: 
J.P. Lesley on the Coal-measures of Cape Breton, 195 
surface of Nova Scotia and _— Denti ag a are confessed 
unstudied and almost unknown; secondly, because the incredi- 
ble thickness assigned to the Bente -measures throws doubt upon 
the positions assigned to the non-conformable horizons; thirdly, 
because the coal-beds themselves stand almost vertical in ma any 
places round the shores; fourthly, because the mountains of 
Nova Scotia, with apparently conformable Cashonlieaes lime- 
Stones, have apparently an Appalachian structure and aspect, 
have suffered vast denudation, exhibit cliff outcrops and section 
ravines, and may just as well have carried coal upon their origi- 
nal backs, as wecan prove that our Tussey, Black Log, Nesco- 
pec, Mahoning, ete Bsa Brush, and other Silurian 
and Devonian mountains did. There is an immense non-con- 
formable chasm in the pee west of the Hudson River, and 
the Catskill Mountains over it have no coal upon their backs; 
but the coal comes in regularly enough on them at the Lehigh, 
(a less distance than from Sydney to St. Peters, or from Picto 
to Windsor,) and the unconlormability in the Upper Silurian 
and Devonian has already disappe 
Dr. Dawson’s fourth objection ont be good, if I had really 
“supposed the Coal-measures of eastern Cape Breton to repre- 
sent the whole of the Coal-measures of Nova Scotia.” But I 
when unfounded, or eae: $ as injurious to *Tthologieat 
truth, as m6 careless identification of surface aspect may at bed 
moment mialony: I will ce leave to ac 
tribution of ek ‘and all the Pie is a from the atid 
tothe top, 2. That, nevertheless, there are differences observa- 
