5TH SEPTEMBER.--The cooler air reminded us that we had returned to a more elevated region than that on the Belyando. This morning heavy clouds of cumulostratus promised more rain, and gave a cool day for the last effort of the jaded animals, which the driver doubted could not be driven much farther. I cut off all the roundabouts and steep pulls, where this could be done, by laying logs across such gullies as we were obliged to cross. We thus saw more of the river and its romantic scenery, which well deserved the name of a painter. No natives, nor columns of smoke, were seen this day; and I concluded that they concentrated the tribe yesterday, and had departed this morning. We finally took up a very snug position near the pyramids, in the very gorge of the mountain valley by which we had approached this country; camp XLVI. being within sight, and the swamp with the spring, at the foot of this hill on which we now encamped, as a camp of occupation during my intended absence, on an excursion with horses only, to the north-west. The genial influence of spring had already induced many plants to show their colours, which had formerly been passed by us unnoticed. In the sandy soil, grew the purple- flowered CHLOANTHES STOECHADIS; THE ACACIA CUNNINGHAMII; the pink- flowered CRYPTANDRA PROPINQUA; and a species of CALYTRIX; these two forming small shrubs, the latter from four to six feet high. A very handsome new BORONIA, with large white and red downy flowers, here first appeared in the open forest.[*] The rocks were partly covered with a small white-flowered shrub, which proved to be a new species of LEPTOSPERMUM allied to L. PUBESCENS, but perfectly distinct.[**] At the foot of them, was found the AOTUS MOLLIS, a little hoary bush, with yellow black flowers; a santalaceous plant like CHORETRUM, forming a tree fifteen or twenty feet high: the CALLITRIS GLAUCA or CUPRESSUS GLAUCA of ALL. CUNN. (in Hook. Herb.). A small tree, about twenty-five feet high, proved to be a new species of Acacia, or possibly a variety of A. CUNNINGHAMII, but handsomer, with larger phyllodia, longer spikes of flowers, and everywhere clothed with a soft velvety pubescence.[***] Thermometer, at sunrise, 33 deg.; at noon, 68 deg.; at 4 P. M., 64 deg.; at 9, 40 deg.;-- with wet bulb, 31 deg.. [* B. ERIANTHA (Lindl. MS.); foliis pinnatis cum impari 1-3-jugis, foliolis glaberrimis linearibus retusis emarginatisque laevibus, pedunculis solitariis unifloris axillaribus foliis brevioribus, sepalis triangularibus glabris, petalis tomentosis, staminibus 8.] [** L. SERICATUM (Lindl. MS.); foliis obovatis linearibus planis obtusis aveniis impunctatis utrinque sericeis, calycibus tomentosis dentibus acutis persistentibus.]