In following the low and rather sandy shore, northward to Cape Capricorn, we passed within a rocky islet and another composed of rock and sand, four miles south-east of the cape, the soundings being there from 8 to 9 fathoms; and at ten o'clock hauled round for Cape Keppel, which lies from Cape Capricorn N. 80° W., ten miles. The shore is low, with some small inlets in it, and sand banks with shoal water run off more than two miles; at six miles out there is a hummocky island and four rocks, one of which was at first taken for a ship. We passed within these, as captain Cook had before done; and at half past two in the afternoon anchored in Keppel Bay, in 6 fathoms soft bottom, three-quarters of a mile from a head on the east side of the entrance. My object in stopping at this bay was to explore two openings marked in it by captain Cook, which it was possible might be the entrances of rivers leading into the interior. So soon as the ship was secured, a boat was sent to haul the seine, and I landed with a party of the gentlemen to inspect the bay from an eminence called _Sea Hill_. There were four places where the water penetrated into the land, but none of these openings were large; that on the west side, in which were two islands, was the most considerable, and the hills near it were sufficiently elevated to afford an extensive view; whereas in most other parts, the shores were low and covered with mangroves. These considerations induced me to begin the proposed examination by the western arm; and early next morning [TUESDAY 10 AUGUST 1802] I embarked in the Lady Nelson, intending to employ her and my whale boat in exploring the bay and inlets, whilst the botanists made their excursions in the neighbourhood of the ship. The depth in steering for the western arm was from 6 to 9 fathoms, for about one mile, when it diminished quickly to 2, upon a shoal which seemed to run up the bay; the water afterwards deepened to 5 and 7 fathoms, but meeting with a second shoal, the brig was obliged to anchor. I then went on in my boat for the nearest of the two islands, passing over the banks and crossing the narrow, deep channels marked in the plan. The two islands are mostly very low, and the shores so muddy and covered with mangroves, that a landing on the northern and highest of them could be effected only at the west end; but a hillock there enabled me to take an useful set of bearings, including Mount Larcom, which is visible from all parts of this bay, as it is from Port Curtis.