 
and richly stored with workable seams of coal and 
SEN RE OME Aa Mi 1 dee ip ne Pa ics Sesh a nig ie 5000 feet. 
ids SVBAEIEG MALONE as cde eh 3b otal = aud gin phe ae, soe ‘| ae 
4, Coal-measures, probably unproductive, consisting in 
the upper part of red sandstones and shales, and of 
carbonaceous shales resting on stigmaria fire-clays ; 
and in the lower, of red and gray sandstones, with 
afew bands of shale 2... .... 26... e eee ce pene 1900 ... 
5. Limestone 
All the above deposits contain carbonized vegetable remains, but 
in the beds next to be noticed they are rare. 
6. Soft variegated shales, alternating in the lower part 
With red slinles', 4 Yulee sla oak SES aia ge 650 feet. 
Pe PAESLORE™, 20,0080 tale sien a Ue pie Nit). pid Ridnwie bk 20 sa. 
Under every bed of coal which he examined, amounting to more 
than twelve, Mr. Logan detected the stigmaria fire-clay ; and he 
was informed by Mr. Poole, the superintendent of the Albion mines, 
that similar strata occupy the same position in the coal-field of Cape 
Breton Island. 
The limits of the Nova Scotia coal deposits have not been de- 
fined, and Mr, Logan states that considerable difficulties would 
attend an attempt to trace them, in consequence of the overlying 
gypsiferous strata. He believes that the Pictou field extends west- 
ward across Colchester county to the north side of the Basin of 
Mines, and that the seams which dip to the north at Kemptown 
and Onslow may belong to its southern side; he also believes that 
* Statistical Account of Nova Scotia. 
