GLACIAL PHENOMENA IN MAINE. 
117 
higher level indicate an earlier phase in the 
history of the glacier, when the ice was thicker; 
while the terminal moraine records the wast¬ 
ing of the glacier, until it occupied a much 
smaller area. As the Gulf is an interesting 
locality for the study of ancient glacial phe¬ 
nomena in Maine, I must point out its bear¬ 
ings with more precision, for the benefit of 
those who may care to verify my statements 
by personal observation. To the east of the 
hotel there is a knoll, on which stand the 
smelting-works. This knoll itself forms a part 
of the moraine ; but its character may be more 
distinctly appreciated from the shore of the 
lake, looking toward the smelting-works. In 
this position, the abrupt inner side of the cres¬ 
cent-shaped wall faces the observer. 
The traces of this local glacier in two suc¬ 
cessive phases of its existence are not more 
distinct than are those of the great ice-sheet 
in which all lesser glaciers were once merged, 
over the whole region. And not here alone. 
I have tracked its footsteps on its southern 
march from the Katahdin Iron Works to Ban¬ 
gor, and thence to the sea-shore. Every natu¬ 
ral surface of rock is scored by its writing, 
