June 3.—Set forward on our route, passing over a rugged, barren, and rocky country for about four miles and a half, when we ascended a hill upon our right which promised a view in all directions. To the southward, south-west, and even west, the country was a perfect plain, interspersed with more of those dreadful scrubs which we had passed through. In coming from Mount Aiton to the south-east were some low ranges, with a level barren country between us and them; this hill was named Mount Caley, and the termination of Peel's range to the southward, a lofty rocky hill, was called Mount Brogden. On descending the hill, I had the mortification to find that one of the horses, who had hitherto performed well, now sunk under his load, and was unable to proceed farther: in short, all of them appeared so debilitated, that the utmost we could promise ourselves was their proceeding three or four miles farther in search of grass and water. Directing the man to stay by his load, we proceeded towards some burnt grass which had been seen from Mount Caley, and after going about four miles farther we stopped upon it. As the ultimate success of the expedition so entirely depended upon the capability of the horses to perform the journey, it was judged advisable that they should have two or three days rest before we attempted to penetrate farther; and as we were now on a spot that at least afforded them a mouthful of fresh wire-grass, I determined, if water should be found, to remain here until Friday morning.

The country is so extremely impracticable, and so utterly destitute of the means of affording subsistence to either man or beast; water is so precarious, and when found is only the contents of small muddy holes, which under different circumstances would be rejected equally by horses and by men, that I much fear we shall not be able to proceed much further; but my mind is made up to persevere until the last horse fails us, keeping that course which, although inclining to the westward, will bring us out upon the coast upon a nearer line than Cape Northumberland, which I intended to steer for when we quitted the Lachlan River.

Sent back assistance to the man and horse left under Mount Caley, and at eight o'clock they returned.

After searching in every direction, no water was found, except in a small hole evidently dug by the natives under Mount Brogden, and containing scarcely sufficient for the people.

June 4.—Weather as usual fine and clear, which is the greatest comfort we enjoy in these deserts, abandoned as they seem to be by every living creature capable of getting out of them. I was obliged to send the horses back to our former halting-place for water, a distance of near eight miles: this is terrible for the horses, who are in general extremely reduced; but two in particular cannot, I think, endure this miserable existence much longer.

At five o'clock, two men, whom I had sent to explore the country to the south-west and see if any water could be found, returned, after proceeding six or seven miles: they found it impossible to go any farther in that direction or even south, from the thick brushes that intersected their course on every side; and no water (nor in fact the least sign of any) was discovered either by them, or by those who were sent in search of it nearer to our little camp.

No other trace of inhabitants (besides the well from which we derive our supply of water) has hitherto been seen: no game of any kind, nor grass to support any, have resulted from the various routes and observations of the different persons who were employed for that purpose during the day. I almost despair of finding any, for the country being perfectly level (some few elevated stations excepted), and the soil a deep loose red sand, the rain which falls must be immediately absorbed, and indeed it is quite impossible that water should remain on the surface of the land which we have travelled over since we have left the river.

At the period we quitted the river I considered our height above the level of the sea to be about five hundred feet, an elevation too trifling to afford a hope that any streams could rise in these regions and flow thence into the sea. In traversing these flats, the declivity, when it could be observed, was always towards the west and north-west, obliging me to believe that either the country continued a desert of sand as at present, or that its westerly inclination would cause all that part of it to consist of marshes and swamps. Since quitting the river we have not enjoyed what under any other circumstances would be called drinkable water; what was found being merely the contents of shallow mud holes, in the bottom of acacia swamps, over which the dryness of the season alone enabled us to travel. We have uniformly been obliged to strain our water before we drank it, and its taste, from the decayed vegetable matter it contained, was sour and unpleasant.

June 5.—A clear cold frosty morning: sent the horses to the watering place: if it be any way possible to get them on, it is my intention to proceed to-morrow morning, as it is almost as much labour to them to go for water as it would be to perform a short day's journey.

From every thing I can see of the country to the south-west, it appears, upon the most mature deliberation, highly imprudent to persevere longer in that direction, as the consequences to the horses of want of water and grass might be most serious; and we are well assured that within forty miles on that point the country is the same as before passed over. In adopting a north-westerly course, it is my intention to be entirely guided by the possibility of procuring subsistence for the horses, that being the main point on which all our ulterior proceedings must hinge. It is however to be expected that as the country is certainly lower to the west and north-west than from south-east to south-west, there is a greater probability of finding water in this latter direction. In our present perplexing situation, however, it is impossible to lay down any fixed plan, as (be it what it may) circumstances after all must guide us. Our horses are unable to go more than eight or ten miles a day, but even then they must be assured of finding food, of which, in these deserts, the chances are against the existence.