15TH JUNE.--In following down this chain of ponds, we found its channel became a well-formed river, with abundance of water in it, a few miles below our camp. The course thus far was northward; and I saw in one part of it rocks dipping to the westward. I was in expectation that it would have continued northward, when it suddenly turned towards the S.S.W. I thereupon crossed it, and resumed my N.W. course. My path was thus again crossed by our river flowing northward: we had then travelled 121/2 miles, and I encamped on its banks. The whole of the day's journey, with little exception, had been over heavy sand, and, but for the rain that had fallen, it must have greatly distressed the horses and oxen. As it was, they got over it wondrous well. In a pond of this river, Mr. Stephenson caught a great number of the harlequin fish, a circumstance almost proving that this was a tributary to the Maran. We found this day a new narrow-leaved TRISTANIA[*], thirty feet high, with bark thick, soft, and fibrous. A smooth narrow-leaved variety of ACACIA HOLOSERICEA was loaded with spikes of crooked sickle-shaped pods. Among the herbage was observed the TEUCRIUM ARGUTUM of Brown; and the XEROTES LEUCOCEPHALA grew in the light dry sand. Novelty in the plants, animals, and fishes, was now to be expected; the weather was cool and pleasant, and our travelling equipment tolerably efficient. Thermometer, at sunrise, 30 deg.; at 4 P. M., 58 deg.; at 9 P. M., 46 deg. (XXXVII.). Height above the sea, 1827 feet. [* T. ANGUSTIFOLIA (Hook. MS.); foliis angusto-linearibus mucronatoacuminatis supra glabris subtus subsericeis marginibus arcte revolutis, paniculis terminalibus folio brevioribus calycibusque incano- tomentosis. These specimens were in fruit. It is very distinct from every other species.]