See hereafter.) The line of the main coast from Point Dale to the bottom of Castlereagh Bay, where Captain King's survey was resumed, has also a direction from south-west to north-east, parallel to that of the ranges of islands just mentioned.

The low land near the north coast in Castlereagh Bay, and from thence to Goulburn Islands, is intersected by one of the few rivers yet discovered in this part of Australia, a tortuous and shallow stream, named Liverpool River, which has been traced inland to about forty miles from the coast, through a country not more than three feet in general elevation above high-water mark; the banks being low and muddy, and thickly wooded: And this description is applicable also to the Alligator Rivers on the south-east of Van Diemen's Gulf, and to the surrounding country.

The outline of the Wellington Hills, however, on the mainland between the Liverpool and Alligator Rivers, is jagged and irregular; this range being thus remarkably contrasted with the flat summits which appear to be very numerous on the north-western coast.
The specimens from Goulburn Islands consist of reddish sandstone, not to be distinguished from that which occurs beneath the coal formation in England.

On the west of these islands the coast is more broken, and the outline is irregular: but the elevation is inconsiderable; the general height in Cobourg Peninsula not being above one hundred and fifty feet above the sea, and that of the hills not more than from three to four hundred feet.
On this part of the coast, several hills are remarkable for the flatness of their tops; and the general outline of many of the islands, as seen on the horizon, is very striking and peculiar.

Thus Mount Bedwell and Mount Roe, on the south of Cobourg Peninsula; Luxmoore Head, at the west end of Melville Island; the Barthelemy Hills, south of Cape Ford; Mount Goodwin, south of Port Keats; Mount Cockburn, and several of the hills adjacent to Cambridge Gulf, the names given to which during the progress of the survey sufficiently indicate their form, as House-roofed, Bastion, Flat-top, and Square-top Hills; Mount Casuarina, about forty miles north-west of Cambridge Gulf; a hill near Cape Voltaire; Steep-Head, Port Warrender; and several of the islands off that port, York Sound, and Prince Regent's River; Cape Cuvier, about latitude 24 degrees; and, still further south, the whole of Moresby's flat-topped Range, are all distinguished by their linear and nearly horizontal outlines: and except in a few instances, as Mount Cockburn, Steep-Head, Mounts Trafalgar and Waterloo (which look more like hills of floetz-trap) they have very much the aspect of the summits in the coal formation.* (*Footnote.