GLACIAL STUDIES IN GREENLAND. 205 
Returning to the upper plane, it is worthy of note that its 
undulations are chiefly confined within a range of 500 feet. A 
panoramic view generally gives a mildly undulatory profile, as 
may be seen from the accompanying illustrations, and as will be 
more fully shown in the photographic illustrations that will be 
hereafter introduced in illustration of the glacial phenomena. 
Sometimes the profile is very markedly uniform. See Fig. 18. 
In the immediate district of my studies, there was but one prom- 
inence that has been dignified by the name of mountain, Mt. 
Bartlett, which overhangs Falcon Harbor and the headquarters 
of Lieutenant Peary, and which receives its characterization 
chiefly because of the sheer face it presents towards Bowdoin 
Bay, and because of its close association with the exploring expe- 
ditions. Its extreme height is little more than 2600 feet, and its. 
rise above the plateau but a few hundred feet. About the head of 
the Gulf are several prominences reaching, if I have noted Lieu-_ 
tenant Peary’s observations aright, perhaps 3000 feet. They are 
conspicuous solely because they are promontories. In no instance 
do these reach the grade of true mountains when referred to the 
plane of the plateau. Were it extended over the area of the 
Gulf, all would be reduced to hills of moderate dimensions. 
General bearings of the geological and topographic features upon 
the glacial phenomena.—l have dwelt upon some of the fore- 
going features, especially the last, because of their bearings upon 
the behavior of the ice sheet. In drawing inferences from this 
field and applying them to our own glacial domain, it is obvious 
that the effects of topography must be eliminated or discounted. 
In so far as the border of Greenland is roughly mountainous, in 
so far a disturbing factor is introduced into the deployment of 
the border of the ice. To this extent it must be presumed to 
depart from the habit which it would adopt upon the plains of 
northeastern America. It is scarcely necessary to note that the 
great drift sheet of our mainland lies for the greater part upon a 
relatively smooth plain. This indeed becomes rolling, and even 
to some extent rugged and mountainous at the east, but for the 
greater part the ancient ice sheet deployed with very great 
