might be rather under than over what I have stated.  It appears to me that the whole of the geological formation of this portion of the continent is the same, and that all the lines of ranges terminate in the same kind of way to the north, that is to say, in detached flat-topped hills of compact or indurated quartz shewing white and abrupt faces.  So terminated the Coonbaralba Range, and so Mr. Eyre tells us did the Mount Serle Range, and so terminated the range we saw to the westward of Lake Torrens.

That they exhibit evidences of a past violent commotion of waters, I think any one who will follow my steps and view them, will be ready to admit.

That the range of hills I have called “Stanley’s Barrier Range,” and that all the mountain chains to the eastward and westward of it, were once so many islands I have not the slightest doubt, and that during the primeval period, a sea covered the deserts over which I wandered; but it is impossible for a writer, whatever powers of description he may have, to transfer to the minds of his readers the same vivid impressions his own may have received, on a view of any external object.

From the remarks into which I have thus been led, as well as those which have escaped me in the course of this narrative, it will be seen that the impressions I had received as to the past and present state of the continent were rather strengthened than diminished, on my further knowledge of its internal structure.

It is true, that I did not find an inland sea as I certainly expected to have done, but the country as a desert was what I had anticipated, although I could not have supposed it would have proved of such boundless extent.

Viewing the objects for which the Expedition was equipped, and its results, there can, I think, be no doubt, as to the non-existence of any mountain ranges in the interior of Australia, but, on the contrary, that its central regions are nearly if not quite on a sea level, and that the north coast is separated from the south as effectually as if seas rolled between them.  I have stated my opinion that that portion of the desert which I tried to cross continues with undiminished breadth to the Great Australian Bight, and I agree with Captain Flinders, in supposing that if an inland sea exists any where, it exists underneath and behind that bank, (speaking from seaward).  It would, I think, be unreasonable to suppose that such an immense tract of sandy desert, once undoubtedly a sea-bed, should immediately contract; considering, indeed, the sterile character of the country to the north of Gawler’s Range, to the westward of Port Lincoln, and along the whole of the south coast of Australia, nearly to King George’s Sound, I must confess I have no hope of any inland fertile country.  I am aware it is the opinion of some of my friends that the Stony Desert may communicate with Lake Torrens.  Such may have been and still may be the case—­I will not argue the contrary,