From the spot last spoken of, the river held on a due south course for the remainder of the day; and at the same time changed its character. It lost its sandy bed and its current together, and became deep, still, and turbid, with a muddy bottom. It increased considerably in breadth, and stretched away before us in magnificent reaches of from three to six miles in length. The cliffs under which we passed towered above us, like maritime cliffs, and the water dashed against their base like the waves of the sea. They became brighter and brighter in colour, looking like dead gold in the sun's rays; and formed an unbroken wall of a mile or two in length. The natives on their summits showed as small as crows; and the cockatoos, the eagles, and other birds, were as specks above us; the former made the valley reverberate with their harsh and discordant notes. The reader may form some idea of the height of these cliffs, when informed that the king of the feathered race made them his sanctuary. They were continuous on both sides of the river, but retired, more or less, from it, according to the extent of the alluvial flats. The river held a serpentine course down the valley through which it passed, striking the precipices alternately on each side. The soil on the flats was better, and less mixed with sand than it had been, but the flats were generally covered with reeds, though certainly not wholly subject to flood at any time. The polygonum still prevailed upon them in places, and the blue-gum tree alone occupied their outskirts. From the several elevations we ascended, the country to the N.W. appeared undulating and well wooded; that to the eastward, seemed to be brushy and low. Certainly there was a great difference in the country, both to the eastward and to the westward. We had frequent views of the mountains we had seen, or, I should have said, of a continuation of them. They bore nearly west from us at a very great distance all day. We fell in with several tribes, but did not see our old friend, although, from the inquiries we made, it was evident he was well known among them. It would disgust my readers were I to describe the miserable state of disease and infirmity to which these tribes were reduced. Leprosy of the most loathsome description, the most violent cutaneous eruptions, and glandular affections, absolutely raged through the whole of them; yet we could not escape from the persecuting examination of our persons that curiosity prompted them in some measure to insist upon. REJOINED BY OUR OLD NATIVE GUIDE.