24TH SEPTEMBER.--I continued to seek the river across extensive downs, in many parts of which dead brigalow stumps remained, apparently as if the decay of that species of scrub gave place to open ground. I turned now to the S.W., and became anxious to see the river again. At length we came upon a creek, which I followed down, first to the S.W. and next southerly, until it was time to alight, when we established our bivouac by a large lagoon in its bed, in latitude 24 deg. 3' 30" S. Thermometer, at 3 P.M. 98 deg.. Height above the sea, 688 feet. 25TH SEPTEMBER.--At 6 A.M. the thermometer stood at 73 deg.. We ought to have been retrogressive yesterday, according to the time calculated on for our stock of provisions; but we could not leave the river without tracing it to the furthest accesible point. We still continued, therefore, to follow the water-course which had brought us thus far, expecting at every turn to find its junction with the river, whose course had obviously turned more than usual to the southward. We fell in with a larger tributary from the N. W.; after which junction, the tributary took a more westerly direction than the minor channel which brought us to it. We thus came upon a large lagoon, beside which were the huts of a very numerous tribe of natives, who appeared to have been there very recently, as some of the fires were still burning. Well beaten paths, and large permanent huts, were seen beyond that encampment; and it was plain that we had entered the home of a numerous tribe. I should have gladly avoided them at that time, had not a sight of the river been indispensable, and the course of the creek we were upon, the only certain guide to it. Level plains extended along its banks, and I had been disappointed by the appearance of lofty Yarra trees, which grew on the banks of large lagoons. On approaching one of these, loud shrieks of many women and children, and the angry voices of men, apprised me that we had, at length, overtaken the tribe; and, unfortunately, had come upon them by surprise. "AYA MINYA!" was vociferated repeatedly, and was understood to mean, "What do you want!" (What seek ye in the land of Macgregor!) I steadily adhered to my new plan of tactics towards the aborigines, and took not the slightest notice of them, but steadily rode forward, according to my compass bearing. On looking back for my men, I saw one beckoning me to return. He had observed two natives, with spears and clubs, hide themselves behind a bush in the direction in which I was advancing. On my halting, they stole away, and, when a little further on, I perceived an old white-haired woman before me, on seeing whom I turned slightly to one side, that we might not frighten her or provoke the tribe. The whole party seemed to have been amusing themselves in the water during the noon-day heat, which was excessive; and the cool shades around the lagoon looked most luxuriant. Our position, on the contrary, was anything but enviable. With