April 7.
I set off early for Mount Granard, followed by six men on horseback and a native named Barney who was also mounted. We rode at a smart pace on a bearing of 280 degrees across thirty miles of soft red sand in which the horses sank up to their fetlocks, and we reached the foot of the hill a little before sunset.
SCARCITY OF WATER THERE.
Throughout that extent we neither saw a single watercourse nor discovered the least indication of water having lodged there during any season. At eleven miles from the camp we crossed a low ridge of granite (named Tarratta) a hopeful circ.u.mstance to us as promising a primitive range of hills between the Darling and Lachlan, and because in a crevice of this granite our aboriginal guide found some water. The desert tract we crossed was in other respects unvaried except that, in one place, we pa.s.sed through four miles of a kind of scrub which presented difficulties of a new character. The whole of it consisted of bushes of a dwarf species of eucalyptus, doubtless E. dumosa (A. Cunningham) which grew in a manner that rendered it impossible to proceed, except in a very sinuous direction, and then with difficulty by pushing our horses between stiffly grown branches. Where no bushes grew the earth was naked, except where some tufts of a coa.r.s.e matted weed resembling Spinifex impeded the horses, but seemed to be intended by Providence to bind down these desert sands. We saw blue ranges on our right, and I hoped that before we ascended Mount Granard we should cross some watercourse coming from them; but nothing of the kind appeared and, after traversing a dry sandy flat, we began to ascend. Finding myself separated from the summit, after we had climbed some way, by a deep rocky ravine, and being in doubt about obtaining water, I sent the people with the horses to encamp in the valley to which that ravine opened, with directions to look for water while daylight lasted.
VIEW FROM THE SUMMIT.
Meanwhile I proceeded to the summit with one of the men and the native. I arrived there and, just before the sun went down, obtained an uninterrupted view of the western horizon; but the scene was inconclusive as to the existence of such a dividing range as I hoped to see. Ridges and summits appeared abundantly enough, but they were not of a bold or connected character, and I did not obtain upon the whole a better idea than I previously had respecting the extension of that singular group of hills to the westward. I stood upon the best height however for carrying on my angles in that direction. To the eastward I saw Hurd"s Peak and Bolloon, also Goulburn"s and Macquarie"s ranges, Mount Torrens, and Mount Aiton of Oxley. The last hill appeared alone on the horizon, in a south-south-east direction as shown in his map. But the most commanding point was Yerrarar, the highest apex of Goulburn range, forming with Bolloon and this station an almost equilateral triangle of about 30 miles a side.
The features before us terminated rather abruptly towards the south like cliffs of tableland, and seemed to mark out the basin of the Lachlan; but beyond those parts overlooking Mr. Oxley"s route I could obtain no view, although I perceived that I might from Yerrarar.
ENCAMP THERE.
Having completed my work as the sun was setting I hastened to the valley, and learnt that the party had discovered neither water nor gra.s.s. Barney the native had nevertheless obtained both when with me at the top of the mountain; and therefore, although it was dark and we were all fatigued, yet up that rocky mountain we were compelled to go with the horses, and encamp near the summit beside a little pool of water which had been well-known to Barney at other times. On this elevated crest the air was surprisingly mild during the night for, although I slept in my clothes and on the ground, I enjoyed its freshness as a great relief from the oppressive heat of the day. Our singular bivouac on the summit, which I had so long wished to visit, was adorned with a strange-looking tree, probably Casuarina glauca.
April 8.
Next morning I had an opportunity of surveying the hills around me more at leisure, and I noted down their various names from the lips of Barney for that desolate region, where neither a kangaroo nor a bird was to be seen or heard, was poor Barney"s country, that lonely mountain his home!
I learned that the only water in these deserts was to be found in the crevices of rocks on such hills as this; and I thus understood the cause of the smoke I observed last year arising from so many summits when I looked over the same region from a hill on its northern limits. Perhaps within thirty miles around there was no other water, and the bare top of a mountain was certainly one of the last situations where I should have thought of seeking for it.
We descended after I had completed my survey from a hill which perhaps no white man will again ascend; I may however add, for the information of those who may be disposed to do so, that the well is on the crest of a ridge extending north-west from the princ.i.p.al summit, and distant therefrom about 200 yards. I had brought provisions for another day as I originally intended to examine the course of the Lachlan above Mount Torrens; but having seen enough from this hill to satisfy me on that point we retraced our steps to the camp.
April 9.
This day I halted as well to rest the horses as for the purpose of observing equal alt.i.tudes of the sun and protracting my survey.
ASCEND BOLLOON, A HILL BEYOND THE LACHLAN.
April 10.
Leaving the party encamped I crossed the Lachlan and rode eight miles due south to Bolloon which proved to be the highest cone of a low ridge situated within the great bend of this river. I found it a valuable station for continuing my chain of triangles downwards, as from it Mounts Cunningham and Allan, Hurd"s Peak, Peel"s and Goulburn ranges, Mount Granard, etc. are all visible. We pa.s.sed some lower hills belonging to the same chain, and of which the basis seemed to be the prevailing ferruginous sandstone. In my return to the camp I found the dogs had killed an emu.
NATIVES REFUSE TO EAT EMU.
It is singular that none of the natives would eat of this bird; and the reasons they gave were that they were young men, and that none but older men who had gins were allowed to eat it; adding that it would make young men all over boils or eruptions. This rule of abstinence was also rigidly observed by our interpreter Piper.
NATIVE DOG.
Late in the night I was awoke by one of the watch firing a pistol at a native dog which had got close to the sheepfold. At the same moment a sheep leaped out and, having been at the first alarm pursued by our dogs, it was worried in the bed of the river. The native dog having howled as it escaped was supposed to have been wounded. To prevent such occurrences in future and as this arose from a neglect of my original plan, the two fires of the men"s tents were ordered to be again placed in such positions as threw light around the sheepfold, which was of canvas fastened to portable stakes and pegs. (See plan of camp, Volume 1.)
KALINGALUNGAGUY.
April 11.
We left this camp (named Camarba) and continued our journey around the great bend of the Lachlan at which point (4 1/2 miles from our camp) the low ridge of Kalingalungaguy closed on the river. This ridge is a remarkable feature, extending north and south, and I expected to see some tributary from the north entering the river here; but we crossed on the east side of the ridge only a wide, dry and gra.s.sy hollow, which was however evidently the channel of a considerable body of water in times of flood, as appeared by marks on the trees which grew along the banks. All were of the dwarf box kind, named goborro by the natives, a sort of eucalyptus which usually grows by itself on the lower margins of the Darling and Lachlan, and other parts subject to inundation, and on which the occasional rise of the waters is marked by the dark colour remaining on the lower part of the trunk. In the bed of the Lachlan at the junction of the channel near Kalingalungaguy I found quartz rock.
MR. STAPYLTON OVERTAKES THE PARTY.
We had not proceeded far beyond that ridge when Mr. Stapylton overtook the party, having travelled in great haste from Sydney to join us as second in command, in compliance with my letter of instructions sent from Buree. Mr. Stapylton was accompanied by two stockmen, having left his own light equipments at Cordowe, a station above Mount Cunningham. On the plains which we crossed this day grew in great abundance that beautiful species of lily found in the expedition of 1831, and already mentioned under the name of Calostemma candidum,* also the Calostemma luteum of Ker with yellow flowers.
(*Footnote. Volume 1. C. candidum; floribus centralibus subsessilibus, articulo infra medium in pedicellis longioribus, corona integerrima.)
At nine miles we crossed some granite rocks, evidently a part of the ridge of Tarratta, thus exhibiting a uniformity in the granite with the general direction of other ridges, which is about north-north-east. The strike is between north and north-east; the dip in some places being to the west, and in others to the east, at great inclinations. The ridge of Kalingalungaguy consists of quartz, clay-slate, and the ferruginous sandstone, but I observed in the bed of the river a trap-d.y.k.e extending to the Bolloon ridge. Of the few low hills about the Lachlan it may be observed that they generally range in lines crossing the bed of that river. Mount Amyot is a ridge of this sort, being connected to the southward with Mount Stewart and Nyororong; and to the northward with the high ground separating the Bogan from the Goobang; the latter creek also forcing its way through the same chain on its course westward. Mounts Cunningham, Melville, and the small hills about them on each bank belong to another system of ridges of similar character, but more broken up; and the range of Kalingalungaguy with that of Bolloon form a third, also intersected by the river.
OF THE PLAINS IN GENERAL.
The plains appear to be divided into several stages by these cross ridges, which may have shut up the water of high floods in extensive lakes during the existence of which the deposits formed the surface of the present plains. Loose red sand also constantly forms low hills on the borders of these plains; and it seems to have been derived from the decomposition of the sandstone, and may be a diluvial or lacustrine deposit. Blue clay appears in the lowest parts of the basin, and forms the level parts of the plain, with concretions of marl in thin layers.
This has every appearance of a mud deposit; but its depth is greater than the lowest part visible in the channel of the river. The parallel course of small tributaries joining rivers, which seem to be the middle drain of extensive plains, may have been marked out during the deposition of the sedimentary matter as tributaries, on entering the channel of greater streams, immediately become a portion of them; hence it is, the general inclination being common to both, that such tributaries do not cross these sediments of floods now termed plains in order to join the main channel or river now remaining.
CHARACTER OF THE GOOBANG AND BOGAN.
Thus the Goobang, on entering the valley of the Lachlan, pursues a parallel course until the ridge from Hurd"s peak confines the plain on the west and turns the Goobang into the main channel. The Bogan, on the opposite side of the high land, may be said to belong to the basin of the Macquarie, although it never joins that river, but merely skirts the plains which, below Cambelego, may be all supposed to belong to the original bed of the Macquarie. Throughout its whole course of 250 miles the left bank of the Bogan is close to low hills, while the right adjoins the plains of the Macquarie. The basin of the Macquarie, as shown by its course near Mount Harris and Morrisset"s ponds, falls northward, but that of the Darling to the south-west. It is not at all surprising therefore that the course of a tributary so much opposed, as the Macquarie is, to that of the main stream, should spread into marshes: still less that, on being at length choked with the deposit filling up these marshes, it should work out for itself a channel less opposed to the course of the main stream. Duck creek appears to be now the channel by which the floods of the Macquarie join the Darling, and in a course much more direct than that through the marshes. Hence the Bogan also, being still less opposed to that of the Darling, finally enters that river without presenting the anomaly of an invisible channel. In like manner, at a much lower point on the Darling, the course of the little stream named Shamrock ponds, so remarkable in this respect, may be understood. This forms a chain of ponds, or a flowing stream, according to the seasons, between the plains on the left bank of the Darling, and the rising grounds further to the eastward: but instead of crossing the plains to join the main channel this supposed tributary, after approaching within one or two miles of the Darling where its plains were narrow, again receded from it as they widened, and finally disappeared to the left where the plains were broad, so that its junction with the Darling has not even yet been discovered.
On this principle the channel of the Lachlan, as soon as it enters the plains belonging to the basin of the Murrumbidgee, may be sought for on the northern skirts of these plains, although its floods may have been found to spread in different channels more directly towards the main stream.
At 12 1/4 miles we crossed a dry and shallow branch of the river, and at 14 1/2 miles we at length reached the main channel, and encamped where a considerable pond of water remained in it, surrounded by abundance of good gra.s.s. In this hole we caught some cod-perch (Gristes peelii).
April 12.
I sent back three men with two horses to bring on the light cart of Mr.
Stapylton, intending to await its arrival (which I expected would be in five days) at the end of this day"s journey. It was my object to encamp as near as possible to Regent"s Lake without diverging from the route which I wished to follow with the carts, along the bank of the Lachlan.
WANT OF WATER IN THE RIVER.
For this purpose it was desirable to gain a bend of that river at least as far west as the most western portion of the lake, according to Mr.
Oxley"s survey. This distance we accomplished and more; for we were obliged to proceed several miles further than I intended, and along the bank of the river, because no water remained in its bed, until Mr.
Stapylton found a good pond where we encamped after a journey of 16 1/4 miles. Notwithstanding such an alarming want of water in the river, we saw during this day"s journey abundance in hollows on the surface of the plains; a circ.u.mstance clearly evincing that this river, as Mr. Oxley has truly stated, is not at all dependent for its supply on the rains falling here. The deep cracks on the plains, so abundant as to impede the traveller, seemed capable of absorbing not only the water which falls upon them, but also any which may descend from the low hills around.
During our day"s journey I found grey porphyry, the base consisting apparently of granular felspar with embedded crystals of common felspar and grains of hornblende.
April 13.
The night had been unusually warm, so much so that the thermometer stood during the whole of it at 76 degrees (the usual noonday heat) and so parching was the air that no one could sleep. A hot wind blew from the north-east in the morning, and the barometer fell 4/10 of an inch; there were also slight showers.
CUDJALLAGONG OR REGENT"S LAKE.
Leaving Mr. Stapylton in charge of the camp I went with a small mounted party to Cudjallagong (Regent"s lake) which I found to be nine miles to the east-south-east of our tents. We pa.s.sed by the place where Cudjallagong creek first leaves the river and by which this lake is supplied.
NEARLY DRY.
The uniformity of breadth and width in this streamlet and its tortuous course were curious, especially as it must lead the floods of the Lachlan almost directly back from the general direction of their current to supply a lake. Thus the fluviatile process seemed to be reversed here, the tendency of this river being not to carry surface waters off, but rather to spread over land where none could otherwise be found, those brought from a great distance. The particular position of this portion of depressed surface being so far distant from the general course of the river and the communication between it and the river by a backwater so shallow and small, the lake can only receive a small share of the river deposits and this only from the waters of its highest floods. We found the "n.o.ble lake" (as it appeared when discovered by Mr. Oxley) now for the most part a plain covered with luxuriant gra.s.s; some water, it is true, lodged on the most eastern extremity, but nowhere to a greater depth than a foot. Innumerable ducks took refuge there and also a great number of black swans and pelicans, the last standing high upon their legs above the remains of Regent"s lake. We found the water perfectly sweet even in this shallow state. It abounds with the large freshwater mussel which was the chief food of the natives at the time we visited it.
DEAD TREES IN IT.
On its northern margin and a good way within the former boundary of the lake stood dead trees of a full-grown size which had been apparently killed by too much water, plainly showing, like the trees similarly situated in Lake George and Lake Bathurst, to what long periods the extremes of drought and moisture have extended, and may again extend, in this singular country.
ROCKS NEAR IT.