Mr. Roper and Brown, upon an excursion after ducks, which were very numerous on the lagoons, met with Blackfellows, who were willing to accost Brown, but could not bear the sudden sight of a white face. In trying to cross the valley, my course was intercepted every way by deep reedy and sedgy lagoons, which rendered my progress impossible. I saw, however, that this valley was also floored with a sheet of lava hollowed out into numerous deep basins, in which the water collected and formed the lagoons. May 5.--I went with Charley to reconnoitre the upper part of the reedy brook, with a view to find a passage over the table land to the westward; at the same time I sent Mr. Roper and Brown to trace the river through the lagoons, and to examine whether there was any connection between them. I followed the base of the basaltic table land, along which the brook came down, and, after a two miles' ride on its banks, through oak trees, low fern trees, and several bush trees, found that it came down a valley deeply cut into the table land. The floor of the valley was of basaltic rock, and its steep slopes were covered with boulders of the same formation. The water ran in two distinct beds through the fissures, hollows, and caves of the rock. As our horses could not travel over the sharp edges of the rock without injuring their feet, we ascended the table land, and rode to the northward about four miles, and then came on plains, in which we distinguished a meandering band of green verdure, which proved to be the same brook we had left, or one of its head waters. We followed it through a series of plains, from one of which a blue mountain was visible to the north-west. I called it "Mount Lang," after Dr. Lang, the distinguished historiographer of New South Wales. Smoke was seen to the westward. At the right side of the brook, a stream of lava bounded the plains, and was, as usual, covered with dense scrub. Box, with occasional patches of narrow-leaved tea trees, grew along the plains. The forest was very open, and principally consisted of narrow-leaved Ironbark; the grass in the forest and on the plains, was of the best description. Finer stations for the squatter cannot exist.