ILLUSTRATIONS OF DYNAMICAL GEOLOGY—BAILEY. 181 
The difficulty referred to, as to the location of the Port 
Mouton sand-hills, is enhanced when with these we compare the 
similar hills of blown sand which form portions of the shore of 
Barrington Bay. The accompanying Plates, vil and vill, will give 
a good idea of these, as regards both the extent of the area they 
cover, the height to which in places they have been heaped up 
and the fact that they are still travelling inland, burying bushes 
and even forests as they go. JI am without any exact measure- 
ments as to the area covered, but think that this cannot well be 
less than fifteen or twenty acres, while the height of the hills, 
which is greatest at the inner margin of the area, is probably 
not less than forty feet. It is said that a portion of the area, 
(which is on the lower part of Village-Dale,) was once occupied 
by a French village. However this may be, it is certain that 
the hills are gradually travelling inland, and that each year 
adds appreciably to their height as well as to their distance 
from the sea. In all these features they nearly resemble the 
sand hills of Port Mouton, but in two other important respects 
there is a noticeable difference. In the first place, while the 
dunes of the harbor last named are upon its western side, those 
of Barrington Bay are upon the eastern side of that indentation ; 
and, secondly, while in the former instance the rocks at hand 
are granitic,and well adapted to yield the necessary material for 
these accumulations, the sand-drifts of Barrington Bay rest on 
beds of Cambrian slate and quartzite. It is true that there is 
abundance of granite at the head and upon the west side of this 
latter Bay, but this is several miles distant. 
It is therefore again difficult to see what have been and are 
the special circumstances which have led to the production of 
such large deposits of such material at this particular spot. It 
is also difficult to see wherein either of these spots differs 
materially, either as regards exposure to the winds, nature of the 
rocks, or in other respects, from innumerable other localities along 
the shore, in which no trace of such deposits is to be found. 
Possibly further and closer study may remove the difficulties of 
explanation which now exist. 
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