Nov. 29.--In reconnoitring the country in the neighbourhood of the camp, I ascended three mountains, and ascertained that there are five parallel ranges, striking from north to south, of which the three easterly ones send their waters to the eastward; whereas the two westerly ones send theirs to the Boyd, the valley of which has a south-westerly direction. To the north of the Boyd, there is a steep mountain barrier, striking from east to west. All these ranges are composed of sandstone, with their horizontal strata, some of which have a very fine grain. Impressions of Calamites were observed in one of the gullies. We also saw two kangaroos. In the water-hole near our camp, there were numerous small brown leeches, which were very keen in the water, but dropped off as soon as we lifted our feet out of it. The hornets also were very troublesome. Recent bush fires and still smoking trees betokened the presence of natives; who keep, however, carefully out of sight. This country, with its dry scrubby ranges and its deep rocky gullies, seems to be thinly inhabited; the natives keeping, probably, to the lower course of Robinson's Creek and of the Boyd. The descent to the easterly waters is much more gentle; water remains longer in the deep rocky basins or puddled holes of its creeks, and the vegetation is richer and greener. Instead of the cypress-pine scrub, the Corypha-palm and the Casuarina grew here, and invited us to cool shaded waters; the Corypha-palm promised a good supply of cabbage. We had a thunder-storm from the southward, which turned from the range to the eastward. The two last days were cloudless and very hot; but, on the ranges, a cool breeze was stirring from the northward.