16th. Continued east for five miles, when we found three of the horses were missing; returned with Windich, and found them near camp, having never started at all. Seeing white gums to the south-east, we followed for five miles down a fine brook (which I named Negri Creek, after Commander Negri, founder of the Geographical Society of Italy), with fine grassy country on each side. Afterwards it joined another brook, and went south-east for about three miles, where it lost itself in open flats. Struck south for two miles to some large white gums, but found no water. After long looking about I found water in a gully and camped. Distance travelled about twenty miles. Spinifex and grassy openings the first five miles to-day. Barometer 28.20; thermometer 67 degrees at 6 o'clock p.m.; latitude 26 degrees 16 minutes 8 seconds by Jupiter. Windich shot a turkey. MOUNTS BARTLE AND RUSSELL. 17th (Sunday). The horses rambled far away, and it was noon before they were all collected. Shifted three and a half miles north, where there was better feed and water. Went on to a low hill on the north of our last night's camp, and got a fine view of the country to the south and south-east. Two remarkable flat-topped hills bore South-East, which I named Mount Bartle and Mount Russell, after the distinguished President and Foreign Secretary of the Royal Geographical Society. Saw a long line of white gums (colalyas) running East and West about ten miles distant, looking very much like a river. To the east and north the view was intercepted by long stony rises, apparently covered with spinifex. Large white gum clumps studded the plains in every direction. Evidences of heavy rainfall at certain times to be seen everywhere. Barometer 28.28; thermometer 72 degrees at 5 p.m.; latitude 26 degrees 13 minutes 4 seconds South. 18th. Steered South-South-East for four miles, then South-East generally, towards the flat-topped hills seen yesterday, and which bore 144 degrees East magnetic from Spinifex Hill. At six miles crossed a low range covered with spinifex, after which we passed over country generally well grassed, some of it most beautifully, and white gums very large in clumps were studded all over the plains. At about twenty-two miles reached the flat-topped hills, and camped, finding some water in a clay-pan. The line of white gums I find are only large clumps studded over extensive plains of splendidly-grassed country. No large water-course was crossed, but several small creeks form here and there, and afterwards run out into the plains, finally finding their way into the Murchison. It was sundown when we camped. Walked over twenty miles myself to-day. Barometer 28.38; thermometer 60 degrees at six o'clock; latitude 26 degrees 27 minutes 38 seconds South, longitude about 119 degrees 42 minutes East.