On October 18th we anchored in Yule's Roads, Moreton Bay in 12 fathoms, sand, about a mile off shore, and remained there for sixteen days. During our stay, some additions were made to render more complete the former survey of this important sheet of water. Buoys were laid down to mark the intricate channels of the north entrance, now preferred for its greater safety to the south entrance, although lengthening by about 50 miles the passage to or from Sydney. The wreck of a steamer, and loss of most of those on board, had not long before caused a great sensation, and forcibly attracted attention to the dangers of the southern entrance.
Moreton Bay is an expanse of water 45 miles in length, and 20 in greatest width, enclosed between the mainland and Stradbroke and Moreton Islands. It is open to the northward, but sheltered on the eastward by the two islands forming that side, which run nearly north and south. The Brisbane river enters the bay about the middle of its western side, and, having been the means of opening up an immense extent of the finest pastoral country, it has conferred a considerable degree of importance upon the place as a harbour, although beset with numerous shoals and narrow winding passages, through which the tides run with great force. The entrance to the river has a depth of only 10 or 11 feet at high-water, consequently, is available for small vessels only; the best anchorage for larger ones is five miles distant. The banks are constantly shifting, and the channel is intricate. When to this is added that the settlement--consisting of the townships of North and South Brisbane, and Kangaroo Point, is situated 14 miles from the river mouth--it was not surprising that a proposal had been made to establish a trading port elsewhere in the bay, so that the wool and other produce of the district, might be shipped direct for England.
PROCEEDINGS THERE.
For this purpose, Cleveland Point (at the south-east side of the bay) had been suggested, and the Colonial Government requested Captain Stanley's opinion on the subject: which is as follows. "This," says he, "is the worst possible place I ever saw for such a purpose; from the proposed site of the town, a low rocky point only a few feet above the level of high-water, projects for more than a mile in the sea; and from both sides of this, mudflats, that become dry at low-water, extend for a very considerable distance. The anchorage off this point must be of necessity in the stream of tide, which, when it sets against even a moderate breeze, causes a heavy sea. And as the point affords no shelter whatever for boats, it will be absolutely necessary to build a breakwater, at least as far out as three fathoms at low-water."
MORETON ISLAND.
Moreton Island, under the lee of which the Rattlesnake was at anchor, is 19 miles in length, and 4 1/2 in greatest breadth. It consists for the most part of series of sandhills, one of which, Mount Tempest, is said to be 910 feet in height; on the north-west portion a large tract of low ground, mostly swampy, with several lagoons and small streams. The soil is poor, and the grass usually coarse and sedge-like. All the timber is small, and consists of the usual Eucalypti, Banksiae, etc. with abundance of the cypress-pine (Callitris arenaria) a wood much prized for ornamental work. The appearance along the shores of the Pandanus or screw-pine, which now attains its southern limits, introduces a kind of intertropical appearance to the vegetation. Among the other plants are three, which merit notice from their efficacy in binding down the drift sand with their long trailing stems, an office performed in Britain by the bent grass (Arundo arenaria) here represented by another grass, Ischaemum rottboellioide: the others are a handsome pink-flowered convolvulus (Ipomoea maritima) one stem of which measured 15 yards in length, and Hibbertia volubilis, a plant with large yellow blossoms.
PORPOISES AT MORETON BAY.
Among the marine animals of Moreton Bay are two cetacea of great interest. The first of these is the Australian dugong (Halicore australis), which is the object of a regular fishery (on a small scale however) on account of its valuable oil. It frequents the Brisbane river and the mudflats of the harbour, and is harpooned by the natives, who know it under the name of Yung-un. The other is an undescribed porpoise, a specimen of which, however, I did not procure, as the natives believed the most direful consequences would ensue from the destruction of one; and I considered the advantages resulting to science from the addition of a new species of Phocoena, would not have justified me in outraging their strongly expressed superstitious feelings on the subject. We observed that whenever a drove of these porpoises came close inshore, a party of natives followed them along the beach, and when a shoal of fish, endeavouring to avoid their natural enemies, approached within reach, the blacks rushed out into the water with loud cries, and, keeping their bag nets close together, so as to form a semicircle, scooped out as many fish as came within reach.
Our seining parties from the ship were usually very successful, but only at one particular time of tide, or during the young flood. Sharks are numerous close to the beach, but are generally small and harmless; one of the natives however had lost his foot at the ankle joint, from the bite of one.
NATIVES.