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missible, in the Northern lowland. This topographic subdi-
vision extends northward over the remainder of Graham island,
west of Naden harbour, and also over Langara island. It
has been observed by the writer from the sea only, but it is
a district characterized by low ridges, none over 500 feet, and it
is said to contain numerous large, open muskegs.

Central Plateau Province.

From the summit of Mount Etheline a good view may be
obtained of this province; and its external relations, already
described, may be seen. The plateau-like character is not at
first apparent; but closer inspection shows a striking accordance
in the levels of the hill tops and ridges. This plateau surface
extends southward across Skidegate inlet and is visible on the
northeastern part of Moresby island, where Table mountain,
and other flat-topped hills reach its level. The elevation of
the hill tops is not strictly uniform, but varies from 1,000 to
1,500 feet. It seems probable that this general level represents
a surface on which there was an approach to base-levelling,
after the uplift which followed the deposition of the Upper
Cretaceous sediments; but nothing more even than a rolling
surface, or perhaps a lowland surmounted by low monadnocks,
was developed. On this surface were poured out the floods of
Tertiary lavas which were erupted after a period of dyke and
sill intrusion. Although the lavas have since been largely
denuded from the south-central part of the island, the cap on
Mount Genevieve indicates that they once extended some
distance eastward from their present position in the Slatechuck
range.

East of the Honna valley, a flat-topped range of hills extends
northward from Skidegate inlet. Behind Queen Charlotte these
hills are 1,200 feet high and they gradually rise, until, east of
Camp Wilson, they are about 1,800 feet high. This ridge is cut
across by the valleys of Skowkona creek, a large tributary of
the Honna, and by the headwaters of the Tlell river, formerly |
called Threemile creek. About 9 miles from Skidegate inlet
these eastern highlands spread westward, and form a marked
upland which extends to the Yakoun river, and separates the