July 1. — After travelling three miles we came to a chain of large ponds of brackish water, but with excellent grass around them, and as the horses had nothing to eat or drink last night we halted for three hours. The water was bad, but they drank it, and we were obliged to do so too, after an ineffectual search for better. At noon we again moved on, and after proceeding about five miles, came to a large watercourse where the water was excellent, and the feed abundant. Here we halted for the night, to make our horses amends for the bad fare and hard work of yesterday. From the hill above our camp West Mount Barren bore E. 8 degrees N., Middle Mount Barren E. 21 degrees N., and Rugged Mountains behind the Sound, W. 4 degrees S. The watercourse we were upon, like all those we had lately crossed, had perpendicular cliffs abutting upon it, either on one side or the other, and the channel through which it wound looked almost like a cut made through the level country above it. A few casuarinae were observed in parts of the valley, being the first met with since those seen near Cape Arid.