ita NT alla 
eS RISEe A he ee Peak Meee Me ee en gS knee 
J. P. Lesley on the Coal-measures of Cape Breton. 191 
the lower half of the column, and a large bed (4 to 8 feet) at 
the bottom. 
At Sydney (Glace Bay), in like manner, there are about a 
thousand feet of Coal-measures, with an 8 or 9 foot bed towards 
the top, a 6 foot bed half way down, two smaller beds in the lower 
half of the column, and a 7 or 8 foot bed near the bottom 
At Pittsburg, as at Glace Bay, the upper 18 inches or 2 foot 
of the high Main coal is rejected. 
At Pittsburg, as at Glace Bay, the middle 6 foot coal (U 
errors of the Alleghany River and Cook Vein of Six is 
Run) is famous for its solid face and excellent qualit 
No one should admit that such coincidences furnish a demon- 
stration of identity. But it must not be overlooked that the 
beds of the Pittsburg area have bok traced and identified from 
end to end of areas with a diameter, in all, of over a thousand 
miles, even across the denuded interval of Central Kentucky, 
The expectation may, therefore, be pardoned, not as an amiable 
enthusiasm, but a logical inference, that when the fossil 
groups of the individual beds of Cape Breton shall have been 
thoroughly studied by Lesquereux and other competent bot- 
anists, their identification with the beds of the West may be 
made somewhat more than possible. The zone of sediment, 
when taken along its isometric axis, is equal enough over a 
a priort incredible distances. Logan and Hunt and Murchison 
are finding the Quebec group and the Huronian yee Jearentae 
. systems in Scotland and Scandinavia, not by 
» but by 
aspect. No one doubts the extension of the 8 sees ‘grit and 
the Mountain limestone of England to Pennsylvania. [by 
q should the remarkably homogeneous and conbinnasly Flora of 
any one of the immensely outspread_beds of the Uni 
not be ey hadi oe continuous to Rhode Island, New Bruns- 
_ wick, and Cape Bre 
One remarkable ack however, in this resemblance o: f the 
_ two coal columns at Pittsburg and Sydney, must not be forgot- 
ten. JI refer to the mass of red shales which cap the Glace Bay 
Section, A similar deposit occurs, at a fixed horizon, widely 
| he over bid ees: Pennsylvania, but beneath, not above, the 
igh Main co 
Note on Mr. sis Paper on the Coal-measures of C reton ; by 
: J. 
W. Dawson, Principal of McGill College, at oe 
The new facts and general considerations on the Nova Scotia 
coal-field contained in Mr. Lesley’s paper, are of the highest inter- 
_ est to all who ade worked at ty geology of Nova Scotia. I think 
duty, however, to take exception to some of the statements, 
, which, I think, a taiget seliotion of facts would have induced 
~_» This note was read by Professor Lesley ro the ze enn eaioomphical: ip. 
ciety, and is is publiched in the same number of its 
