We started early and the morning was beautifully serene and clear. The shrubs which gracefully fringed the plains were very picturesque in their outline, and the delicate tints of their green foliage contrasted beautifully with the more prevailing light grey tinge, and with white stems and branches; while the warmer green of one or two trees of Australian rosewood relieved the sober greyish green of the pendent acacia. At 5 1/2 miles the river took a westerly bend, the ground on its banks being higher than usual. From a tree at this point two small hills (supposed to be the Twins) bore west-north-west distant about twelve miles. At 9 miles 35 chains the south of the Twins bore 258 degrees, distant about four miles; at 10 miles 28 chains, the southern of the Twins bore 249 degrees, the northern 252 degrees; and we encamped on reaching the creek, after a journey of fifteen miles. We had a fine view of the supposed Twins as we proceeded; and I found water on making the river where I wished to encamp. May 15. At daylight we set off for the hills (which I judged to be the Twins of Sturt) distant 8 1/4 miles. I found a group of small hills, composed of quartz rock, the strata of which were highly inclined, and the strike extended north-west and south-east. From the highest, which is the southern hill, I looked in vain for New Year's range; the horizon in that direction being quite unbroken; hence I concluded that this could not be the Twins, and I named it Mount Hopeless. Several remarkable hills appeared however to the west and south-west, on all of which I took bearings with the theodolite. Their surface was naked and rocky, only a few trees consisting of pine (or callitris) and some dwarf gumtrees appearing on them; but the country within two miles of their base was more densely wooded than that nearer the Bogan. There were Callitris pyramidalis, Acacia longifolia, and eucalyptus amongst the trees, and the soil contained fragments of quartz mixed with red earth. I heard from the summit the mogo of a native at work on some tree close by, but saw neither himself nor the smoke of his fire. I returned in time to put the party in motion by twelve o'clock; and after a journey of 8 1/4 miles we encamped, as usual, near the left bank of the Bogan. Water seemed more abundant in this part of the river, for, on the three last occasions, we had found some as soon as we approached the bank. The pond near our present encampment was large and deep, and there were others above and below it. DANGEROUS CONSEQUENCE OF SURPRISING A NATIVE.