At 7.30 a.m. steered 328 degrees for two hours through thickets of acacia, cypress, and gum; then entered a grassy country with jam-wattle; at 10.35 passed a granite hill and altered the course to 357 degrees, and at 11.30 ascended a high granite hill, from which many similar hills were visible to the north and east, and a remarkable range of trap hills about thirty miles to the north-north-east; also some smaller trap ranges to the north-west, from ten to thirty miles distant. At noon steered 302 degrees towards the nearest of these ranges, traversing a level plain with brushwood and grass; at 4.45 crossed a small dry watercourse trending west, and at 5.5 bivouacked on a granite hill, with some grass and a fine pool of rainwater in a hollow of the rock. Latitude 29 degrees 3 minutes 14 seconds; longitude 117 degrees 31 minutes. 1st September. Resumed our route at 7.45 a.m.; at 8.45 reached the hills we had been steering for; from the summit there was an extensive view: to the north and west were many trap hills and several dry salt lakes; to the north the country was level for several miles, and then rose into a low range of granite hills, covered with brushwood and grass; at 9.20 steered 230 degrees over level country with dense thickets of acacia; at noon the country became more open; at 1.0 passed some small dry salt lagoons, the country more open and with some grass, and at 3.0 camped at the foot of a granite hill, with good grass and some water oozing out of a cleft in the rock. Latitude 28 degrees 50 minutes 44 seconds; longitude 117 degrees 20 minutes. 2nd September. Leaving the bivouac at 7.40 a.m., steered 330 degrees over a succession of grassy granite hills, with small watercourse trending to the west; at 12.40 p.m. came on a party of four aboriginals, who hastily decamped, leaving their spears and shields behind in the hurry of retreat; they appeared to be of rather small stature, and somewhat darker in colour than the blacks near the Swan River. Observing a remarkable hill bearing 312 degrees about twenty miles distant, steered for it; the country became more level, with grass and brushwood; at 3.5 turned north to a steep granite hill, crossing a dry watercourse thirty yards wide and sixteen feet deep trending north-west; at 4.40 halted in a gully in the granite range, and obtained water by digging among the rocks. Latitude 28 degrees 34 minutes 9 seconds; longitude 117 degrees 2 minutes. 3rd September.