July 28.--The waters in the stream continue stationary. There must have been heavy rains to the eastward, to maintain at this height such a body of water. As to the rains that fall westward of the Blue Mountains, I am clearly of opinion, that they are in no way auxiliary in forming this stream. The soil, the general level surface, without a single water-course north or south, prove that all the waters which fall are quickly absorbed; and I think it very probable that rain falls here extremely seldom, and never simultaneously with the rain of the eastern coast and mountains. The day was full of cross accidents, and ended in the separation of the expedition for the first time. The river turned suddenly north, whilst extensive swamps ran out from it to the south-east, backed by thick scrubby land, which we afterwards found, having taken another sudden bend into the north-west, to be at a considerable distance, and which we had some difficulty in finding at all, the smaller plains being separated from the larger one by lagoons, edged with trees similar to those on the banks of the river. Not having been able to find the rest of my companions this evening, I halted with three men on the spot where we reached the river, firing muskets, that if any of the missing party were near, they might be enabled to join us in the morning. The bendings of the river were singularly remarkable, trending suddenly from south-east by east to north-north-west, and then back to the north and north-east; I mean the principal bending in the general course, for the smaller ones were as usual innumerable. Of the swamps, which in places, extended from eight to ten miles from the river south-east and south, some parts were dry and others under water; and there were occasionally large lagoons covered with innumerable wild fowl of various descriptions. Great numbers of native companions, bustards, and emus, were seen on the plains, Which, at the termination of our day's journey, were of a better and drier description than usual. The north-east hills bounding them were low, thinly studded with trees, and although rocky on the summits, were covered with green tea-grass. The flood in the river was very high, but from the appearance of the banks, which were about five feet from the water, I did not think it had risen much in the course of the day.