3D MARCH.--Early this morning a party of men were sent to cut better approaches to the ford across the Barwan at Mr. Parnell's station. Ascertained the longitude of the junction of the rivers Macquarie and Darling at our present camp to be 147 deg. 33' 45" E., by actual measurements connected with my former surveys of the colony. Mr. Kennedy had chained the whole of the route from Bellaringa, and I had connected his work with latitudes observed at almost every encampment, and after determining at various points the magnetic variation, which appeared to be very steady, I made the latitude of this camp 30 deg. 6' 11" south. Thermometer at sunrise, 72 deg.; at noon, 99 deg.; at 4 P.M., 97 deg.; at 9, 72 deg.; and with wet bulb, 65 deg.. The height above the sea level of the bed of the river here, the average result of eight observations, as calculated by Capt. King, was 415 feet. 4TH MARCH.--The party moved off towards the ford over the Barwan at Wyabry, crossing the bed of the Macquarie about half a mile above its junction with the Barwan; there, although the approaches had been well enough cut, we found the bottom too soft for our heavy vehicles, one of which dipped its wheel to near the axle. We were obliged to pave the soft and muddy bed with logs, and to cover these with branches, on which earth was thrown, ere the rest could be got across. The party arrived about noon at Wyabry, and by 2 P.M. the whole was safely encamped on the right bank of the Barwan. I had received this morning a dispatch from my son, commissioner of this district, in which he gave me a most favourable account of several rivers he had explored in the direction of my proposed route. These dispatches came to me at the last camp by the hands of a native, in forty-four hours after the superintendent of Mr. Lawson, being then on his way down the river, had promised to send them to me, from a station forty-five miles off, towards Fort Bourke, where it had been supposed my party would pass. Lat. of this camp, 30 deg. 5' 41" S. On this northern bank of the Darling we looked for novelty in botany, and found some interesting plants, such as a toothed variety of SENERIO BRACHYLOENUS D. C., a kind of groundsel; MORGANIA FLORIBUNDA, loaded with purple blossoms, and a variety of HELICHRYSUM BRACTEATUM, somewhat different in the leaves from the usual state of the species. Thermometer at sunrise, 70 deg.; at 4 P.M., 98 deg.; at 9, 72 deg.;--with wet bulb, 61 deg.. Chapter III.