68 THE JOURNAL OF GEOLOGY. 
two or three miles off shore, a very notable island, known as 
Conical Rock. Its name indicates its form, but does not sug- 
gest the jaggedness of its surface, which is quite pronounced, and 
again raises the question whether the great ice sheet has ever 
passed much beyond its present limits. 
A short distance beyond this, the Petowik glacier, the noblest 
of the isolated glaciers of this portion of the coast, presents 
itself. It has a breadth of seven miles, and arches forth gently 
into the bay. Its profile is singularly regular and rises gently as 
it stretches back from the edge of the sea cliff into the interior, 
where the glacier merges into the plains of the inland ice. Its 
transverse profile is a gentle arch with but slight convexity in 
the central part. The upper surface is comparatively free from 
crevasses, and nowhere in its course, so far as seen, did it show any 
cataracts. Its general expression is similar to that of the great 
Frederickshaab glacier of South Greenland, though it is much 
inferior to it in dimensions and impressiveness. The Petowik 
glacier appears to be relatively inert, discharging but few ice- 
bergs. 
Between the Petowik glacier and Wolstenholme Sound, the 
coast is relatively free from snow and ice. In the depths of the 
Sound large glaciers descend to the sea leve! or to its vicinity, but 
only very distant and imperfect views of these were had. Dalrym- 
ple Island, in the mouth of the Sound, closely resembles Conical 
Rock in its form and surface ruggedness, and doubtless has the 
same significance. A photographic illustration of it has been 
given in the introductory narrative (Fig. 3). Saunders Island, 
which stands farther within the mouth of the Sound, introduces 
us again to stratified clastic rocks. These have been absent since 
we left the Disco region. From this point they stretch to Cape 
Alexander, at least, though they are not everywhere the border 
rock. So far as identified, they consist of sandstones and shales. 
Along the shores of Granville Bay, and northward to Cape 
Parry, at the mouth of Inglefield Gulf, there are several glaciers 
of medium dimensions which descend from the ice cap of the 
plateau immediately above them, which is an extension of the 
