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cable in general to the Cretaceous coals of Graham island.
Whether the various seams are identical, or occur even at nearly
the same horizon remains to be considered.

In the Honna basin, there were probably two coal-forming
periods, during the earlier of which coal in the western part of
the basin at Cogwitz, Slatechuck, and Yakoun lake was accumu-
lated. During this period deeper water conditions seem to have
prevailed over the central and eastern portions of the basin, as
there appears to be no coal in them. Later, the shoal water
extended as far east as the central part of the basin and the
seam at Camps Robertson and Anthracite was formed. This
seam does not appear to extend east or south as already men-
tioned.

From the different character of the sediments of the Yakoun
basin, including both the enclosing rocks and the coal itself, it
appears probable that the Wilson seam is distinct from the
seams in the Honna basin. While the Cretaceous sedimentation
was doubtless continuous over what is now south-central Graham
island, the preponderance of evidence seems to favour the theory
that the coal seams were accumulated in localized, relatively
small basins, and that it is vain to search for the Wilson seam
in the Honna basin or the Honna Basin seams in the Yakoun
basin.

It is not planned in the present report to consider the pro-
cesses that have acted to form the bituminous coal of Camps
Robertson and Wilson. A consideration of them may be found
in various papers on the origin of coal, and no new facts bearing
on this stage of coal formation have been noted on Graham
island. Certain observations and deductions, however, with
regard to the formation of carbonite or natural coke and of the
anthracitic coal of Slatechuck valley and Cowgitz, will be set
forth here. Other facts on which the theory is based in part
have been already stated.

The appearance of the anthracitic material of the Slate-
chuck valley, Cowgitz, and other places, together with its ana-
lyses and mode of occurrence have been already described. It is
to be emphasized that this is a true bedded, syngenetic deposit,
a coal seam to all intents and purposes, and differing from an-