I considered this high ground would afford the safest line of route in the winter season to the low interior country; while the heights would also enable me to extend my survey westward with more accuracy, as far as they could be seen on this journey. From the summit I carefully intersected every prominent point on the western horizon; and I chose for the direction of my future route that part which, while it appeared to be in continuation of the most elevated ground, yet had openings between summits through which I judged the party might pass. To the southward I already beheld Mr. Oxley's various hills, rising like so many islands, from the otherwise level country on the Lachlan; and far in the north-west the level blue horizon exactly resembled an open sea; while to the westward the line of vision was broken by the summits of Croker's and Harvey's ranges. After a careful reconnaissance of these and other still more distant features the country seemed to me most favourable for a passage on the bearing of 60 degrees west of north. In that direction therefore I resolved to proceed; trusting that He, who led Israel like a flock, would guide and direct our little party through the Australian wilderness before us. ASCEND THE HILL NORTH OF BUREE. April 7. Early this morning I ascended the hill to the northward of the old station, and took some angles for the purpose of determining the position of the house at Buree, from which our measurement was to commence. The party moved forward along a road still for the first 5 1/2 miles, when this convenience would serve our purpose no longer, and we struck into the pathless woods. ENCAMP ON THE MUNDADGERY. After travelling over some connected hills and marking the trees as we proceeded we, at nine miles, reached the head of a chain of ponds falling southward, which I named Dochendoras Ponds; and encamped beside them in the valley of Mundadgery, where the pasturage was good. The whole country traversed this day consisted of grassy open forest-land. We measured at first with a perambulator from the house at Buree; but this got out of order, upon which Mr. Larmer, with the chain and circumferenter, continued the measurement. We took with us fifteen sheep from Buree, to try whether this kind of livestock was available on such expeditions. CROSS A GRANITIC RANGE. April 8.