At 7.45 a.m. started on a course 320 degrees over an undulating country with dense thickets and patches of cypress and gum forest; at 4.30 p.m. bivouacked near a small hole in a rock with about two gallons of rainwater remaining in it. Latitude 30 degrees 5 minutes 43 seconds; longitude 118 degrees 22 seconds. 22nd August. At 7.35 a.m. resumed a west course through a succession of thickets, gum forest, and scrub; at 12.30 p.m. observed a granite hill bearing 315 degrees; made for the hill, and finding some excellent grass around a native well, at 2.15 camped. Latitude 30 degrees 3 minutes 36 seconds; longitude 118 degrees 8 minutes. 23rd August. Started at 7.40 a.m. in a direction 320 degrees, over thinly-timbered scrubby country, which gradually improved and became grassy; at 10.5 altered the course to 336 degrees, and at 1.15 p.m. reached the summit of a granite hill from which a series of dry lakes, or salt marshes, were visible in a wide valley trending to the north-east. A very remarkable hill bore 316 degrees, about 35 miles distant. Steering in the direction of this hill, found the country covered with almost impenetrable scrub of acacia. At 4.20 halted at the foot of a high sandstone cliff, where some deep holes in the rock retained a small quantity of rainwater. Latitude 29 degrees 51 minutes; longitude 119 degrees 55 minutes. 24th August. Left the bivouac at 7.35 a.m. steering 312 degrees; passed over a nearly level country timbered with cypress and eucalyptus, with patches of acacia thicket; at 2.45 p.m. halted at a deep waterhole in a flat granite rock. Latitude 29 degrees 42 minutes 31 seconds; longitude 117 degrees 41 minutes. EXTENSIVE SALT MARSHES. 25th August.