Nov. 26.--When we were waiting for our bullocks, four emus came trotting down the slope towards the camp. Messrs. Gilbert, Roper, Murphy, and Brown, having their horses ready, gave chase, and, after a dangerous gallop, over extremely rocky ground, succeeded, with the assistance of our kangaroo dog, Spring, in securing one of them. When Charley returned to the camp with the bullocks, he told us that he had found these emus walking amongst the bullocks, and that he had struck one of them with his tomahawk. On our road to the water, which I had found on my reconnoisance, about seven miles W.N.W., under a still higher range, rising at the right of Robinson's Creek, we started a herd of eight kangaroos, when our horsemen, assisted by Spring, were again successful in taking one of them. Nov. 27.--A thunder-storm during the night, which passed, however, to the other side of the range. After a gust of wind of short duration, we had some very light showers; so light indeed, as not to interrupt our meat-drying process. Proceeding on our journey, we ascended the range, and travelled between four and five miles on its level summit, which was covered with open forest, interspersed with thickets of Acacias and Casuarinas. From the extremity of the range we enjoyed a very fine and extensive view. Ranges of mountains with conspicuous peaks, cupolas, and precipitous walls of rock, were observed extending at various distances from west by north to north-west. The most distant range was particularly striking and imposing; I called it "Expedition Range," and to a bell-shaped mountain bearing N. 68 degrees W., I gave the name of "Mount Nicholson," in honour of Dr. Charles Nicholson, who first introduced into the Legislative Council of New South Wales, the subject of an overland expedition to Port Essington; and to a sharp peak N. 66 degrees W., the name of "Aldis's Peak," in acknowledgment of the kind assistance received from Mr. Aldis of Sydney. We then descended, with great difficulty into a broad valley, bounded on either side by fine slopes and ridges, openly timbered with silver-leaved Ironbark. On the small well-grassed flats along the watercourse, the flooded-gum and apple-trees grew to a considerable size. The morning was cloudy, with occasional drops of rain; but it cleared up towards noon, and, near sunset, a wall of dark clouds rose in the west, over the ranges. Thunder-storms very generally come with westerly cloudy weather, with north-westerly, and northerly winds. We busied ourselves in extracting the oil from the skin of the emu: this operation was performed by suspending it on sticks before a gentle fire, the oil dripping from it into a shallow vessel. It is of a light amber colour, and is very useful in oiling the locks of our fire-arms; it has been considered a good anti-rheumatic, and I occasionally used it for that purpose.