NATURAL HISTORY AND PHYSIOGRAPHY OF NEW BRUNSWICK. 
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crystalline Pre-Cambrian, fringed by a border of Cambro-Silurian or 
Cambrian, rocks, having a minimum water-elevation on the principal 
lakes of over 1,200 feet, and rising thence into broken plateaus and 
hills from 1,700 to 2,700 feet in height. As will later be shown 
(Note No. 49), these highlands are the remnants of an ancient much- 
dissected, warped, and perhaps faulted, peneplain, — the same, I believe, 
as that described by Daly in Nova Scotia, which he homologizes with 
the Cretaceous Peneplain of New England. Sharply marked off from 
this is the great rolling plateau on the northwest, in which the 
Tobique runs, witl^ minimum lake levels of over 700 feet and a general 
elevation of 800 to 1,000 feet. It is composed, for the most part. 
