Captain King, however, has informed me, that in some of these cases, the shape of the hill is really that of a roof, or hayrick; the transverse section being angular, and the horizontal top an edge.) Sketch 1 of some of the islands off Admiralty Gulf (looking southward from the north-east end of Cassini Island, about latitude 13 degrees 50 minutes, East longitude 125 degrees 50 minutes) has some resemblance to one of the views in Peron's Atlas (plate 6 figure 7): and the outline of the Iles Forbin (plate 8 figure 5, of the same series) also exhibits remarkably the peculiar form represented in several of Captain King's drawings (Sketch 2).
The red colour of the cliffs on the north-west and west coasts, is also an appearance which is frequently noticed on the sketches taken by Captain King and his officers.

This is conspicuous in the neighbourhood of Cape Croker; at Darch Island and Palm Bay; at Point Annesley and Point Coombe in Mountnorris Bay; in the land about Cape Van Diemen, and on the north-west of Bathurst Island.

The cliffs on Roe's River (Prince Frederic's Harbour) as might have been expected from the specimens, are described as of a reddish colour; Cape Leveque is of the same hue; and the northern limit of Shark's Bay, Cape Cuvier of the French, latitude 24 degrees 13 minutes, which is like an enormous bastion, may be distinguished at a considerable distance by its full red colour.* (*Footnote.

Freycinet page 195.) It is on the bank of the channel which separates Bathurst and Melville Islands, near the north-western extremity of New Holland, that a new colony has recently been established: (see Captain King's Narrative volume 2.) A permanent station under the superintendence of a British officer, in a country so very little known, and in a situation so remote from any other English settlement, affords an opportunity of collecting objects of natural history, and of illustrating various points of great interest to physical geography and meteorology, which it is to be hoped will not be neglected.

And as a very instructive collection, for the general purposes of geology, can readily be obtained in such situations, by attending to a few precautions, I have thought that some brief directions on this subject would not be out of place in the present publication; and have subjoined them to the list of specimens at the close of this paper.* (*Footnote.