As soon as I had taken a little refreshment, therefore, I mounted a fresh horse; and he accompanied me across a small plain, immediately in front of the camp, which was subject to overflow and covered with polygonum, having a considerable extent of reeds to its right.
From the plain we entered a wood of blue-gum, in which reeds, grass, and brush formed a thick coppice. We at length passed into an open space, surrounded on every side by weeds in dense bodies. The great marsh bore south of us, and was clear and open, but behind us the blue-gum trees formed a thick wood above the weeds.
About two hundred yards from the outskirts of the marsh there was a line of saplings that had perished, and round about them a number of the tern tribe (sea swallow) were flying, one of which Mr. Hume had followed a considerable way into the reeds the evening before, in the hope that it would have led him to water. The circumstance of their being in such numbers led us to penetrate towards them, when we found a serpentine sheet of water of some length, over which they were playing. We had scarcely time to examine it before night closed in upon us, and it was after nine when we returned to the tents.
From the general appearance of the country to the northward, and from the circumstance of our having got to the bottom of the great marsh, which but a few days before had threatened to be so formidable, I thought it probable that the reeds would not again prove so extensive as they had been, and I determined, if I could do so, to push through them in a westerly direction from our position.
SECOND GREAT MARSH.
The pits yielded us so abundant a supply during the night, that in the morning we found it unnecessary to take the animals to water at the channel we had succeeded in finding the evening before; but pursuing a westerly course we passed it, and struck deep into the reeds. At mid-day we were hemmed in by them on every side, and had crossed over numerous channels, by means of which the waters of the marshes are equally and generally distributed over the space subject to their influence. Coming to a second sheet of water, narrower, but longer, as well as we could judge, than the first, we stopped to dine at it; and, while the men were resting themselves, Mr. Hume rode with me in a westerly direction, to ascertain what obstacles we still had to contend with. Forcing our way through bodies of reeds, we at length got on a plain, stretching from S.E. to N.W., bounded on the right by a wood of blue-gum, under which the reeds still extended, and on the left by a wood in which they did not appear to exist. Certain that there was no serious obstacle in our way, we returned to the men; and as soon as they had finished their meal, led them over the plain in a N.W. by W. direction. It was covered with shells, and was full of holes from the effects of flood.
CONCLUSIONS IN REGARD TO THE MACQUARIE.
As we were journeying over it, I requested Mr. Hume to ride into the wood upon our left, to ascertain if it concealed any channel. On his return he informed me that he descended from the plain into a hollow, the bottom of which was covered with small shells and bulrushes. He observed a new species of eucalypti, on the trunks of which the water-mark was three feet high. After crossing this hollow, which was about a quarter of a mile in breadth, he gained an open forest of box, having good grass under it; and, judging from the appearance of the country that no other channel could exist beyond him, and that he had ascertained sufficient for the object I had in view, he turned back to the plain. We stopped for the night under a wood of box, where the grass, which had been burnt down, was then springing up most beautifully green, and was relished exceedingly by the animals.
It was in consequence of our not having crossed any channel, while penetrating through the reeds, that could by any possible exaggeration have been laid down as the bed of the river, that I detached Mr. Hume; and the account he brought me at once confirmed my opinion in regard to the Macquarie, and I thenceforth gave up every hope of ever seeing it in its characteristic shape again.
Independently however of all circumstantial evidence, it was clear that the river had not re-formed at a distance of twenty-five miles to the north of us, since Mr. Hume had gone to the westward of that point, at about the same distance on his late journey, without having observed the least appearance of reeds or of a river. He had, indeed, noticed a hollow, which occasionally contained water, but he saw nothing like the bed of a permanent stream. I became convinced, also, from observation of the country through which we had passed, that the sources of the Macquarie could not be of such magnitude as to give a constant flow to it as a river, and at the same time to supply with water the vast concavity into which it falls. In very heavy rains only could the marshes and adjacent lands be laid wholly under water, since the evaporation alone would be equal to the supply.