27 .-- A thunder-storm during the night, which passed, however, to the other side of the range.

After a gust of wind of short duration, we had some very light showers; so light indeed, as not to interrupt our meat-drying process.
Proceeding on our journey, we ascended the range, and travelled between four and five miles on its level summit, which was covered with open forest, interspersed with thickets of Acacias and Casuarinas.

From the extremity of the range we enjoyed a very fine and extensive view.

Ranges of mountains with conspicuous peaks, cupolas, and precipitous walls of rock, were observed extending at various distances from west by north to north-west.

The most distant range was particularly striking and imposing; I called it "Expedition Range," and to a bell-shaped mountain bearing N.68 degrees W., I gave the name of "Mount Nicholson," in honour of Dr.Charles Nicholson, who first introduced into the Legislative Council of New South Wales, the subject of an overland expedition to Port Essington; and to a sharp peak N.66 degrees W., the name of "Aldis's Peak," in acknowledgment of the kind assistance received from Mr.Aldis of Sydney.