6.15 a.m., resumed our journey and traversed an inferior country of sandstone and porphyry; box, silver-leafed ironbark, and triodia characterized the vegetation; in crossing one of these gullies, in which were some pools of water, Bowman's horse fell over the bank into the pool, and he got some severe bruises; at 10.15 came on the river, where it ran over a ledge of rocks forming a succession of rapids, below which it spread out into a broad sheet of sand a quarter of a mile wide, and turned to the south. As Bowman had fallen some distance in the rear, I selected the first suitable spot, and at 11.0 encamped, and shortly after Mr. H. Gregory came in with Bowman to camp. On the bank of the river we saw two black gins, who climbed a tree on our approach, and in the afternoon came to the camp with an old man, and after some unintelligible conversation departed; they had neither clothes or weapons, except a throwing-stick of the same form as those used by the blacks of the southern shore of the Gulf of Carpentaria. The geological character of the country has been sandstone, much altered by contact with porphyry which has been forced through it; both dip and strike are confused, and could not be ascertained to have any general angle or direction, except in the bed of the river, where the strata dipped 10 degrees to the north, but in the hills, on the left bank below the camp, the strata was horizontal; the river is now 150 yards wide at the narrowest parts, a small stream of water, one foot deep and ten to twenty yards wide, running in a winding course through the sand, and sometimes expanding into sheets of water occupying the whole breadth of the channel. Latitude by a Pegasi 19 degrees 16 minutes 22 seconds. 22nd October.