leguminous ironbark, and sterculia were scattered on the hills, with much triodia and little grass.  After crossing the highest ridge at 11.0 a.m. the sandstone strata were variously inclined, but generally to the west or north-east at high angles, except on the immediate bank of the McArthur, where the sandstones were horizontal.  To the south-west of our route the country rose into stony hills of very barren aspect, but to the north the country appeared to be wooded.

Latitude by Vega 16 degrees 25 minutes 11 seconds.

5th August.

The country to the south-east being very rocky and broken, we followed down the river, leaving the camp at 7.20 a.m., the general course north-east; the sandstone hills rose abruptly from the bank of the river, the sandstone rock being frequently worn away in a partial manner, so as to leave isolated columns sometimes three feet in diameter and thirty feet high; a few miles below the camp a few pools of water were seen, but there was no grass near them, and we continued our route for four hours, and camped at a shallow pool with a small patch of grass on the bank of the river; the principal channel of the river was only twenty-three yards wide, but in times of flood the side channels carry off the greater portion of the water, which rises nearly forty feet; considerable quantities of mussel-shells lay at the old camps of the blacks along the bank of the river.

Latitude by meridian altitude of the sun 16 degrees 18 minutes 41 seconds; longitude by lunar distances 136 degrees 21 minutes.

6th August.

At 7.25 a.m. resumed our journey on a south-east course, over a miserable sandy country, with stunted eucalypti, grevillia, and triodia; at 11.0 reached a range of broken sandstone hills, which, with great difficulty and risk to the horses, we crossed in an east-south-east direction; but though the direct distance was only three miles, the deep ravines and rocks delayed us for three hours, and we were glad to emerge into an open valley, in which we camped at 2.30 p.m.; in the deep ravines of the sandstone hills water was abundant, but inaccessible for our horses, from the steep and rocky character of the country; a few small white-gum trees and triodia formed almost the entire vegetation; the rock is gray sandstone in horizontal beds with cleavage lamina, which varied so much in angle and direction that no general direction could be assigned, the cleavage of the upper beds often being the reverse of those immediately below them; the beds were from one to four feet thick, and the lamina half an inch to two inches, the grain very even and moderately fine.

Latitude by Vega 16 degrees 24 minutes 20 seconds.

7th August.

Resumed our journey at 7.10 a.m. on an average east-south-east course, along the foot of a rocky range of sandstone hills; at 8.30 came on a deep rocky creek, with long pools of water trending to the north; as our horses required rest, and the country ahead appeared very barren and rocky, we encamped.