Dec. 10.--Accompanied by Charley, I went in search of a passage over the range. We ascended several hills in order to obtain general views, and found that the level country, over which we had travelled during the last two days, was of less extent than I had anticipated. To the north-east by east, ranges rise with the characteristic outlines of the basalt and phonolite,--in peaks and long stretched flat-topped hills, with undulations openly timbered extending at their base. One valley descended to the north-north-east; another to the northward. The principal range has a direction from south-west to north-east; it is flat on the top, is well grassed and openly timbered; but, to the northward, it becomes scrubby, and also changes its geological character. After having crossed the range--without any great difficulty, with the exception of some steep places--we came on gullies going down to the north-west; and, from the rocky head of one of them, the whole country to the west and northwest burst upon us. There was a fine valley, a flat country, plains, isolated long-stretched hills, and distant ranges; the highest points of the latter bearing 77 degrees E. and 76 degrees W.; and, as I hoped to reach them by Christmas time, I called them "Christmas Ranges." Not being able to discover a good slope on which our bullocks could travel, I descended at once into the gully, and followed it in all its windings; knowing well from experience that it is easier to find a passage up a mountain range than down it. The gully had all the characters of those of the Boyd; the same sandstone rock, the same abruptness, and the same vegetation; excepting, perhaps, a new Grevillea, with pinnatifid leaves and yellowish-white woolly flowers, which we found here. There was no water, except in some small holes full of gum leaves, which had rendered it unfit for use. After proceeding with great difficulty about three miles, we found that the gullies opened into a broad flat valley; in which fields of fat-hen, the Croton shrub, the native Tobacco, Erythrina, fine specimens of flooded-gum, Tristania, and the Moreton Bay ash, were growing in great abundance. Farther down, however, the Bricklow scrub covered the whole valley; the water-course disappeared almost entirely; and we were completely disappointed in our hopes of finding a fine country. Small plains opened on both sides of the valley, surrounded by Bricklow scrub, and with patches of Bricklow scattered over them, in which the Bottle-tree frequently made its portly appearance. A large flight of Wonga Wonga pigeons were feeding on the seeds of various species of Acacia; we shot two of them. No water was to be found in an extent of fifteen miles. The noisy call of the laughing Jackass (Dacclo gigantea) made me frequently ride back and examine more minutely those spots marked by a darker foliage; but the presence of this bird is no certain indication of water, though he likes the neighbourhood of shady creeks.