honeyman — on nova scotian geology. 389 



Intercolonial Railway. 



On referring to the Section Book we get the following measure 



ments : — 



Folly Lake 602 feet above the sea level — 



Crystalline rocks of Smith's cutting 507. 



Rocks of «* Wentworth" cutting 490. 



Middle Silurian cutting, near Caldwell's Brook. 453. 

 Lower carboniferous cong^lomerate 450. 



'c 



If we consider the conglomerate as having been formed on the 

 approximate level of the sea, at the beginning of the carboniferous 

 period, then the position of Folly Lake at that time was one hundred 

 and fifty two feet above the sea level. The rocks of Smith's cutting 

 fifty-seven feet, of Wentworth forty feet, and the Middle Silurian 

 rocks, next the conglomerate, three feet. The Mountains of the 

 Cobequids, which now rise to the height of eight hundred feet, were 

 no higher than three hundred and fifty feet, and West Chester 

 Sugar Loaf, the highest mountain in this range and in Nova Scotia, 

 which now rises to a reputed height of one thousand two hundred 

 feet, was elevated seven hundred and fifty feet above the surface of 

 the waters. McNeil's Mountain, Arisaig, the highest in the east 

 (one thousand and ten feet) rose to a height of five hundred and 

 sixty feet ; and the loftiest of the mountains of Cape Breton (nine 

 hundred feet) were only four hundred and fifty feet in height. 



Correlation. 



I have already directed attention to the probable relationship of 

 the crystalline, uncrystalline, and fossiliferous pre-carboniferous 

 rocks of the Cobequid Mountains. From a Dominion point of view 

 I would now turn to England. 



On examining Prof. Ramsay's great work * ' on th<3 Geology of 

 North Wales," I find in page 90, fig. 20, a repi^sentation of an 

 almost exact counterpart of the northern part of the Intercolonial 

 Railway section. The Wales section runs thus : 



1, — Syenite. 



2, — Speckled felspathic and talcose flaggy beds, Llandeilo 

 and Bala beds. 



