J. DeLaski on Glacial Action about Penobscot Bay. 341 
valley immense blocks of the gray micaceous sandstone from the 
brow of the overlooking hill have been projected—not as if they 
had merely tumbled down and accumulated as talus—for man 
of these boulders have been carried to a considerable distance 
over the top of the latter mountain, and are very perceptibly less 
angular than those which lie at the base of the precipice. To- 
ward the southern extremity of Mount Battie, strize appear again, 
one thousand feet above the sea; and the entire top of the 
mountain bears evidence that it has been thoroughly denuded 
upon a most magnificent scale. The boulders here found were 
to the plain below, though this part of Mount Battie is abrupt, 
falling off at an angle of seventy degrees or more. At this ex- 
tremity of Mount Battie, along the ascent, the strise runa few 
egrees-—and in one case as much as twenty—out of the usual 
from the great hill before them. They are identical in composi- 
tion with.the mountain, so that we here again see evidence that 
The striee upon these rocks are developed in the most 
may be traced up and down, over the tops and along the sides 
the ledges, the: aries pointing directly ‘toward the high hills 
‘on the north 
On examining the island of Mount Desert, which, like Vinal- 
haven, is Sahhipenedl of agente and the argillo-micaceous slate, 
