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 or four miles from its left bank.  I named this after Mr. Robey, another friendly contributor to my outfit.  A large creek very probably carries the waters from this range to the Burdekin, in latitude 20 degrees 23 minutes.  The country was very ridgy and hilly; and we found it exceedingly difficult to proceed along the river.  We observed the poplar-gum again in the open forest, and a fine drooping loranthus growing on it.  Pandanus was also very frequent, in clusters from three to eight trees.  The clustered fig-tree gave us an ample supply of fruit, which, however, was not perfectly mellow.

Veins of calcareous spar and of quartz were again observed.  I ascended a lofty hill, situated about a mile and a half to the west of our encampment, and found it composed of felspathic porphyry, with a greyish paste containing small crystals of felspar; but, in the bed of the river, the same rock was of a greenish colour, and contained a great number of pebbles of various rocks, giving it the aspect of a conglomerate; but recognisable by its crystals of felspar, and from its being connected with the rock of the hill.  From the top of the hill, which is wooded with a silver-leaved Ironbark, I saw a very mountainous country to the N.N.W. and northward, formed into detached ranges and isolated peaks, some of which were apparently very high; but to the north-west and west no ranges were visible.