13TH JULY.--After marking this camp XLVIII., we quitted the river Salvator, and travelled along our track of yesterday, or nearly N. W., but deviating from this track occasionally, where broken ground or thick scrub was to be avoided. The highest part of the scrubby land we crossed, was 1310 feet above the sea. We arrived in good time at the river, where I had previously slept, and there encamped. On the plains adjacent, the ACACIA PENDULA grew, as on those near the Bogan; and we saw also various new and curious grasses, and some very singular shrubs in the scrub. The banks of the river were steep, and consisted of soft clay. I employed the party to make a bridge across it, and this was well completed before sunset. Thermometer, at sunrise, 23 deg.; at noon, 65 deg.; at 4 P.M. 68 deg.; at 9, 40 deg.. Height above the sea, 951 feet. (XLIX.) 14TH JULY.--Crossing the river, (which I called the Claude), we travelled, first, through an open forest, and then across one of the richest plains I had ever seen, and on which the ANTHISTIRIA AUSTRALIS, and PANICUM LOEVINODE, the two best Australian grasses, grew most abundantly. The soil was black; the surface quite level. There might have been about a thousand acres in the first plain we crossed, ere we arrived at another small river, or water-course, which also contained water. We soon reached the borders of other very extensive plains and open downs, apparently extending far to the eastward. On our left, there was a scrub of Acacia pendula. The undulating parts of the clear land, were not so thickly covered with grass as the plains, not because the soil was bad, but because it was so loose, rich, and black, that a sward did not so easily take root and spread upon it, from its great tendency to crack, after imbibing moisture, on its subsequent evaporation. All this rich land was thickly strewed with small fragments of fossil wood, in silex, agate, and chalcedony. Many of the stones, as already observed, most strikingly resembled decayed wood, and in one place the remains of an entire trunk lay together like a heap of ruins, the DILAPIDATED remains of a tree! I obtained even a portion of petrified bark; but specimens of this were rare. The elevation of the highest part of these downs, was 1512 feet above the sea.