ed of the river, and in the
neighbouring hills. Several hills at the right bank were formed by a kind
of thermantide of a whitish grey, or red colour, and which might be
scratched easily with a penknife. Other conical hills or short ranges,
with irregular rugged crests, were composed of granite of many varieties,
red and white, fine grained without hornblende, or containing the latter
substance, and changing into sienite; and, at one place, it seemed as if
it had broken through Psammite. I observed quartzite in several
localities, and a hard pudding-stone extending for a considerable
distance. We were, no doubt, on the transition from the depository to the
primitive rocks; and a detailed examination of this interesting part of
the country would be very instructive to the geologist, as to the
relative age and position of the rocks.

A small fish, with yellow and dark longitudinal lines, and probably
belonging to the Cyprinidae, was caught. Wind prevailed from the
northward: the forenoon was cloudless; heavy cumuli in the afternoon.

We travelled at first on the right side of the river; but its banks
became so mountainous and steep, and the gullies so deep, that we were
compelled to cross it at a place where it was very deep, and where our
horses and cattle had to swim. Many of our things got wet, and we were
delayed by stopping to dry them.

April 4.--We moved our camp to latitude 20 degrees 24 minutes 12 seconds,
a distance of about nine miles N.W. by N. We passed several granitic
peaks and ranges; one of which I ascended, and enjoyed an extensive view.
The character of the country changed very little: open narrow-leaved
Ironbark forest on a granitic sand, full of brilliant leaflets of mica.
Some deep creeks came from the eastward. To the west and north-west
nothing was to be seen but ridges; but high imposing ranges rise to the
north and north-east. At one spot, large masses of calcareous spar were
scattered over the ground; they were probably derived from a vein in the
granite.

Three black ducks, (Anas Novae Hollandiae) were shot. Tracks of native
dogs were numerous; and a bitch came fearlessly down to the river, at a
short distance from our camp. Our kangaroo dog ran at her, and both fell
into the water, which enabled the bitch to escape.

April 5.--We re-crossed the river, which was not very deep, and travelled
about nine miles N. 75 degrees W. The river flows parallel to a high
mountain range, at about three