The ranges were composed of a Psammite, which was frequently baked, probably by neighbouring out-bursts of igneous rock.

Several familiar forms of plants were discovered; also a new Eucalyptus, with a glaucous suborbicular subcordate leaf, and the bark of the rusty gum: a stunted or middle-sized tree, which grew in great abundance on the ranges.

We passed a fine large but dry Casuarina creek, coming from the westward, with a broad sandy bed.

A large tree, with dark green broad lanceolate stinging leaves, grew on its banks; it resembled the nettle tree, but belonged to neither of the two species growing in the bushes of the east coast.
Our last day's travelling had not advanced us more than five miles in a straight line, and we had not made any northing, our latitude being again 18 degrees 59 minutes; but we had left the mountains behind us, and had travelled, during the latter part of the stage, over well grassed, openly timbered flats.

The ranges on the left side of the river extended several miles farther, but gradually sunk into a level country.
[Note 1: The following description of the fossiliferous limestone of the Burdekin, was communicated to me by the Rev.W.B.Clarke, F.G.S.
This rock consists of a semi-crystalline, greyish-brown marble, very like some varieties of Wenlock limestone.
The most conspicuous fossil is a coral, which appears to belong to the family of Cyathophyllidae.