2D MAY.--There was a decided difference between the river we were now upon, as well as the country along its banks, and the large river by which we had travelled so far. This was undoubtedly but a small tributary, as its direction seen this day showed, being from the westward, while its waters, meandering in various narrow channels amongst plains, reminded us of some of the finest parts of the south. Which was the principal channel, and which to cross, which to travel by, was rather difficult to determine. The country was very fine. These water courses lay between finely rounded grassy slopes, with a few trees about the water's edge, marking their various courses at a distance. A considerable breadth of open grassy plain, intervened between this river and the woods back from it. At length, sloping stony bergs came near the river's bed, but there the smooth naked water-worn clay was the best ground we could have for wheels, and we thus hugged each bend of the river, passing close to the channel. I hoped thus to find plains on the next change of the river's course. And so it turned out for some way, but the receding bergs guided me, even when only seen at a considerable distance, in shaping my course. Keeping my eye on their yellow slopes, I travelled far along a grassy flat which brought me to a lake containing water like chrystal, and fringed with white lotus flowers. Its western shore consisted of shelving rock. An immense number of ducks floated on its eastern extremity. From this lake, following a grassy flat to the N. W., we at length reached the river, or rather its bed, seared into numerous channels. The lake, and long flat connected with it, appeared to me more like the vestiges of a former channel, than as the mere outlet of surplus waters; nor did it seem that the water is now supplied from the floods of the river. I followed this a few miles further, and then encamped just beyond, where much gravel appeared in the banks. While the men were erecting the tents, I rode some miles to the westward, and found an open iron-bark forest covering it, with much luxuriant grass. This was rather peculiar, as compared with any other part passed through. It was also undulating; and, from a tree ascended by Yuranigh, it was ascertained we were approaching mountains, as he saw one which bore 77 deg., also a hill to the eastward, in which latter direction (or rather in that of 333 deg.), he saw also an open country. Thermometer, at sunrise, 47 deg.; at 4 P. M., 62 deg.; at 9 P. M 57 deg.; mean height above the sea, 694 feet.