We found no difficulty in crossing the southern mouth on to Babbage Island; the tide being low, it was quite dry at the junction. Having, with Mr. Roe, walked over the greater part of the island, making a rough sketch of its outlines, and completing the requisite observations, while the rest of the party were occupied in an unsuccessful attempt to catch fish, we retraced our steps and crossed the main channel opposite our last night's bivouac, where it is not more than 250 yards wide. Continuing our course north-east for nearly a mile, we crossed several back channels, some trending towards the Kolaina flat of Sir G. Grey, while others were lost in the deep sandy ravines that extend for some distance to the north of the river. While on Babbage Island several natives had waded across the northern mouth of the river to meet us, and had returned after a friendly interview, in which they apparently described the recent landing of two boats with Europeans. We now again fell in with the same natives on the north bank, near a large encampment of women and children; the latter quickly hid themselves on our approach, but the men assumed a threatening attitude, following us for some distance with much clamour. As their numbers quickly augmented, and they appeared determined to commence a fight, we led them out on to an open plain, where, leaving the pack-horses in charge of two of the party, four of us suddenly faced about and charged them at a gallop. This harmless manoeuvre had the desired effect, several of them having narrowly escaped being trodden under foot by the horses. They were very quickly dispersed, and made no further attempt to molest us. We encamped this night about six miles above Babbage Island. 19th May. As our object was to explore as far to the northward as circumstances would allow, we left the river on a north-east course; but two hours' ride across an open plain, through which several channels ran to the north-west, brought us to dry barren scrubs, in which it appeared hopeless we should find either feed or water; we accordingly altered our course to south-east, and made the river again about sundown. RETURN UP THE RIVER. 20th to 23rd May. Was occupied in tracing up the north bank of the river in the hope of finding a tributary coming in from the northward; but, with the exception of one small stream which drains the western face of the Kennedy Range, not a single tributary was met with until we arrived at the Lyons River, a distance of more than ninety miles from Babbage Island. The country on the north bank differs but little from that on the south, except that travelling was somewhat easier. THE LYONS RIVER. ALMA RIVER. 24th May.