The entrance of this branch is divided from the south-west arm by several rocky points; the land over them high and steep; between which are some small sandy bays; and right off the mouth of this arm is a very high rocky island, of but small extent; its eastern end is very high and perpendicular; this island is a good mark, for any part of the bay may be known, with certainty, by the situation of it, which the chart will point out. If a stranger were coming in here for shelter in a gale of wind, I would recommend his pushing up the south-west arm, and steering in for the island, which is now called Mount Elliot, from its similarity to the north end of Gibraltar Rock. You may pass on either side, but the south side is fairest for going up the south-west arm; keep mid-channel between the island and south shore: this shore is so bold that you may run within two cables length of it. In your way up you will perceive a branch on the north side, which runs up north-west; when thus high, you are above a bank or middle ground, on which the least water is 16 feet; you may, by keeping near the shore, pass on either side of this shoal, which has gradual soundings to it; the south side has most room and deepest water; the north side has five fathoms: when above this, you may keep in the middle, if you wish to go higher, and the least water will be five or six fathoms for several miles higher: from this south-west arm several branches extend, most of which have good depth of water, but the chart will be the best guide. If you wish to enter the north-west branch, enter it by keeping the larboard shore on board, and for some distance up, as from the starboard shore a shoal extends one-third of the distance over. After having rested a few days, I determined not to lose any time, but go immediately and make a survey of Botany-Bay, while the weather was cool and pleasant. Towards the end of September, two boats with provisions, tents, etc. were got ready, and dispatched round, under the care of Mr. Keltie, the master of the Sirius, by whom, and Mr. Blackburn, the master of the Supply, I was assisted in my work at Botany-Bay. A few gentlemen of the settlement having signified a wish to accompany me, the party resolved to walk over and meet the boats there; this route being now well known, and the path well trodden, it was not an unpleasant walk. We joined the boats about noon, and found our tents pitched.