ten feet more water in it than usual: its present average depth is about eighteen feet.

The soil of these extensive plains, designated Field's Plains, is for the most part extremely rich, as indeed might be expected, from the deposition of the quantities of vegetable matter that must take place in periods of flood. The plains are in some places even lower than the ground forming the immediate bank of the river, very soft, and difficult for loaded horses to pass over. If we had been so unfortunate as to have had a rainy season, it would have been utterly impossible to have come thus far by land. The ranges of hills are unconnected, and are rocky and barren; the swamps for the most part surrounding them. Mount Cunningham is a lofty rocky hill, about a mile and a half long, composed of granite rock, but entirely surrounded by low swampy ground.

Here we were so unfortunate as to find the barometer broken, the horse which carried the instruments having thrown his load in passing the swamps: every precaution had been taken in the packing to prevent such an accident, which was the more to be regretted, as it interrupted a chain of observations by which I hoped to ascertain the height of the country with tolerable accuracy. The last observations that were made, reduced to this place, gave us an elevation of not more than five hundred feet above the sea, or about a hundred feet lower than the country at the depot.

Since the river has been swollen, the fish have eluded us, none having been caught since yesterday morning. Two black swans were however shot on the river. Our present situation is by no means enviable: in the first place, there is every chance that the river may be lost in a multitude of branches, among those marshy flats, and farther navigation thus rendered impossible; and in the second, a rise of four feet in the river would sweep us all away, since we have not the smallest eminence to retreat to. Should the river lead through to the westward, and be afterwards joined by the branches we have passed, it may become something more interesting and encouraging: a wet or even a partially rainy season will, in my judgment, preclude us from returning by our present route, more especially if these low countries continue for any distance.

I am by no means surprised at the paucity of natives that have been seen: it would be quite impossible in wet seasons to inhabit these marshes, and equally so for them to retreat in times of flood. Their fires are universally observed near the higher grounds, and no traces of any thing like a permanent camp has hitherto been seen; but in many places on the banks quantities of pearl muscle-shells were found near the remains of fires. That large species of bittern, known on the east-coast by the local name of Native Companions, I believe from the circumstance of their being always seen in pairs, was observed, on the flats, of very large size, exceeding six feet in height: they were so shy that we were unable to shoot any.

May 12.--The fine weather still continues to favour us. The river rose in the course of the night upwards of a foot. It is a probable supposition that the natives, warned by experience of these dangerous flats, rather choose to seek a more precarious, but more safe subsistence in the mountainous and rocky ridges which are occasionally to be met with. The river and lagoons abound with fish and fowl, and it is scarcely reasonable to suppose that the natives would not avail themselves of such store of food, if the danger of procuring it did not counterbalance the advantages they might otherwise derive from such abundance.

About three quarters of a mile farther westward we had to cross another small arm of the river, running to the northward, which although now full, is, I should think, dry when the river is at its usual level. It is probable that this and the one which we first crossed join each other a few miles farther to the westward, and then both united fall into the stream which gave them existence. We had scarcely proceeded a mile from the last branch, before it became evident that it would be impossible to advance farther in the direction in which we were travelling. The stream here overflowed both banks, and its course was lost among marshes: its channel not being distinguishable from the surrounding waters.

Observing an eminence about half a mile from the south side, we crossed over the horses and baggage at a Place where the water was level with the banks, and which when within its usual channel did not exceed thirty or forty feet in width, its depth even now being only twelve feet.

We ascended the hill, and had the mortification to perceive the termination of our research, at least down this branch of the river: the whole country from the west north-west round to north was either a complete marsh or lay under water, and this for a distance of twenty-five or thirty miles, in those directions; to the south and south-west the country appeared more elevated, but low marshy grounds lay between us and it, which rendered it impossible for us to proceed thither from our present situation. I therefore determined to return back to the place where the two branches of the principal river separated, and follow the south-west branch as far as it should be navigable; our fears were however stronger than our hopes, lest it would end in a similar manner to the one we had already traced, until it became no longer navigable for boats.

In pursuance of this intention we descended the hill, which was named Farewell Hill, from its being the termination of our journey in a north-west direction at least for the present, and proceeded up the south bank of the stream. We were able to reach only a short distance from the spot where we stopped last night, having been obliged to unload the horses no less than four times in the course of the day, added to which, the travelling loaded through those dreadful marshes had completely exhausted them: my own horse, in searching for a better track, was nearly lost, and it consumed four hours to advance scarcely half a mile.

My disappointment at the interruption of our labours in this quarter was extreme, and what was worse, no flattering prospect appeared of our succeeding better in the examination of the south-west branch. I was however determined to see the present end of the river in all its branches, before I should finally quit it, in furtherance of the other objects of the expedition.

May 13.--Returned to the point whence the river separates into two branches; intending first to descend the south-west branch for some distance before the boats and baggage should move down, being unwilling the horses should undergo an useless fatigue in traversing such marshy ground, unless the branch should prove of sufficient magnitude to take us a considerable distance; conceiving it an object of the first importance that the horses should start fresh, if I should find it necessary to quit the river at this point of the coast.

May 14.--This branch of the river has fallen about a foot. Having directed the casks in the boats to be prepared for slinging on the horses, and the tools and arms to be put in order preparatory to leaving the river, I proceeded to examine the branch. After going about four miles down, it took a similar direction (north-westerly) to that which we had previously traced. The banks on both sides were a mere marsh, and about six miles down, a small arm from it supplied the marshes between this and the north-west branch. The fall of the country from the south-east to the north-west was very remarkable; the water in the branch was here nearly level with the banks, and was narrowed to a width of not more than twenty feet. Finding that it would be equally as impracticable to follow this branch as the other, I returned and commenced preparations for setting out for the coast, which I purpose not to do until Sunday, in order that the horses may be refreshed, as they will at first be most heavily laden.

My present intention is to take a south-west direction for Cape Northumberland, since should any river be formed from those marshes, which is extremely probable, and fall into the sea between Spencer's Gulf and Cape Otway, this course will intersect it, and no river or stream can arise from these swamps without being discovered. The body of water now running in both the principal branches is very considerable, fully sufficient to have constituted a river of magnitude, if it had constantly maintained such a supply of water, and had not become separated into branches, and lost among the immense marshes of this desolate and barren country, which seems here to form a vast concavity to receive them. It is impossible to arrive at any certain opinion as to what finally becomes of these waters, but I think it probable, from the appearance of the country, and its being nearly on a level with the sea, that they are partly absorbed by the soil, and the remainder lost by evaporation.

May 15.--Mr. Cunningham made an excursion under Mount Melville, and found the country in that direction as full of stagnant water as to the north-west. Some tracts rather more raised above the usual level were barren, and covered with acacia scrubs. The natives had been recently under Mount Melville, perhaps to the number of a dozen: abundance of large pearl muscle-shells was found about their deserted fireplaces, but these shells had been apparently some months out of water.

May 16.--Felled a tree of the acacia pendula, the wood extremely hard and beautiful; a black resinous juice exuded from the heart, which much resembled the black part of the lignum vitae. Our observations placed this spot in latitude 33. 15. 34. S.; longitude 147. 16. E. and the variation of the compass 7. 0. 8. E.

May 17.--After reducing our luggage as much as possible, we sent every thing down the branch about two miles, and landed on the south shore; got every thing in readiness for proceeding on our journey to-morrow; hauled up the boats on the south bank, and secured them, together with such heavy articles as we could not take with us. The provisions occupied our whole fourteen horses, including my own, and each will still be very heavily laden.

May 18.--At nine o'clock we commenced our journey towards the coast; at three stopped within four miles of Mount Maude, on a dry creek, with occasional pools of very indifferent water. The country through which we passed from the branch was for the first three miles very low and wet, with large lagoons of water. During the latter part of the journey the country was more elevated though still level, the soil light and rotten, and overrun with the acacia pendula. The horses being very heavily laden fell repeatedly during the early part of the day. Our course was nearly south-west, and we performed about ten miles.

May 19.--At two miles passed over a low rocky range connected with Mount Maude: the remainder of our day's journey (nearly twelve miles) lay chiefly through a barren level country, the ground rather studded than covered with grass, and that only in patches, by far the greater part producing no grass at all. The trees were chiefly cypresses, a new species of staculia, together with scrubs of the acacia pendula. The soil a light red sand, the lower levels being stronger and more clayey. We did not meet with any water, and were obliged to stop in the middle of an acacia brush, the horses being too much fatigued to proceed farther, and as the country had been lately burnt, the grass was a little better than usual. At four o'clock sent two men to search for water, and in about half an hour they returned, having found several small ponds of good water about three quarters of a mile to the south-west: the swamp appeared to extend to the northward a considerable distance. Several native huts were on the edge of one of the ponds, but