I found and left the Darling in a complete state of exhaustion. As a river it had ceased to flow; the only supply it received was from brine springs, which, without imparting a current, rendered its waters saline and useless, and lastly, the fish in it were different from those inhabiting the other known rivers of the interior. It is true, I did not procure a perfect specimen of one, but we satisfactorily ascertained that they were different, inasmuch as they had large and strong scales, whereas the fish in the western waters have smooth skins. On the other hand, the waters of the new river were sweet, although turbid; it had a rapid current in it; and its fish were of the ordinary kind. In the above particulars, therefore, they differed much as they could well differ. Yet there were some strong points of resemblance in the appearance of the rivers themselves, which were more evident to me than I can hope to make them to the reader. Both were shaded by trees of the same magnificent dimensions; and the same kind of huts were erected on the banks of each, inhabited by the same description, or race, of people, whose weapons, whose implements, and whose nets corresponded in most respects. We will now cast our eyes over the chart: and see if the position of the two rivers upon it, will at all bear out our conclusion that they are one and the same; and whether the line that would join them is the one that the Darling would naturally take, in reference to its previous course.--We shall find that the two points under discussion, bear almost N.E. and S.W. of each other respectively, the direct line in which the Darling had been ascertained to flow, as far as it had been found practicable to trace it. I have already remarked that the fracture of my barometer prevented my ascertaining the height of the bed of the Darling above the sea, during the first expedition. A similar accident caused me equal disappointment on the second; because one of the most important points upon which I was engaged was to ascertain the dip of the interior. I believe I stated, in its proper place, that I did not think the Darling could possibly be 200 feet above the sea, and as far as my observations bear me out, I should estimate the bed of the Murray, at its junction with the new river, to be within 100. It would appear that there is a distance of 300 miles between the Murray River at this place, and the Darling; a space amply sufficient for the intervention of a hilly country. No one could have been more attentive to the features of the interior than I was; nor could any one have dwelt upon their peculiarities with more earnest attention. It were hazardous to build up any new theory, however ingenious it may appear. The conclusions into which I have been led, are founded on actual observation of the country through which I passed, and extend not beyond my actual range of vision; unless my assuming that the decline of the interior to the south has been