78 
ICE-PERIOD IN AMERICA. 
A detailed description of these appearances 
could hardly be more than a monotonous repe¬ 
tition of my statements respecting their exist¬ 
ence in other regions ; hut the peculiar config¬ 
uration of this continent, as compared with the 
more mountainous countries of Europe and 
Asia, has led to some modifications of the 
same phenomena here, worthy of special notice. 
Thus far, the traces of ancient glaciers in 
America have been studied only east of the 
Rocky Mountains ; little is known of the gla¬ 
ciers still remaining in the high mountain- 
ranges dividing the eastern part of the conti¬ 
nent from California, still less respecting any 
indications of their former extension. There 
can be little doubt that such traces exist, and 
as soon as the so-called parks between Pike’s 
Peak and Long Peak are explored, we may 
hope for information on this point. Indeed, 
the investigation may be spoken of as already 
undertaken; for among the exploring parties 
now on their way to that region are some 
intelligent observers, who will not fail to make 
this point a subject of special study. But it 
is well known that the usual characteristic 
marks of glaciers extend over the whole sur- 
