J. DeLaski on Glacial Action about Penobscot Bay. 343 
the western side of Carver’s Harbor and pass along north toward 
the highest granitic hill in the town, there rises a series of terra 
one above another, along a north and south course, till they 
attain the altitude of 150 feet above the water. The highest 
we meet again another slope, rising gradually toward the south 
till it attains the usual height of this elevated ridge. 
I consider this dell as having been gouged out of the rock, as 
the most of our harbors, coves, and ponds have been, by glacial 
action. We see the hills not only curving easily to the north, 
and steep on their southern sides, but we find also that their east 
and west sides are abrupt. We know that this abruptness, in 
the southern part of Maine, must have been caused by dennda- 
_ tion; not such a wearing away as slow moving icebergs would be 
likely to make, though hundreds of thousands had struck in the 
Same place. And those east and west sides both low, and high 
Up the hills, are often seen beautifully, never roughly, scored, A 
Suppose that when an iceberg touches along the side of a sub 
marine hill, it would be deflected like any floating body, by the 
continuation of the current around the hills; it could not uni- 
formly chafe and scratch the rock in all its inequalities of wall; 
for we know that the sides of the bergs are not abundantly ape 
plied with those stone-grooving tools necessary for the smooth- 
Ing and scratching. 
And, let me ask, by what means were those oblong and wedge- 
om ae boulders deposited in the peculiar manner in which we 
them? They do not lie with their longer diagonals across 
the strize, but were left by some agent /ead on in their course to- 
Ward the south. Icebergs could not have dropped them thus, 
While the movements of a glacier would have compelled the 
ulder to take this wedge-shape form in many cases, and would 
have kept its base always directed forward in the line of its 
Course, 
__ if then there is evidence of a power so great, acting against 
the highest hills of the coast, even leaving over their sum- 
Mits indisputable marks of extensive denudation, we have rea- 
80n to believe that the glacier which swept across them was of 
Yast thickness. Had the glacier reached barely above the top 
