106 
GLACIAL PHENOMENA IN MAINE. 
Let us see now how this agrees with the 
facts. I will not recapitulate the substance of 
my last article on this subject, “ The Ice-Pe¬ 
riod in America.” It gave a general sum¬ 
mary of the glacial phenomena on this conti¬ 
nent, as compared with those of Europe, stating 
at the same time my reasons for believing that 
immense masses of ice would move over an 
open plain nearly as rapidly as in a slanting 
valley, and from the same causes as those 
which determine the advance of the Swiss gla¬ 
ciers down the Alpine valleys. This article 
appeared in June, 1864. I had intended to 
follow it with one upon the appearances of the 
drift in this country; and in September I went 
to Maine in order to examine the drift phe¬ 
nomena on the islands and coast of that State, 
and compare them with those of the Massa¬ 
chusetts shore. At Bangor I fell in with a 
friend, who, when he heard the object of my 
journey, proposed to me to pass a day or two 
in a drive with him northward along the 
“ horsebacks,” in the direction of Mount Ka- 
talidin. I desired nothing better; for a pre¬ 
vious glimpse of one horseback in the neigh¬ 
borhood of Aurora had already shown me their 
