CAUSES OF THE FAILURE OF THE RIVER.
The care with which I had noted every change that took place in the Macquarie, from Wellington Valley downwards, enabled me, in some measure, to account for its present features. I was led to conclude that the waters of the river being so small in body, excepting in times of flood, and flowing for so many miles through a level country without receiving any tributary to support their first impulse, became too sluggish, long ere they reached the marshes, to cleave through so formidable a barrier; and consequently spread over the surrounding country—whether again to take up the character of a river, we had still to determine. Unless, however, a decline of country should favour its assuming its original shape, it was evident that the Macquarie would not be found to exist beyond this marsh, of the nature and extent of which we were still ignorant. The loss of my barometer was at this time severely felt by me, since I could only guess at our probable height above the ocean; and I found that my only course was to endeavour to force my way to the northward, to ascertain, if I could, from the bottom of the marshes; then penetrate in a westerly direction beyond them, in order to commence my survey of the S.W. interior. I was aware of Mr. Hume's perseverance, and determined, therefore, to wait the result of his report ere I again moved the camp, to which we returned late in the afternoon of the second day of our departure. We found it unsufferably hot and suffocating in the reeds, and were tormented by myriads of mosquitoes, but the waters were perfectly sweet to the taste, nor did the slightest smell, as of stagnation, proceed from them. I may add that the birds, whose sanctuary we had invaded, as the bittern and various tribes of the galinule, together with the frogs, made incessant noises around us, There were, however, but few water-fowl on the river; which was an additional proof to me that we were not near any very extensive lake.
MR. HUME'S REPORT.
Mr. Hume had returned before me to the camp, and had succeeded in finding a serpentine sheet of water, about twelve miles to the northward; which he did not doubt to be the channel of the river. He had pushed on after this success, in the hope of gaining a further knowledge of the country; but another still more extensive marsh checked him, and obliged him to retrace his steps. He was no less surprised at the account I gave of the termination of the river, than I was at its so speedily re-forming, and it was determined to lose no time in the further examination of so singular a region.
FALSE CHANNEL; PERPLEXITIES.
On the morning of the 28th therefore we broke up the camp, and proceeded to the northward, under Mr. Hume's guidance, moving over ground wholly subject to flood, and extensively covered with reeds; the great body of the marsh lying upon our left. After passing the angle of a wood, upon our right, from which Mount Foster was distant about fourteen miles, we got upon a small plain, on which there was a new species of tortuous box. This plain was clear of reeds, and the soil upon it was very rich. Crossing in a westerly direction we arrived at the channel found by Mr. Hume, who must naturally have concluded that it was a continuation of the river. The boat was immediately prepared, and I went up it in order to ascertain the nature of its formation. For two miles it preserved a pretty general width of from twenty to thirty yards; but at that distance began to narrow, and at length it became quite shallow and covered with weeds. We were ultimately obliged to abandon the boat, and to walk along a native path. The country to the westward was more open than I had expected. About a quarter of a mile from where we had left the boat, the channel separated into two branches; to which I perceived it owed its formation, coming, as they evidently did, direct from the heart of the marsh. The wood through which I had entered it on the first occasion bore south of me, to which one of the branches inclined; as the other did to the S.W. An almost imperceptible rise of ground was before me, which, by giving an impetus to the waters of the marsh, accounted to me for the formation of the main channel. It was too late, on my return to the camp, to prosecute any further examination of it downwards; but in the morning, Mr. Hume accompanied me in the boat, to ascertain to what point it led; and we found that at about a mile it began to diminish in breadth, until at length it was completely lost in a second expanse of reeds. We passed a singular scaffolding erected by the natives, on the side of the channel, to take fish; and also found a weir at the termination of it for the like purpose so that it was evident the natives occasionally ventured into the marshes.
There was a small wood to our left which Mr. Hume endeavoured to gain, but he failed in the attempt. He did, however, reach a tree that was sufficiently high to give him a full view of the marsh, which appeared to extend in every direction, but more particularly to the north, for many miles. We were, however, at fault, and I really felt at a loss what step to take. I should have been led to believe from the extreme flatness of the country, that the Macquarie would never assume its natural shape, but from the direction of the marshes I could not but indulge a hope that it would meet the Castlereagh, and that their united waters might form a stream of some importance. Under this impression I determined on again sending Mr. Hume to the N.E. in order to ascertain the nature of the country in that direction.
EXCURSION TO THE NORTH-WEST.
The weather was excessively hot, and as my men were but slowly recovering, I was anxious while those who were in health continued active, to give the others a few days of rest. I proposed, therefore, to cross the river, and to make an excursion into the interior, during the probable time of Mr. Hume's absence; since if, as I imagined, the Macquarie had taken a permanent northerly course, I should not have an opportunity of examining the distant western country. Mr. Hume's experience rendered it unnecessary for me to give him other than general directions.