After travelling about five miles, we saw a hill to the north-east, and, when we came almost abreast of it, the river turned to the eastward, and a wild field of broken basaltic lava rendered it impossible for us to follow its banks.

The black rough masses of rock were covered with thick scrub, in which I observed numerous bottle trees with the platanus leaf.

Keeping to the westward of the scrub, I followed a creek which farther on divided in a chain of ponds, into which the waters of the field of basalt, as well as of the basaltic ridges to the westward of it, collected.

These ridges were perfectly level at their summits, and were connected with a table land which extended far to the west.

At their foot sienite, quartz rock, and leptinite, were observed.
After turning round the field of lava to the eastward, we entered into a large flat, with patches of narrow-leaved tea tree, with reedy swamps and fine flooded-gum trees, and made our camp at a strong running brook, without trees, but densely surrounded with reeds, ferns, and pothos.