July 4.--Having mustered the horses this morning, I ordered an arrangement to be entered into for taking them to the water twice a day, and bringing down the supply required for the use of the party. Each person undertook this duty in turn, and thus the labour was divided. After breakfast I went up myself to examine the state of the water and found great abundance in its bed; there were strong traces of recent and high flooding, the drift timber being lodged among the bushes several feet above the ordinary channel. The grass I was sorry to find was rather old and dry, but still there was a very fair supply of it, a point of great importance to us at a time when it was necessary to detain the whole party for two or three weeks in depot, to enable me to examine the country to the north; my former experience having convinced me that it would be dangerous to attempt to push on, before ascertaining where grass and water could be procured. We had now travelled upwards of eighty miles under Flinders range, from Crystal brook to Mount Arden, and hitherto the character of that range had varied but little. High, rocky, and barren, it rises abruptly from the plains, and so generally even is the country at its base, that we had no difficulty in keeping our drays within a mile or two of it. This was convenient, because we had not far to leave our line of route, when compelled to send up among the ravines for water. The slopes of Flinders range are steep and precipitous to the westward, and composed principally of an argillaceous stone or grey quartz, very hard and ringing like metal when struck with a hammer. There was no vegetation upon these hills, excepting prickly grass, and many were coated over so completely with loose stones that from the steepness of the declivity it was unsafe, if not impossible to ascend them. At one or two points in our routs I climbed up to the top of high summits, but was not rewarded for my toil, the prospect being generally cheerless and barren in the extreme, nor did the account given by Mr. Brown of his ascent of Mount Brown in March 1802, tempt me to delay a day to enable me to view the uninteresting prospect he had seen from the summit of that hill--by far the highest peak in this part of Flinders range.