21ST SEPTEMBER.--Thermometer at 6 A.M., 63 deg.. I found that the various tributaries to the river channel had imparted to it a greater tendency westward; but we fell in with it again six miles to the westward of where we had passed the night. Its character was the same--a concatenation of ponds amongst brigalow; but these seemed better filled with water, apparently from the more decided slopes and firmer soil of the adjacent country. The course next turned considerably to the southward of west, while one ana-branch separating from it, ran about westward. I found an open plain between these, across which I travelled; until, again meeting the southern branch, we crossed it where it seemed to turn more to the northward. The day was warm, and I halted two hours under the shade of some trees, where I laid down our journey on paper, and found we were making great progress towards Carpentaria, across a very open country. We were no longer in doubt about finding water, although in the heart of Australia, surrounded by an unbroken horizon. On proceeding, we passed some large huts near the river, which were of a more substantial construction, and also on a better plan than those usually set up by the aborigines of the south. A frame like a lean-to roof had first been erected; rafters had next been laid upon that; and, thereupon thin square portions of bark were laid, like tiles. A fine pond of water being near, we there spancelled our horses and lay down for the night. At 5 P.M. the thermometer was at 82 deg.. Height above the sea, 707 feet.