nd 358,) decomposed on the
surface and breaking into rhomboidal fragments. From the middle Terrace
at the base of Mount Conybeare.

366 A somewhat rhomboidal portion of flinty-slate, apparently part of a
bed. From the Lower Terrace of Mount Conybeare, which is composed of
this rock. The terrace is ten miles distant from the sea-coast, and the
intervening ground is swampy.

The whole series of specimens from Mount Conybeare, (Nos. 356 to 366,)
appear to belong to transition rocks; and the continuity of the
formation with that of Mount Fitton is rendered probable, both by the
resemblance of the specimens and the geographical situation of the
mountains.

Captain Franklin saw no rocks, _in situ_, on the coast to the westward
of the Richardson Chain; but he gathered boulders of the following rocks
from the bed of the Net-setting Rivulet, which flows from the British
Chain of the Rocky Mountains, and falls into the Arctic Sea, between Sir
P. Malcolm River and Backhouse River.

367 Greenstone; 368, yellowish-gray sandstone; 369, dark-coloured
splintery-limestone; 370, 371, 372, dolomite; 373, quartzose sandstone,
like the old red sandstone; 374, grauwacke-slate; 375, quartz and iron
pyrites.

Boulders of the under-mentioned rocks were gathered on Flaxman Island.

378 Fine-grained, greenish clay-slate, obviously of primitive rock,
abundant in the neighbourhood, and supposed to have been brought down by
the rivulets which flow from the Romanzoff Chain. 379, quartz.

376 and 377 were from Foggy Island, and are rolled specimens of
flinty-slate; one of them containing corallines.

[34] Page 268.

[35] 134. These specimens have a wood-brown colour internally, and
appear to be composed of minute grains of quartz, variously coloured,
white, yellowish-brown and black, cemented together by an earthy basis.
It is a hard and apparently durable stone, occurring in layers an inch
thick, and having its seam-surfaces of a grayish-black colour, with
little lustre, as if from a thin coating of bituminous clay.

135, are specimens of a more compact, harder, and finer-grained
quartzose sandstone, with less cement, and of a deeper bluish-gray
colour.

[36] Mackenzie attempted to ascend this hill, but was compelled to
desist by clouds of musquitoes, (July 6th, 1789. _Voyage to the Arctic
Sea_, p. 40.)

136 This limestone effervesces strongly with acids, breaks into
irregular fragments, but with an imperfect slaty structure, and has