formed principally of Calythrix, and with a more open forest of Cypress pine, white-gum, tea-trees, bloodwood, Livistona palms, Pandanus, with shrubby Terminalias and Coniogetons. The grass was dry, but high and dense; and buffalo tracks spread in every direction, particularly down the creeks, both to the eastward and westward. We followed a westerly creek in all its windings, in order to detect water in one of its rocky water-holes. The rock was shaly, of a greyish colour, like the clay shale of Newcastle above the layers of the coal, but more indurated. Patches of vine brush grew along the banks, and their verdure led me frequently to expect the presence of water. We met, however, only with salt-water, where the mangroves commenced, and had consequently to continue our journey. Here we again came on the foot-path of the natives, which skirted the mangrove swamps, and I followed it for about three miles farther, crossed several dry watercourses, and at last found some pools of rain water, in a small creek. I was fortunate enough to make my latitude by an observation of Regulus, 11 degrees 32 minutes 11 seconds. Dec. 15.--I followed the foot-path of the natives, with the intention of continuing on it, until I came in sight of Mounts Bedwell and Roe. If I had done so, much trouble would have been saved. But, after we had travelled more than three hours, the country became very hilly and ridgy, and I supposed that we were close to those mountains, but were prevented, by the ridges, from seeing them. We went consequently to the northward, and after an hour's riding over a hilly, but openly timbered country, came to an easterly creek, which we followed down, until we found an abundance of water. The upper part of this creek was very scrubby, and with but little grass. I imagined that we had arrived at the west side of Port Essington, and that the creek on which we encamped was probably the Warvi. To ascertain this, I rode down the creek with Charley: it became more open; limited flats of sandy alluvium were clothed with the refreshing verdure of young grass, and with groves of Banksias; its hollows were fringed with large drooping tea-trees. The creek itself was a succession of shady water-holes, out of which, at our approach dashed buffaloes, three and four at a time, shaking their muddy heads, as they scrambled up the steep banks, and galloped to the neighbouring thickets. The stiff sedges of the salt-water, and the salt-water tea-trees, made their appearance about three miles from our camp; and it is probable that the sea was scarcely half a mile farther. High hills rose to the northward, openly timbered, but at their base with patches of scrub, and very stony. Here we heard the distant cooees of natives, which we answered, going in their direction, until we came to a camp, in which we found an old lame man, "Baki Baki," and a short sturdy fellow, "Rambo Rambo;" both of whom knew a great number of English words, and were quite