Icy Plateau, the source of the New England Glacier. 329 
central or northern North America, the height must have been 
moving ice again touched bottom and resumed its work of abra- 
sion. This is precisely parallel to what happened to the gla- 
tion of other, perhaps higher, plateaus over the more northern 
and poet Wester poraues of the continent, and all a sequel to 
Majestic uplifts of the Tertiary, would have made a Glacial 
tic, or whatever the eccentricity of the earth’s orbit, though 
readily of course if other circumstances favored. Having 
ada being then on the seaward slope of the high ; 
of, as sow: on the landward slope, could not have had —— 
paratively dry climate with only an annual fall of 30 inches 0 
moisture. 
