In the evening, after our return from the river, the weather clouded, but afterwards cleared up with a change of wind from the South-East, which, from its heat, and from the listless sensations it caused, resembled the hot land-wind of Port Jackson: this seems to afford additional ground for the hypothesis that the interior of this immense island is occupied by vast sandy deserts. February 22. On leaving this anchorage it was low water, when the depth was only six inches more than the vessel's draught; but the bottom being of mud, it deepened inch by inch, until we reached four, five, and six fathoms; and upon this depth we sailed the whole day, passing through a cluster, or rather range of sandy islets. In the evening we anchored under one of larger size than usual, about four miles from the mainland, the shores of which had been traced during the day, without losing sight of any part of it; it was still low, and bounded either by dunes of sand, or an impervious forest of mangroves, beyond which no part of the interior could be seen. February 23. The following day was spent in examining a bight, but we were prevented from penetrating to the bottom by the shoalness of the water. We were, however, near enough to see large sheets of water over the mangrove belt that lined the shore, in which many openings were observed that communicated with it. Beyond the lakes was a range of rocky hills, that bounded our masthead view. The bight is fronted by a crowded range of sandy islets, from which we did not extricate ourselves until the next day. Having passed out between two sandy islets, our course was held to the northward, outside of a range of islets, and parallel to the mainland; which was soon afterwards lost to view by trending to the eastward. At one o'clock we passed round a larger and a more elevated island, as well as of a more rocky character than those to the southward; and then steered to the eastward, towards the next projecting point of the main, named after my friend Richard Preston, Esquire, on our way to which we left a small island about one mile to the northward of our track. In the evening, we steered close round Cape Preston, but were disappointed in an attempt to find anchorage near it, from the rocky state of the bottom, so that the night was passed under sail, which, considering the number of low islets scattered about, was running a dangerous risk, and this was increased by encountering a severe squall of wind from the South-East, which blew so insufferably hot that the thermometer stood at 89 degrees, having been at 91 degrees all the previous day. February 24.