long. 149 degrees 30 minutes 20 seconds E.
23d December, 1831.

SIR,

I have the honour to state, for the information of His Excellency the
Governor, the progress I have made in exploring the course of the interior
waters to the northward of the Colony, with reference to the letter which
I had the honour to address to Col. Lindesay, on this subject, on the
19th ult.

On crossing Liverpool Range my object was to proceed northward, so as to
avoid the plains and head the streams which water them, and avoiding also
the mountain ranges on the east.

I arrived accordingly, by a tolerably straight and level line, at
Walamoul, on Peel's River; this place (a cattle station of Mr. Brown)
being nearly due north from the common pass across Liverpool Range, and
about a mile-and-a-half above the spot where Mr. Oxley crossed this
river.

PEEL'S RIVER.

I found the general course of the Peel below Walamoul to be nearly west;
and after tracing this river downwards twenty-two miles (in direct
distance), I crossed it at an excellent ford, named Wallamburra. I then
traversed the extensive plain of Mulluba; and leaving that of Coonil on
the right, extending far to the north-east, we passed through a favourable
interval of what I considered Hardwicke's Range, the general direction of
this range being two points west of north.

On passing through this gorge, which, from the name of a hill on the south
side, may be named Ydire, I crossed a very extensive tract of flat
country, on which the wood consisted of iron-bark and acacia pendula; this
tract being part of a valley evidently declining to the north-west, which
is bounded on the south by the Liverpool Range, and on the south-west by
the extremities from the same. On the west, at a distance of twenty-two
miles from Hardwicke's Range, there stands a remarkable isolated hill
named Bounalla; and towards the lowest part of the country, and in the
direction in which all the waters tend, there is a rocky peak named
Tangulda. On the north, a low range (named Wowa), branching westerly from
Hardwicke's Range, bounds on that side this extensive basin, which
includes Liverpool Plains. Peel's River is the principal stream, and
receives, in its course, all the waters of these plains below the junction
of Connadilly,--which I take to be York's River, of Oxley.

THE RIVER NAMMOY.

The stream is well known to the natives by the name Nammoy; and six miles
below Tangulda, the low extremities from