After proceeding six miles, we reached the borders of an extensive open tract, named Mulluba. It could scarcely bear the usual designation of plain (the term applied in New South Wales to almost all land free from trees) for the undulations were as great as those which occur between London and Hampstead, and, indeed, the whole territory bore a remarkable resemblance to an enclosed and cultivated country. The ridges, of the kind already described, I observed in directions, both with the slopes, and across them, exactly resembling furrows in fallow land. Trees grew in rows, as if connected with field enclosures, and parts, where bushes or grass had been recently burnt, looked red or black, thus contributing to the appearance of cultivation. The soil was, indeed, well worthy of being cultivated, for it consisted of a rich black mould, so loose and deep that it yawned in cracks, as if for want of feet to tread it down. It appeared very probable however that in wet weather such parts of the country might be too soft for the passage of carts. I then supposed the ridge on our left might be that called Hardwick's range, by Oxley; its general direction being about 20 degrees westward of north. We at length reached the remarkable opening in that range, which I had observed from Perimbungay, and passing through it, over a narrow flat, we arrived at a low woody country westward of these ranges. Having now travelled sixteen miles, I was anxious to encamp here, but we could not, at first, find any watercourse; and one small, dry channel appeared to be the only line of drainage in wet weather from the extensive open country of Mulluba. It struck me at the time that much might be done to remedy the natural disadvantages, whether of a superfluity of water lodging on the plains in rainy seasons, or of too great a scarcity of moisture in dry weather. Channels might be cut in the lines of natural drainage, which would serve to draw off the water from the plains, and concentrate and preserve a sufficient supply for use in times of drought, when it would not be obtained elsewhere. VIEW FROM MOUNT YDIRE. We had followed the dry channel for about a mile and a half in search of water, without much prospect of finding any, when we came to a rocky part, which still contained, in several pools, more indeed than sufficient for all our wants, and here we gladly encamped. The range no longer intercepted our view to the westward, and I lost no time in ascending one of its pointed summits, named Ydire, accompanied by Mr. White, and our guide, Mr. Brown. From this hill, the view extended far and wide over the country to the westward. The most conspicuous feature in that landscape was a lofty flat-topped hill in the middle distance, being somewhat isolated, and on the western border of a plain which extended from our position to its base. The native name of this was Boonalla. TANGULDA.