Tuesday, 27th July, Sandy Undulations. Started at 9 a.m. on the same bearing as yesterday, 182 degrees. At twenty-one miles changed our course to 235 degrees to some gum-trees. The first part of our journey the scrub became lower and more open, with limestone and sand rises at intervals, and with a good deal of grass in places. The last ten miles the mulga scrub was so dense that it was with difficulty we managed to get through. We have seen no water on this day's route, except that in the lagoon we are now camped at, and which is as salt as the sea. There is another large lagoon about a mile to the westward of us, which I will examine to-morrow to see if it gives rise to any creek. Distance to-day, twenty-two miles. Wednesday, 28th July, Sand Hills. Started at 9 a.m. on a bearing of 283 degrees for two miles to examine the other lagoon, which is about three miles long, water salt. Changed our course to 182 degrees for ten miles to a large lake crossing our course. Changed our bearing to 240 degrees, and at four miles changed to 270 degrees, crossing some horse-tracks going towards the large lake. This seems to be a country of salt lagoons, for we passed three, and have seen a great many more. The large one that crossed our south course is evidently the head of Lake Gairdner. I could see it winding away in that direction. We have now got upon a plain slightly undulating with thick scrub and the unceasing mulga, intermixed with a few black oaks; no signs of water, no creeks. I intend to proceed north of west to intersect any creek or country that may come from the good country that we found on our south-east course, and the land of kangaroos; there is no hope of anything here. Camped without water. Distance to-day, twenty miles. Thursday, 29th July, Mulga Plain, West of Lake Gairdner. Our course to-day is 310 degrees. Left our camp at 8.30, and accomplished twenty miles of the same scrubby plain, slightly undulating. Plenty of grass, but no water. Same description of country as on the 18th instant. Friday, 30th July, Mulga Plain. Started at 7.35 on same course, 310 degrees. The scrub is so dense that I cannot see above one hundred yards ahead, and sometimes not that. During the night some swans and two ducks flew over, apparently from Lake Gairdner, and going in our direction. At ten miles, having met with some rain water, we halted, for the horses had been three nights without it. I have given them the rest of the day to drink their fill. This seems to be a continuation of the stony plain we crossed on our south-eastern line. The country appears open to the south, but no sign of any permanent water. Forster bakes the last of our flour this afternoon--the last of our provisions. Distance to-day, ten miles.