"Darling." The use of the aboriginal name of this river is indispensable amongst the squatters along its banks, who do not appear to know it to be the "Darling." It is most desirable to restore to such rivers their proper names as early as possible after they have been ascertained, were it only to enable strangers thereby to avail themselves of the intelligence and assistance of the natives, in identifying the country by means of the published maps. The river Castlereagh is known to the natives as the Barr; Morissett's Ponds, as the Wawill; and the lower part of the Macquarie, as the Wammerawa. The squatting system of occupation requires still more that the native names of rivers should be known to commissioners empowered to parcel out unsurveyed regions of vast extent, whereof the western limits would be, indeed, beyond their reach or control, but for the line of an angry savage population, which line the squatter dares not to cross unsupported by an armed mounted police. Thermometer at sunrise, 59 deg.; at noon, 110 deg.; at 4 P. M., 107 deg.; at 9, 89 deg.; --with wet bulb 72 deg.. 23RD FEBRUARY.--The drays did not come up, nor was any intelligence of them received at our camp until late in the afternoon, when a man I had sent back in the morning to tell the drivers to halt in good time to send forward the cattle by daylight along my track to the water, brought me word that he left them on the way ten miles off about eleven in the morning. This man (Smith) also brought forward the sheep with him. They had not drank for two nights, and ran skipping and baaing to the water, as soon as they saw it. The heat of this day and yesterday was excessive, a hot wind blowing hard all the time. Among the scrub on the banks of the Macquarie, a salt plant belonging to the genus SCLEROLOENA was remarked; it was perhaps not distinct from S. UNIFLORA. The GOODENIA GENICULATA overran the ground, with its strawberry-like runners, and yellow flowers. Latitude, 30 deg. 12' 56" S. Thermometer at sunrise, 75 deg.; at noon, 105 deg.; at 4 P.M., 94 deg.; at 9, 73 deg.;--with wet bulb, 62 deg.. 24TH FEBRUARY.--Some of the teams came up, having been out all night. The drivers brought me word that they had been detached at twilight to come six miles; the night was very dark; of course they could not see my track, and as a matter equally of course, the spare bullocks had strayed from them. Such were the almost daily recurring causes of delay by the bullock drivers on this journey. Here, within a day's journey (thirteen miles) of the Barwan, I was compelled to halt thus several days, and really the prospect of performing so long a journey with such drivers seemed almost hopeless. Thermometer at sunrise, 59 deg.; at noon, 80 deg.; at 4 P.M., 85 deg.; at 9, 64 deg.;--with wet bulb, 59 deg..