In the afternoon they made some further progress with the sloop, anchoring for the night on a soft muddy bottom.
On the following morning they got under weigh with a flood tide, and a moderate breeze from the northward. In their progress, they passed two islands, of from three to four miles each in circuit. The northernmost was the largest, and seemed well covered with wood, the greater part of which was probably mangrove, the island being nearly level with the water's edge. The foliage of the trees upon the southern island was equally dark and luxuriant with this, but the interior part of it was higher. There were two other smaller islands, nearly on a level with the first, and covered with wood, but the southernmost was very small.
In passing between the two islands they had deep water; but on its suddenly shoaling they tacked and stood to the westward. In this situation the entrance from Moreton Bay was open, the south side of which bore N 68 degrees E six or eight miles, and the west side of what will now be Moreton Island bore N 2 degrees W. Another island. apparently larger than either of the four above mentioned, bore from the same place from S 55 degrees to 34 degrees E at the distance of about five miles. Reckoning the northernmost of the four islands to be the first in number, they made their course good for the third island, after tacking; and the water deepened almost immediately to six fathoms.
At this time their attention was much attracted by a party of natives from these islands, who appeared to be standing up in their canoes, and pulling toward them, with all their strength, in very regular order. They seemed to have long poles or spears in their hands, with which also they appeared to be paddling, the whole of them shifting their hands at the same instant, after the manner of the South Sea islanders. As about twenty of them were counted, and seemed to be coming on with much resolution, our people prepared for whatever might be the event. The sloop was put under easy sail, her decks cleared of every incumbrance, and each man was provided with a competent number of musket balls, pistol balls, and buck shot, which were to be used as the distance might require; for it was intended that not a man should escape if they commenced an attack.
Being thus prepared, they bore away toward them, finding that with all their exertions they did not approach much nearer to the vessel. But what was their surprise on discovering, that, instead of advancing in canoes to attack them, they were standing upon a large flat, that surrounded the third island, driving fish into their nets, and that they had but two canoes among them. They were standing in a line, splashing in the water with long sticks, first for some time on one side, and then all shifting to splash on the other. Thus this hostile array turned out to be a few peaceable fishermen: peaceable indeed; for on the approach of the vessel they sunk their canoes upon the flat, and retreated to the island, where they made their fires.
The flood tide having ceased to run, they anchored at noon, and by the sun's meridional altitude, in 27 degrees 27 minutes 16 seconds south latitude. The third island, on which the natives were, bore W 4 degrees S one and a half or two miles distant, and the centres of the two northern ones N 40 degrees and N 15 degrees W. The entrance from Moreton Bay bearing N 68 degrees E from this anchorage, corroborated its latitude by the observation of the 14th, which was taken on the sea side of it although it differed considerably from that given by Captain Cook. This difference may perhaps be thus accounted for. That great navigator finding, by the meridional observation taken on the day following the evening on which he passed this part of the coast, that a northerly current had prevailed in the last twenty-four hours, probably allowed a proportional part of it, to correct the situation of Point Lookout, as given by the log; whereas in reality the northerly current might have commenced only at the time that he opened the Moreton Bay entrance, and became exposed to the outset from it. And it was by no means improbable, that, instead of a northerly, he might have had a southerly set, from the previous noon, when the latitude was 27 degrees 46 minutes to the time when he opened the entrance; in the same manner as it had prevailed the day before; when the observation was 17 minutes south of the log.
From the situation of the sloop at this anchorage, Glass-House-Bay seemed to be closed round, except at one small opening which bore S 27 degrees E. To turn up this opening, they got under sail as soon as the ebb tide slacked. On standing near the south part of the shoal that appeared to surround the island to which the natives had retired, one of them came down abreast of the sloop, making the same gestures, and running backwards and forwards, as others had done before; but little attention was paid to him, Mr. Flinders being more intent on getting as far up the bay as possible while the tide favoured him. A little before midnight he was obliged to anchor, finding that the deep water had contracted into a narrow channel.
On the following day Mr. Flinders landed upon an island that lay in his passage, with instruments for taking angles, and observing the latitude. Footsteps of dogs, and those recent, were numerous upon the beach; but traces of men were scarcely visible: there were, however, several fire-places, and many other marks of the island having lately been visited. This island was two or three miles in circumference. The central part was higher than the skirts, and was covered with a coat of fine vegetable mould of a reddish colour. On the SE side of the island this elevated part descended suddenly in a steep bank, where the earth was as red as blood; and, being clayey, some portions of it were nearly hardened into rock. The trees upon it, among which was the new pine, were large and luxuriant. The exterior part of the island upon the west side was a flat, over which the tide seemed to rise, and was abundantly covered with large mangrove trees. On the SW and NE sides it was mostly low and sandy, and here the palm nut tree was produced. Probably these nuts formed the principal inducement for the natives to visit this island; and there was abundant testimony under the trees that they were not suffered to fall off and rot. They met with some boughs so ranged as to keep off the southerly winds; and from the fireplaces which they were placed to defend, it was inferred that not less than five or six natives had made this their place of residence, probably a temporary one only, as they did not meet with any huts regularly constructed.
The black and the white cockatoo, the beautiful lilac-headed paroquet, and the bald-headed mocking bird of Port Jackson, were seen here; but there were not any marks of resident quadrupeds, rats excepted.
The latitude of this island, deduced from the sun's altitude taken at noon, was 27 degrees 34 minutes 59 seconds S making the depth of this bay, from Cape Moreton, to be thirty-four miles; for beyond this island the bay was contracted into a river, of considerable width indeed, but it appeared to be so shoal, or, if there was any deep channel, to be so difficult of access, that Mr. Flinders gave up all idea of pursuing it further, especially as the winds were obstinately adverse: he therefore returned on board, with the intention of running into the river near the Glass House peaks, there to lay the sloop on shore, and procure a supply of fresh water, if a convenient situation could be found.