150 
GLACIAL PHENOMENA IN MAINE. 
been omitted on some future occasion. Over 
this whole region, the glacial characters run 
due north and south, never deflected except 
by local causes, ascending, in undeviating rec¬ 
tilinear course, all the elevations, and descend¬ 
ing into all the depressions. How is it pos¬ 
sible to suppose that floating icebergs would 
advance over such an uneven country with this 
steadfast, straightforward march ? Instead of 
ascending the hills, they would be caught be¬ 
tween them in the intervening depressions, or, 
if the land were completely submerged, floated 
over them. The advocates of the iceberg theory 
forget also that an amount of floating ice, so 
much larger than is now annualty spreading 
over the Northern Atlantic, implies a far lower 
temperature; and with it we have the condi¬ 
tions necessary to cover the mainland with 
glaciers, instead of simply increasing the field 
of icebergs. Equally impossible is it to sup¬ 
pose that anything so unstable as water has 
produced such straight and continuous lines. 
Assuming, then, that these phenomena were 
produced by ice, let me add, in conclusion, 
that the glacial traces over the State of Maine, 
and especially between Bangor and the sea- 
