September 1.--We pursued our course to the east-north-east, winding through rich valleys bounded by lofty forest hills for seven miles; when by a gentle descent we entered a rich and spacious vale, bounded on the east by very high hills, and on the west by others less elevated. At twelve miles we stopped at some ponds near the centre of the vale. The hills were very stony, of various species--granite, freestone, and pudding-stone; they were however well covered with grass, and quite clear and open; the valleys and levels excellent, with good timber, chiefly apple tree, box, and gum. On the higher ridges of the hills, and occasionally on their sides, were many fine cypresses: there was nothing grand or imposing in the scenery; but it was simple and attractive from its richness and extent: the hills sometimes rose into singular forms which were continually changing in our progress, and appeared well calculated to afford an ample range of sheep pasture. The extensive vale in which we stopped was named Goulburn Vale, in honour of the under Secretary of State for the colonies. September 2.--Our expectations of finding a river to the eastward, were this day verified: after passing for eleven miles across this beautiful vale, we came to a deep and rapid stream running to the north, through the valley whose eastern side it waters: finding it too deep to be forded, we constructed a bridge across a narrow part of it, by felling such large trees as would meet, by which the baggage was taken over: the horses were swum across. One of the men, foolishly attempting to swim over on a horse, nearly paid for his imprudence with his life: as he could not swim, he was carried down the stream near a quarter of a mile, and was several minutes under water. His body being providentially washed across a log, was the means of his preservation. It was late in the afternoon before our passage across was effected, so that we halted on the banks. This was the largest interior river (with the exception of the Macquarie and Castlereagh), which we had yet seen. It would be impossible to find a finer or more luxuriant country than it waters: north and south, its extent is unknown, but it is certainly not less than sixty miles, whilst the breadth of the vale is on a medium about twenty miles. This space between the bounding hills is not altogether level, but rises into gentle inequalities, and independently of the river is well watered; the grass was most luxuriant; the timber good and not thick: in short, no place in the world can afford more advantages to the industrious settler, than this extensive vale. The river was named Peel's River, in honour of the Right Hon. Robert Peel. A great many new plants were found to-day and yesterday, chiefly of the orchis tribe [Note: Orchideae of Juss. and BROWN.]: we saw numbers of the ornithorynchus, or water mole, in the river, also a few turtle: we were not successful in obtaining any fish,