Near the North-West extremity of the Cape just at high-water mark, I noticed some pumice stones, small and not having the appearance of belonging to a recent eruption, which seems to agree with the opinion expressed by the Reverend W.G. Clarke in the Tasmanian Journal. He considers, and I think justly, that its origin may be in the Solomon, New Caledonia, or some other of the volcanic islands to the east of Australia, from whence it drifted, as it has been found on all parts of the coast, to the southern portion of which it has doubtless been carried by the current. Captain Wickham did not remark any above the entrance of the river he explored, on the western side of the bay, which bears out the opinion I have above expressed. A curious fact, mentioned by Mr. Clarke is, that one piece, perfectly water-worn, was found upon a high mountain, full twenty-five miles inland from the mouth of Clarence River. Was this carried thither by one of the natives, or does it indicate that pumice drifted to this part of the continent at a time when, if ever, it was on a level with the ocean? I further remarked in this place, many of the land shells common to this and other parts of the coast. There was great difficulty in attaining the loftiest point of the Cape, which I found to be two thousand feet high. From thence our party commanded a view of the whole of the bay, and discovered that we were, strictly speaking, standing upon an island, a small creek winding round the southern foot of the high land, and connecting the bays on the eastern and western side of Cape Upstart. The break in the hills seen by Captain King, and supposed to indicate an opening, has been already alluded to. On reaching the summit I found that this was merely a valley, containing the head of the plain which stretched from the shores of the bay. On its southern side rose Mount Abbott; but one of the most remarkable features on the coast is Mount Elliott, lying about forty-five miles West and by North from our position. It is a long level hill, with a peak at its northern extremity. All those in the neighbourhood, as far as I could judge with the spyglass, seemed to be of the same formation with Cape Upstart. We found this a convenient stopping-place for vessels making the inner passage, wood and water being easily procured. The latter is found in a considerable reservoir fed by two streams from the high land of the Cape, lying a mile within the mouth of the bay. From appearances, I should say it would yield an abundant supply at any season of the year. NATIVES SURPRISED.