J. P. Lesley on the Coal-measures of Cape Breton. 185 
No. 6. Sandstones, 2; os mgporacaiy limestone; 9 coal- 
beds ; shells and fish 2240 feet. 
Nos. 7, 8. ’ Sandstones, i at shales, nodular tina. 
stones, two beds af gypsum ; remains of ag - 2308 “ 
Interval, eee 
Massive. pie 14 Prod. ‘Liells aaa ofliee fone Car- 
boniferous fossils. 
It is very evident that the Sydney, Glace Bay, or Cow Bay 
section of less than 2000 feet of productive Coal-measures, can 
represent but —_ one of these divisions, and thatrit must be 
either No. 3, o. 4, or No. 6. Sir illiam Logan adds, in 
_ his resumé, that ‘Nos, 3 4, 5, and 6,* contain the equivalents of 
the productive Coal-measures of Pictou and Sydney, and, in part, 
of the sandstones which separate them from the Lower Carbonif- 
erous series.” Prof. Dawson describes minutely his own section 
of ‘2819 feet of the central part of the Coal Formation,” * in 
approaching which, after describing the lower parts,* he says:- 
“We have now, after r passing over beds amounting altogether to 
the enormous thickness of 7636 feet, — the commencement 
of the true Coal-measures.”’ the true Coal-measures he means, 
therefore, Division No. 4 a the learee part of Division No. 3, 
embracing less than 3000 feet of measures and containing but 
four coal-beds which can be ont workable, the rest being from 
one inch to eighteen inches thick. In descending order we have: 
Nine small seams in a thickness of measures of - - 586 feet. 
Main na seam, 3°6; parting, 1°6; coal, 1°6, - - . 
Three minute seams in an interval of - a = © 45 feet. 
Coal, *3; clay, 5; Queen’s vein, 1°9; shale, 4:4; wink 1-0 - 
«Ten small seams (largest 12) in an sass of = = 762 feet. 
Coal, with three clay partings, at: Bid 24. 
Three small seams in an waive of - - - - 206 feet. — 
. . - - 5. 
"Three small seams in an interval of - - - -. 17 feet. 
nterval of - - - - - - $2 feet. 
Coal and bituminous she: - - - - . 
Eleven small seams in an fe igs of - - - - 1153 feet. 
The aspect of this section resembles those on the east coast of 
Cape Breton, where Modiole and fish-seales are also abundant. 
The A bert or Pictou section is said also to contain but five or 
six ane of coal, two of which are of unusual thickness, as 
- follows; From the surface, down the Success Pit, 73 eet Main © 
~ Coal, 39: 1l feet thick; Interval, 157 feet; Dee , 249. 
Both thes 
ps 
e coal-beds, however, are far from presenting “solid faces 
4 ; Dawson’s Acadia, " at, Yh Ane 
ibed in Pree aeok: Soc., x, 1-42. 
: ayes Jour. Sc1.—Seconp Sexims, Vou. XXXVI, No. 107.—Szpr., 1863, 
