25TH FEBRUARY.--In the evening, the carpenter brought in ten of the stray bullocks; four were still wanting, and I dispatched Mortimer, a bullock driver, and the carpenter to show him where he had last left the track of the animals still astray; both were mounted. Thermometer at sunrise, 53 deg.; at noon, 90 deg.; at 4 P.M., 94 deg.; at 9, 79 deg.;--with wet bulb, 62 deg.. 26TH FEBRUARY.--Mortimer came in early, saying he had found only one of the bullocks, that the others had gone back to the last wateringplace twenty-two miles distant. His companion did not arrive during the day; he said he had left him bringing on the animal they had fallen in with. I blamed him for leaving him, and ordered him to find him forthwith on foot. I could not afford to lose horses. Here, it seemed, we were doomed to remain. I endeavoured to make the most of the time by carrying on the mapping of our survey, in order to make good our longitude at crossing the Barwan. Thermometer at sunrise, 60 deg.; at noon, 94 deg.; at 4 P.M., 101 deg.; at 9, 72 deg.;--with wet bulb, 62. deg. 27TH FEBRUARY.--When the teams were about to be put to the drays this morning, I was informed that five bullocks were astray. This delayed the party until 10 A.M., and then we left one lame bullock still missing. I reduced the men's rations by one pound per week, and declared that a proportional reduction should be regularly made to correspond with such unlooked-for delays in the journey. We proceeded over firmer ground, having the river almost always in sight, until, after travelling about six miles, our guide showed me the river, much increased in width, and said they called that the "Barwan." As it was still a mere chain of ponds, though these were large, I was sure this was not the main channel; he also said this joined the main channel a good way lower down. I was convinced that it was only the Castlereagh that had thus augmented the channel of the Macquarie, which I found afterwards to be the case, the junction taking place two miles higher. I willingly encamped on it, however, to afford more time for the lost man, and the man sent after him, to rejoin the party. I this day gave "Yulliyally," our guide, the promised tomahawk, a pipe, tobacco; and, in addition, a shirt; also a few lines to Mr. Kinghorne, certifying that this native had done what he had engaged to do. Thermometer at sunrise, 62 deg.; at noon, 94 deg.; at 4 P.M., 97 deg.; at 9, 70 deg.;-- with wet bulb, 57 deg..