200 ITE VY OGLE AL OT NG DOR OGN: 
Under glacial action it manifests its endurance very markedly, 
and constitutes, in favorable situations, a very notable constitu- 
ent of the drift. Its thickness is roughly estimated at 1500 to 
2000 feet. 
Reposing conformably upon the pinkish gray sandstone lies 
a deep series of more thin-bedded sandstones and shales, of 
reddish brown and dark hues. The sandstones, which predomi- 
nate over the shales, are less heavily bedded than the series 
below. ‘They manifest a marked disposition to split up into thin 
slabs under exposure, and hence degradation proceeds with much 
facility. Interstratified with the sandstones there are shaly beds 
of kindred constitution which were obviously once only the more 
muddy sands of the accumulating sediments. Besides these 
sandy shales there is found on the south side of Redcliff Penin- 
sula a very notable horizon of finely leaved shales of dark color, 
which disintegrate with great readiness into a soft talus of leaf- 
lets; extremely grateful to: the feet of the explorer) atter them, 
hard pounding over the rocky or bowldery surfaces that nearly 
everywhere prevail unsoftened by soil or vegetation. These 
more pronounced shales do not, however, appear to be sharply 
differentiated from the common sandstone and shale series, but 
possibly a more thorough study of the region would find grounds 
for separation. The thickness of the whole series can only be ~ 
vaguely estimated from such cursory observations as I was able 
to make, but I should judge that it exceeds rather than falls 
below the estimate of the preceding series. No careful measure- 
ments of the thickness of any of these series were made, and 
the figures given are general estimates that will be serviceable 
only in giving an approximate idea of the massiveness of these 
formations. 
The conformity of the three sandstone series among them- 
selves suggests that there may be no vital distinction between 
them and that they represent a consecutive sedimentation reach- 
ing a total thickness of four or five thousand feet perhaps. 
Unfortunately the series is extremely barren of fossils. The 
absence of these cannot be charged to any catastrophe which the 
