SCOITS LAST EXPEDITION 
water-cut labyrinth of ice which constitutes the north-west 
portion of the delta. 
Below the scarp of the Royal Society Range is a 
hinterland of parallel valleys. These are about lo or 
12 miles long, and are in many cases occupied by 
small glaciers in the western half of the valley. They 
are identical with the ^ finger ' valleys described in the 
reports on the glacial geology of the Rocky Mountains, 
U.S.A. Narrow ridges about 3000 feet high separate 
them. Some ' hang ' a thousand feet above the Koettlitz. 
Characteristic hills, triangular in plan, occur where these 
valleys join, and all of them ' head ' in beautiful cwms. 
Above these, cwms^ and more cwms, fret the scarp of Mt. 
Lister over the whole extent of its 10,000 feet face. There 
is little doubt that we have here an example of the way 
the glacial cycle commences its operations, for this is a 
fault scarp of comparatively recent date. 
(c) Granite Harbour^ like New Harbour, is probably 
a relic of the period of glacial maximum when the ice 
flood exerted tremendous erosive power on its bed, and 
was able to erode far below sea level. We shall, however, 
never be able to witness these maximum forces in opera- 
tion. Because a dwindling river has little effect on the 
topography it would be foolish to deny the action of a great 
river in flood; just as our observations in the Antarctic 
on a nearly stagnant or receding glaciation are not to be 
taken as descriptive of the most active periods in glacial 
history. 
The first feature that strikes tlie geologist is that as one 
proceeds north there is less and less land exposed below 
