Journals of Australian Explorations Part 39

The temperature was lower at sunrise this morning than on any other day since landing in North Australia, being only 41 degrees. A little dew on the gra.s.s, and a light air from the east. At 6.50 a.m. started and followed up the creek to the east-north-east till 1.0 p.m., when we camped at a deep pool of water 20 yards wide and 200 yards long. Our attempts to procure fish were unsuccessful. The country consisted of low stony hills, thinly wooded, and the flats of the creek from a quarter to three quarters of a mile wide continued to be well gra.s.sed. On the north side of the creek a few miles back the hills rose to a greater elevation, and formed table-topped hills; some with cliffs of sandstone near the summits, and others smooth gra.s.sy slopes. The latter, from the colour of the gra.s.s, appeared to be of trap formation, and fragments of this rock were found in the bed of the creek. Soft shales were exposed in the gullies and on the sides of the hills, and were overlaid compact gray sandstones.

Lat.i.tude by b Centauri, a2 Centauri and Arcturus 15 degrees 37 minutes 15 seconds.

28th June.

Left the camp at 7.15 a.m., and followed up the creek to the east-north-east till noon, when we reached the last water in its channel near a steep range of sandstone hills, or rather tablelands; the country traversed was an undulating plain of trap formation resting on gray sandstone; it is thinly wooded, and well gra.s.sed; water was abundant in the creek below the camp; above the channel was dry, and soon divided into small gullies; in the afternoon ascended a hill three-quarters of a mile north-west of the camp; the lower portion was a dark compact trap or basalt, and the summit a horizontal bed of sandstone about 200 feet above the camp; the country to the north was very level, and only occasionally interrupted by flat-topped sandstone hills, the view extending at least thirty miles; to the south and south-west a country of trap formation extended for twenty miles, and to the east the tableland rose about 300 feet above the camp, and was composed of the same strata as the hill ascended, but surmounted by the ferruginous conglomerate, which is the highest rock of the new red sandstone series.

Lat.i.tude by b Centauri, a Centauri and Arcturus 15 degrees 33 minutes 13 seconds.

ARNHEIM LAND. DALY RIVER.

29th June.

At 6.45 a.m. left the camp with Mr. H. Gregory to reconnoitre the country to the east; ascending the tableland, steered east till 10.0 through a level forest of stringybark and other eucalypti; the soil a light gravelly loam, but well gra.s.sed; we then turned north-north-east for one hour, along a shallow watercourse, and then east through level forest country till 3.20 p.m., when we reached a small stream-bed trending north-north-east, tracing it through wide gra.s.sy flats, which were on fire; at 4.40 found a small pool of water, where we halted for the night.

30th June.

As this appeared to be a spot to which the party could be advanced with safety, we left our bivouac at 6.50 a.m.; returning across the tableland, reached the camp at 4.30 p.m.

1st July.

At 6.40 a.m. started an average course of 80 degrees magnetic, and reached the waterholes in the small creek at 3.30 p.m. with the whole party, and camped at our bivouac of the 29th June.

Lat.i.tude by b Centauri 15 degrees 30 minutes 19 seconds.

2nd July.

At 6.30 a.m. left the camp and followed the creek down to the east-north-east till 11.0 a.m.; it then turned more to the northward, and was nearly lost in wide level flats covered with high gra.s.s; the back country level stringybark forest, with good gra.s.s; at 2.25 p.m. the channel of the creek again collected, and we found a small waterhole twenty yards long and four feet deep, at which we camped; here we observed the fires of a party of blacks who had camped at the waterhole the previous day; small heaps of mussel-sh.e.l.ls lay at intervals along the banks of the creek, though the channel was perfectly dry; but it appears that during the last wet season less rain has fallen than usual, and the soil has not been fully saturated, and consequently the waterholes have dried up sooner than in average years; although from the level character and geological features of the country, we are now on the tableland which divides the waters flowing to the north-west coast from those which fall into the Gulf of Carpentaria, the elevation of the country does not exceed 800 feet above the sea.

Lat.i.tude by Centauri and Arcturus 15 degrees 18 minutes 33 seconds.

3rd July.

Starting at 7.30 a.m., followed the creek to the north-east by east till 8.25, when it was joined by a small creek from the south; thus increased water was abundant in the bed of the creek, but the pools were shallow and not permanent. Gra.s.sy flats extended for a mile on each bank of the creek, beyond which the level forest of stringybark, bloodwood, and box was well gra.s.sed; the soil a good red loam. In a few spots fragments of limestone and agate were strewed over the surface, and an occasional ridge of ironstone conglomerate was crossed on which the gra.s.s was indifferent. At 12.45 p.m. camped in a wide gra.s.sy flat, where the gra.s.s, having been burnt early in the season, had sprung up again quite fresh and green.

Lat.i.tude by a2 Centauri 15 degrees 11 minutes 24 seconds; variation of compa.s.s 2 degrees 10 minutes east.

4th July.

We were again in the saddle at 7.10 a.m., and, steering 70 degrees magnetic, diverged from the creek, traversing a level gra.s.sy forest of stringybark with abundance of green gra.s.s; at 8.0 turned north-east; the forest became more open, and the stringybark was replaced by bloodwood and box; limestone rock was frequent, and rendered the surface of the country very rough; and frequent depressions of the surface appeared to result from the falling-in of the roofs of caverns beneath which were farther indicated by deep clefts and holes in the rock, into which the surface waters flow during the rains. At 11.0 a.m. turned north, and at noon again struck the creek, which gradually turned to the north-north-east; limestone formed the banks, and only one small pool was seen till 4.50 p.m., when we found a little water in the sandy bed of a tributary creek from the south-south-east, at which we encamped. On the bank of the creek we this day first observed the casuarina, which is so frequent on the banks of the creeks trending towards the Gulf of Carpentaria.

Lat.i.tude by Arcturus and a Coronae Borealis 14 degrees 54 minutes 2 seconds.

5th July.

As the course of the creek was to the north-west, and we had already been driven further north than was desirable, we left the creek and followed up the tributary to the east-south-east, leaving the camp at 7.5 a.m. The channel was soon lost on the wide gra.s.sy flats, in one of which was a fine waterhole covered with nymphae, near which a party of blacks were encamped. On our approach most of the women decamped with their bags and nets containing their valuables, while the men stood spear in hand gazing on the strange sight, as we pa.s.sed them. Continuing up the creek, the course of which was only marked for some distance by the nature of the vegetation, which indicated occasional inundations, it again formed a shallow irregular channel in the centre of an open box flat, and at 1.30 p.m. camped at a small waterhole in the channel.

Lat.i.tude by meridian alt.i.tude of the sun 14 degrees 55 minutes 15 seconds.

TABLELAND.

6th July.

The small size of the creek affording little prospect of water nearer to its source, and as Mr. H. Gregory was suffering from a severe attack of fever, which rendered travelling unadvisable, I proceeded with Charles Dean to examine the country to the east-south-east. Leaving the camp at 7.0 a.m., steered 120 degrees magnetic; at eight crossed a sandstone ridge covered with acacia scrub, and again descended into the valley of the creek, pa.s.sing some fine gra.s.sy plains, and at 11.0 ascended the level tableland, the edge of which was covered with acacia scrub, beyond which we pa.s.sed a level flat acacia scrub and small trees, and at noon entered a stringybark forest with occasional patches of bloodwood, leguminous ironbark, and sterculia. The soil varied from a brown loam to ironstone gravel, and in a few spots ferruginous conglomerate was visible. On the loamy soil the gra.s.s was good and abundant, but the gravel was covered with spiny treraphis. This tableland was so level that no declivity could be detected during the continuance of our day's journey, which lasted till 5.30, when we bivouacked without water; by taking the precaution of letting the horses feed on the outward track, and secreting ourselves after dark in the high gra.s.s, we pa.s.sed the night without the necessity of keeping watch after midnight.

7th July.

Our horses having strayed back on the track, we carried our saddles and tracked them about two miles, and then mounting our horses steered north for some miles; but all was level forest without any sign of the existence of water, except a few c.o.c.katoos. I then turned to the south-west; crossing the outward track, and at length came on a shallow watercourse trending west, a ridge of rocks having confined the channel to a narrow s.p.a.ce; three small waterholes were discovered in which a little water remained; below this the creek turned south-south-east, and I again turned towards the camp; but night overtaking us in the stringybark forest, we pa.s.sed to the south of the camp without observing its position.

8th July.

Having ascertained that we had pa.s.sed the position of the camp, turned to the north-east and reached the camp at 11.20. Mr. H. Gregory was somewhat recovered, but very weak from a violent attack of fever. During my absence a small party of blacks had visited the camp and had bivouacked a short distance up the creek.

9th July.

Moved the camp to the waterholes twelve miles south-east, and in the afternoon rode down the creek with Mr. Elsey; the creek turned to the south-south-east for a mile and a half, and was lost on a level flat, from which a channel trended to the west, which was again lost in a level flat extending to the west several miles. Heavy showers at night.

CIRc.u.mCISION PRACTISED.

10th July.

Accompanied by Mr. Elsey, I proceeded to reconnoitre the country to the south-east, and at 7.45 a.m. steered 130 degrees, gradually ascending the tableland, and which was openly wooded with bloodwood, box, and white-gum; acacia and sterculia occasionally appearing. The soil was brown sandy loam with a few ridges of sandstone rock of white colour; gra.s.s had been abundant, but was now burnt off. The small white-ant nests from two to five feet high were very numerous; at 12.40 p.m. a slight depression in the country was observed, and limestone appeared, and deep hollows were frequent. One of these hollows which I examined was thirty yards in diameter and fifteen feet deep; in the centre was a deep cleft of fifteen feet more, which extended to the east and west under the surface with a width of three feet; at 3.0 struck a small creek trending east-north-east with a few small pools of water in the channel; in following down the creek in search of a sufficient supply of water for the horses, we pa.s.sed some blacks sitting at a fire near the creek; at 3.30 came to a pool sufficient for the supply of the whole party, below which the channel was dry; returning to the pool we met the blacks following our tracks, but, observing us, they ran away, and on being followed hid themselves; having unsaddled, we commenced our dinner and soon saw the blacks watching us from their hiding places, and after some time spent in making signs, they were induced to approach, the oldest of the party feigning to weep bitterly till they got close to us, when we commenced an attempt at conversation, and they appeared to recognise some few words of the language of the Victoria River. Their spears were formed of reeds with large heads of white sandstone, and also with three wooden points for fis.h.i.+ng. They were circ.u.mcised and had their front teeth remaining; at 5.0 steered to the west-north-west for one hour, and bivouacked to secure ourselves from an attack during the night.

11th July.

At 6.30 a.m., resumed our route towards the camp, and reached it about 1.0 p.m., without observing anything of farther remark.

Lat.i.tude by a2 Centauri 15 degrees 2 minutes 49 seconds.

ABSENCE OF WATERCOURSES.

12th July.

The gra.s.s near the camp having been burnt off, the horses had scattered very much, and could not be collected and saddled before 10.0 a.m., when we followed our track of yesterday and reached the pool of water at sunset. The country was so level, although we were crossing the watershed between the north-west coast and the Gulf of Carpentaria, that the aneroid only varied from 29.55 to 29.62, and even of this change the greater part was caused by alteration of the temperature. The geological character of this portion of the country differs slightly from that of the Victoria River. The upper stratum is a bed of ironstone conglomerate about twenty feet thick, this rests on sandstone, the upper part of which is highly ferruginous, then pa.s.ses away into a variegated sandstone imperfectly stratified, changing into a hard siliceous sandstone which is white and breaks with a conchoidal fracture; this rests on a hard cherty sandstone similar to that of the Victoria River. In this rock many depressions occur, which is apparently caused by the roofs of caverns falling in and there are usually deep fissures in the rock at the bottom of these hollows, in which all the water that drains into them is absorbed; in some places the sandstone resting on the limestone has sunk many feet below the general level, with areas varying from one to ten acres, sometimes sloping towards a centre ten to thirty feet below the plain, and in other spots with abrupt rocky banks five to eight feet high and a perfectly level bottom. The level character of the country is unfavourable for investigations of this nature, and the thickness of the several strata not easily determined; but I think that the collective thickness of the several strata above the limestone does not exceed 100 feet. The porous nature of the lower rocks preclude the existence of permanent surface water by draining the whole of the upper part of the tableland, while it forms strong springs in the lower ground towards the banks of the Roper River, where the limestone is exposed on the surface.

Lat.i.tude by a Coronae Borealis 15 degrees 14 minutes 31 seconds.

WHITE MAN'S CAMP.

13th July (Sunday).

Leaving the camp at 8.30 a.m., proceeding down the creek, mistook a tributary for the main creek; following it south for two hours, when it spread into small gullies, and we had to return to the creek, which had now a northerly course, and at 4.25 camped about three miles from our starting point in the morning. The country pa.s.sed over was of a very poor character, stiff clay flats, with melaleuca scrub in the valley, while low but steep ridges of sandstone rose to the east, and were timbered with stringybark and bloodwood, etc.; to the south the country seemed to rise slightly, but was very poor and sandy. The smoke of bush fires were visible to the south, east, and north, and several trees cut with iron axes were noticed near the camp. There was also the remains of a hut and the ashes of a large fire, indicating that there had been a party encamped there for several weeks; several trees from six to eight inches diameter had been cut down with iron axes in fair condition, and the hut built by cutting notches in standing trees and resting a large pole therein for a ridge; this hut had been burnt apparently by the subsequent bush fires, and only some pieces of the thickest timber remained unconsumed. Search was made for marked trees, but none found, nor were there any fragments of iron, leather, or other material of the equipment of an exploring party, or of any bones of animals other than those common to Australia. Had an exploring party been destroyed here, there would most likely have been some indications, and it may therefore be inferred that the party had proceeded on its journey. It could not have been a camp of Leichhardt's in 1845, as it is 100 miles south-west of his route to Port Essington, and it was only six or seven years old, judging by the growth of the trees; having subsequently seen some of Leichhardt's camps on the Burdekin, Mackenzie, and Barcoo Rivers, a great similarity was observed in regard to the mode of building the hut, and its relative position in regard to the fire and water supply, and the position in regard to the great features of the country was exactly where a party going westward would first receive a check from the waterless tableland between the Roper and Victoria Rivers, and would probably camp and reconnoitre ahead before attempting to cross to the north-west coast.

This creek is named Elsey Creek on the map.

ELSEY CREEK.

14th July.

Resuming our journey at 8.10 a.m., steered north-east down the valley of the creek, which I named Elsey Creek, after the surgeon of the expedition. Its course was generally to the north-east, but spreading into lagoons and swampy flats, became very tortuous and irregular. It then changed to a very winding reach of water fifty to sixty yards wide, with low banks covered with reeds and tall melaleuca-trees, beyond which was a belt of panda.n.u.s growing on the drier ground. Many small springs rose in the limestone rock and ran into the creek, on the banks of which large quant.i.ties of mussel-sh.e.l.ls showed the frequent camps of the blacks. The banks of the creek and springs were so soft and boggy that our horses could not approach the water, and we followed its banks in search of a spot where they could drink in safety, till 4.0, without success, and having camped, had to water the horses with our leather buckets.