29TH APRIL.--The tendency of the soft earth of the banks to break into gullies, branching back into impervious scrubs, was such as to prevent me from either seeing much of the river during this day's journey, or pursuing a straight course. At one place I could only follow the grassy margin of the river, by passing between its channel and the berg, all seared as it was with water-worn gullies, and crowned with scrub; but I was soon locked up under these where a bad hole impeded our progress along the river, and I was obliged to back the carts out, the best way I could. While travelling along the margin I perceived a slight current in a gravelly part of the bed. I had previously observed a whitish tinge like that of a fresh in the river water, this day and yesterday, doubtless the product of the late rain, and probably from these clay gullies. After a circuitous journey, we came out on a clear grassy brow over-looking much open country. There I still met with heads of gullies, but could easily avoid them, and after traversing a fine grassy plain, we encamped as near the river as the gullies would allow, in latitude 27 deg. 28' 27". One of the party, John Douglas, from the top of a tree, discovered vast plains in the N. E. extending to the horizon, a river line pursuing a northerly course, and in the N. W. a mass of cloud hung over what he supposed to be mountains. Thermometer, at sunrise, 36 deg.; at 4 P. M., 63 deg.; at 9, 47 deg.; with wet bulb, 44 deg.. 30TH APRIL.--Obliged to keep at some distance from the river, I came upon open forest land, where gentle undulations took the place of the rugged gullies. Thus we travelled over a beautiful country, due north, with sufficient indications of the river on our right, in the slopes that all fell to that side. There were ponds in some hollows, and we made the river itself at various parts of our route. At length, where it bit on a high scrubby bank, I again proceeded northward and came upon a large lagoon, sweeping round to S. W. and S. S. W., further than we could see. It had on its surface numerous ducks, and a large encampment of native huts appeared at one end. We encamped by this lagoon, in latitude 27 deg. 20' S. Again vast plains and downs to the N. E. were seen by Dicky, our youngest native, from a tree. Thermometer, at sunrise, 27 deg.; at 4 P. M., 65 deg.; at 9, 43 deg..