ICE-PERIOD IN AMERICA. 
I N the autumn of 1846, six years after my 
visit to Great Britain in search of glaciers, 
I sailed for America. When the steamer 
stopped at Halifax, eager to set foot on the 
new continent so full of promise for me, I 
sprang on shore and started at a brisk pace for 
the heights above the landing. On the first 
undisturbed ground, after leaving the town, I 
was met by the familiar signs, the polished 
surfaces, the furrows and scratches, the line- 
engraving of the glacier, so well known in the 
Old World ; and I became convinced of what I 
had already anticipated as the logical sequence 
of my previous investigations, that here also 
this great agent had been at work, although it 
was only after a long residence in America, 
and repeated investigations of the glacial phe¬ 
nomena in various parts of the country, that I 
fully understood the universality of its action. 
