The river we had encamped upon the preceding night had a level sandy channel thirty-five yards wide, with several shallow pools in its bed; a narrow belt of flooded-gum lined either bank, which also produced abundance of excellent feed; several of the grasses were new to us, yielding a large quantity of seed; further back the pasture was more scanty, and of an inferior variety of grass, the trees consisting almost entirely of small hakea or acacia. The features of the country are generally very tame, with the exception of a prominent hill of considerable altitude, nearly twenty miles to the northward, to which we gave the name of Mount Gascoyne. The summit of another range, of less elevation, a little to the northward of west, distant fifteen miles, was called Mount Puckford. Having decided upon following the left bank of the river, with the view of ascertaining what tributaries might joint from the southward, we this morning took our course for Mount Puckford, touching frequently upon the bends of the river, which soon found a junction with a large channel coming from the eastward, which ultimately proved to be the main Gascoyne; it was still running in a small stream in the bottom of a sandy bed, eighty yards wide, traces of recent heavy floods being plentiful. At ten miles the river has broken through a ridge of opaline rocks, in irregular masses, resembling flints, lying north-east and south-west, and a few miles further coming in contact with the south-east foot of Mount Puckford, it doubles back round its north-east base, and there takes a general north-west course to latitude 24 degrees 36 minutes, and longitude 116 degrees east, which we reached by noon of the 7th, a considerable tributary joining at this point from the northward. A compact sandstone range, resting on a granite base (which was named the Lockier Range, after Mr. Lockier Burgess, one of the principal promoters of the expedition), here diverts the course of the river to the left, which, by sundown, we found was running nearly south. The country for the last fifty miles varies but little in character, extensive open plains alternating with low granite ridges; the banks of the river, which here has acquired a width of 100 yards, with a depth of forty-six feet, being in many places stony and cut down by deep muddy creeks, rendering travelling both slow and laborious. Several tributaries join from the north and south, all of which had very recently ceased to run. To the north and east were several prominent peaks and ranges of trap hills clothed with short herbage; to the highest of the former, a single conical peak, with deeply serrated sides, was given the name of Mount James, after my friend and fellow-traveller, Mr. James Roe; while two lofty summits, far to the northward, were called Mount Samuel and Mount Phillips.