In a W.by S.direction from these, and distant four or five miles, is another peak, to which I gave the name of "Macarthur's Peak," after Mr.William Macarthur, of Cambden.

All these peaks are composed of Domite; and Roper's and Scott's Peaks are surrounded by a sandstone formation, covered with a dense low scrub.
I passed between Roper's Peak and Macarthur's Peak, to the northward, and came in sight of another very remarkable cone, which I afterwards called Calvert's Peak, after my fellow-traveller, in consequence of his having suffered severely in its neighbourhood, as I shall soon have to mention.
I traced a creek at the east side of Macarthur's Peak to its head, and went down another on its west side to a large plain, which seemed to be limited to the westward by openly-timbered ridges.

As we advanced into the plain, a most remarkable and interesting view of a great number of peaks and domes opened to the N.N.W.and N.W.There seemed no end of apparently isolated conical mountains, which, as they resemble very much the chain of extinct volcanos in Auvergne, might easily be mistaken for such; but, after changing the aspect a little, they assumed the appearance of immense tents, with very short ridge-poles.

To the most remarkable of them, which had the appearance of an immense cupola, I gave the name of Gilbert's Dome, after my companion.

Far to the N.N.W.a blue peak was seen rising behind a long range of mountains, and from the latter a valley seemed to descend to the W.N.W.A round hill, of a reddish colour, to the south or south-west of Macarthur's Peak, was called Mount Lowe, after R.Lowe, Esq.