About 11 a.m., we arrived at the junction of a small river with the Murray, at which a tribe, about 250 in number, had assembled to greet us. We landed, therefore, for the double purpose of distributing presents, and of examining the junction, which, coming from the north, of course, fell into the Murray upon its right bank. Its waters were so extremely muddy, and its current so rapid, that it must have been swollen by some late rains. Perhaps, it had its sources in the hills we had seen; be that as it may, it completely discoloured the waters of the Murray.

We made it a point never to distribute any presents among the natives until we had made them all sit, or stand, in a row. Sometimes this was a troublesome task, but we generally succeeded in gaining our point; with a little exertion of patience. M'Leay was a famous hand at ordering the ranks, and would, I am sure, have made a capital drill-sergeant, not less on account of his temper than of his perseverance. I called the little tributary I have noticed, the Rufus, in honour of my friend M'Leay's red head, and I have no doubt, he will understand the feeling that induced me to give it such a name.

GEOLOGICAL EXAMINATION.

Not many miles below the Rufus, we passed under a lofty cliff upon the same side with it. It is the first elevation of any consequence that occurs below the Darling, and not only on that account, but also on account of the numerous substances of which it is composed, and the singular formation that is near requires to be particularly noticed. [See Appendix.] The examination was a task of considerable danger, and both Fraser and myself had well nigh been buried under a mass of the cliff that became suddenly detached, and, breaking into thousands of pieces, went hissing and cracking into the river.

THUNDER STORMS.

The weather about this time was extremely oppressive and close. Thunder clouds darkened the sky, but no rain fell. The thermometer was seldom below 104 at noon, and its range was very trifling. The wind shifted several times during the twenty-four hours; but these changes had no effect on the thermometer. It was evident, however, as the sun set on the evening of the 26th, that the clouds from which thunder had for the last four or five days disturbed the silence of nature around us, would not long support their own weight. A little before midnight, it commenced raining, and both wind and rain continued to increase in violence until about seven in the morning of the 27th; when the weather moderated.

Two or three blacks had accompanied us from the last tribe, and had lain down near the fire. As the storm increased, however, they got up, and swimming across the river, left us to ourselves. This was a very unusual thing, nor can I satisfy myself as to their object, unless it was to get into shelter, for these people though they wander naked over the country, and are daily in the water, feel the cold and rain very acutely.

Observing the clouds collecting for so many days, I indulged hopes that we were near high lands, perhaps mountains; but from the loftiest spots we could see nothing but a level and dark horizon. Anxious to gain as correct a knowledge of the country as possible we had, in the course of the day, ascended a sandy ridge that was about a mile from the river. The view from the summit of this ridge promised to be more extensive than any we had of late been enabled to obtain; and as far as actual observation went, we were not disappointed, although in every other particular, the landscape was one of the most unpromising description. To the S. and S.E., the country might be said to stretch away in one unbroken plain, for it was so generally covered with wood that every inequality was hidden from our observation. To the S.W. the river line was marked out by a succession of red cliffs, similar to those we had already passed. To the north, the interior was evidently depressed; it was overgrown with a low scrub, and seemed to be barren in the extreme. The elevations upon which we stood were similar to the sand-hills near the coast, and had not a blade of grass upon them. Yet, notwithstanding the sterility of the soil, the large white amarillis which grew in such profusion on the alluvial plains of the Macquarie, was also abundant here. But it had lost its dazzling whiteness, and had assumed a sickly yellow colour and its very appearance indicated that it was not in a congenial soil.

LINDESAY RIVER.

We passed two very considerable junctions, the one coming from the S.E., the other from the north. Both had currents in them, but the former was running much stronger than the latter. It falls into the Murray, almost opposite to the elevations I have been describing, and, if a judgment can be hazarded from its appearance at its embouchure, it must, in its higher branches, be a stream of considerable magnitude. Under this impression, I have called it the Lindesay, as a tribute of respect to my commanding officer, Colonel Patrick Lindesay of the 39th regt. I place it in east long. 140 degrees 29 minutes, and in lat. 33 degrees 58 minutes south. Mr. Hume is of opinion that this is the most southerly of the rivers crossed by him and Mr. Hovel in 1823; but, as I have already remarked, I apprehend that all the rivers those gentlemen crossed, had united in one main stream above the junction of the Morumbidgee, and I think it much more probable that this is a new river, and that it rises to the westward of Port Phillips, rather than in the S.E. angle of the coast.