As we were now three days' journey from the last water which could be depended on for more than a few days, and the channel of the creek had been so completely lost on the plain that it was uncertain whether the marks of inundations near this camp had been caused by the creek flowing to the west, or by some tributary flowing to the east, I determined to attempt a south-west course, in the hope that, should the country prove rocky, the heavy showers might have collected a sufficient quantity of water to enable us to continue a southerly route, and accordingly selected the most prominent point of the rising ground to the south of our position, and at 6.5 a.m. started north 235 degrees east. After leaving the open plains we entered a grassy box forest, which continued to the foot of the hills, which we reached at 8.0. The slope of the hills proved very scrubby, with small eucalypti and acacia, the soil red sand and ironstone gravel; at 9.0 reached the highest part of the hills for many miles round. To the south the country was slightly depressed for ten or fifteen miles, and then rose into an even ridge or plain, the whole country appearing to be covered with acacia and eucalyptus scrub. To the west and north the view was more extended; the low ridge of sandstone hills extended to the west-north-west, on the northern side of the grassy flats for thirty miles, and only broken by a large valley from the north. Throughout its whole extent this range appeared to rise to 150 or 200 feet above the plain, and had the appearance of being the edge of a level tableland. South of the grassy plain, the western limit of which was not seen, the country rose gradually to eighty or 100 feet, and presented an extremely level and unvaried appearance. It was evident that our only chance of farther progress was to follow the grassy plain to the west till some change in the country rendered a southerly course practicable, it being probable that some creek from the north might join the grassy plain, and that the channel which had been lost might be reformed. At 9.30 steered north-west, and at 12.30 p.m. cleared the acacia scrub, and at 1.30 reached the bank of the creek, which had formed a channel twenty yards wide, with pools of water, which was brackish; but we were too glad to find any water which we could use without detriment to object to it because it was not agreeable in taste, and therefore encamped. We have thus been a second time compelled to make a retrograde movement to the north after reaching the same latitude as in the first attempt to penetrate the desert; but I did not feel justified in incurring the extreme risk which would have attended any other course, though following the creek is by no means free from danger, as very few of the waterholes which have supplied us on the outward track will retain any water till the time of our return. The weather was calm and hot in the early part of