At 7.25 a.m. resumed our journey on a south-east course, over a miserable sandy country, with stunted eucalypti, grevillia, and triodia; at 11.0 reached a range of broken sandstone hills, which, with great difficulty and risk to the horses, we crossed in an east-south-east direction; but though the direct distance was only three miles, the deep ravines and rocks delayed us for three hours, and we were glad to emerge into an open valley, in which we camped at 2.30 p.m.; in the deep ravines of the sandstone hills water was abundant, but inaccessible for our horses, from the steep and rocky character of the country; a few small white-gum trees and triodia formed almost the entire vegetation; the rock is gray sandstone in horizontal beds with cleavage lamina, which varied so much in angle and direction that no general direction could be assigned, the cleavage of the upper beds often being the reverse of those immediately below them; the beds were from one to four feet thick, and the lamina half an inch to two inches, the grain very even and moderately fine. Latitude by Vega 16 degrees 24 minutes 20 seconds. 7th August. Resumed our journey at 7.10 a.m. on an average east-south-east course, along the foot of a rocky range of sandstone hills; at 8.30 came on a deep rocky creek, with long pools of water trending to the north; as our horses required rest, and the country ahead appeared very barren and rocky, we encamped. 8th August. Steering a south-east course from 6.50 a.m., crossed a sandy tableland, with paper-bark and melaleuca with broad leaves; passed a small creek with pools trending north-east, and at 10.0 a low rocky ridge; then descended into a wide valley, with melaleuca and a few box-trees. At 1.25 camped on a large sandy creek with two channels ten yards wide, with low sandy banks; one channel was dry, but the other had a few small pools in it; a line of melaleuca and flooded-gum trees marked its course along the valley. When in flood the waters of the creek are 100 yards wide and ten to fifteen feet deep. The grass was inferior, but from having been burnt had grown up fresh and green. Latitude by a Trianguli Australis 16 degrees 34 minutes 44 seconds. IRON TOOLS USED BY NATIVES. 9th August.