Saturday, 5th July, Gorge on another West Branch of the River Chambers. Started 8.15; course, 5 degrees west of north. After travelling two miles over stony rises we ascended a low table land with coarse grass and a little spinifex; at six miles came up to a high stony tent-hill, which I ascended and named Mount Shillinglaw. All round are stony hills and grassy valleys--dip of the country seemingly to the south. There is apparently a continuous range in the distance to the north-west, the Chambers range. Changed my course to 325 degrees, and at four miles struck another large branch coming from the north-east, and running apparently south--plenty of water in it. This I named the Waterhouse, in honour of Mr. H.W. Waterhouse, naturalist to the expedition. Some of the horses are become so lame on account of the stones they will not be able to travel another day. I have camped early to have them shod, for on Monday I intend taking a north-west course to strike the source of the Adelaide. The country on the last course is again of the very best description and well grassed. The hills are stony, but abound with grass; they are composed of sandstone, ironstone, and occasionally a little limestone; the trees are the same as those on the Roper. Wind, south-east. Latitude, 14 degrees 18 minutes 30 seconds. Sunday, 6th July, The Waterhouse River. Day again very hot. There is another branch a short distance off, which seems to come from the north-west; I shall follow it to-morrow if it continues the same course. I think these creeks we are now crossing must be the sources of the Adelaide flowing towards the dry river seen by Mr. Gregory running towards the north-west. Wind light; sky cloudy.