12TH JULY.—Returning to the camp, I sought and found, with the assistance of Yuranigh, a more open way through the scrub for our carts, than that by which we had penetrated to the good country. I had directed Mr. Stephenson to examine, during my absence, the western shore of the reedy lake of Salvator, in order to ascertain whether it had any outlet in that direction; but he returned without having reached the base of the remarkable rocky range to the westward; thus leaving it still uncertain, although the direction of the river since discovered, left little reason for supposing that any waters from the valley of the Salvator, could escape to the westward. Thermometer, at sunrise, 11°; in my tent, 15°; at noon, 67° at 4 p.m., 65°; at 9, 35°. Height above the sea, 1107 feet.

13TH JULY.—After marking this camp XLVIII., we quitted the river Salvator, and travelled along our track of yesterday, or nearly N. W., but deviating from this track occasionally, where broken ground or thick scrub was to be avoided. The highest part of the scrubby land we crossed, was 1310 feet above the sea. We arrived in good time at the river, where I had previously slept, and there encamped. On the plains adjacent, the ACACIA PENDULA grew, as on those near the Bogan; and we saw also various new and curious grasses, and some very singular shrubs in the scrub. The banks of the river were steep, and consisted of soft clay. I employed the party to make a bridge across it, and this was well completed before sunset. Thermometer, at sunrise, 23°; at noon, 65°; at 4 p.m. 68°; at 9, 40°. Height above the sea, 951 feet. (XLIX.)

14TH JULY.—Crossing the river, (which I called the Claude), we travelled, first, through an open forest, and then across one of the richest plains I had ever seen, and on which the ANTHISTIRIA AUSTRALIS, and PANICUM LOEVINODE, the two best Australian grasses, grew most abundantly. The soil was black; the surface quite level. There might have been about a thousand acres in the first plain we crossed, ere we arrived at another small river, or water-course, which also contained water. We soon reached the borders of other very extensive plains and open downs, apparently extending far to the eastward. On our left, there was a scrub of Acacia pendula. The undulating parts of the clear land, were not so thickly covered with grass as the plains, not because the soil was bad, but because it was so loose, rich, and black, that a sward did not so easily take root and spread upon it, from its great tendency to crack, after imbibing moisture, on its subsequent evaporation. All this rich land was thickly strewed with small fragments of fossil wood, in silex, agate, and chalcedony. Many of the stones, as already observed, most strikingly resembled decayed wood, and in one place the remains of an entire trunk lay together like a heap of ruins, the DILAPIDATED remains of a tree! I obtained even a portion of petrified bark; but specimens of this were rare. The elevation of the highest part of these downs, was 1512 feet above the sea.

Crossing an open forest hill, which had hitherto bounded our view to the westward, I perceived a deep grassy valley on our right, sloping towards a much lower country, but I still travelled westward, in hopes to find an open country, beyond a low woody range on which we had at length arrived. I soon, however, perceived rocky gullies before me, and having halted the party to examine them, I found they were quite impassable. Such an unexpected obstacle, on the horizon of the fine open country, yet UNDER that smooth horizon, was certainly as singular as it was unexpected, and I returned to descend into the deep grassy valley I had seen on our right, which seemed open and inviting. We therein also found some large ponds of water, and encamped. While the men were pitching the tents I rode down the valley about two miles, and found that the direction of the water-course was about north-east. Such a direction was not very favourable for us, and I resolved to look at the country beyond the limits of this valley to the westward, before we followed it further. Latitude, 24° 17' 42" S. Thermometer, at sunrise, 19°; at 4 p.m., 66°; at 9, 49°. (L.) 1279 feet above the sea.

15TH JULY.—Following up a flat which came from the N. W., I proceeded about five miles amid overhanging precipices, until, at length, mighty rocks rendered it quite impossible to push my horse further. Leaving him in a hollow, I ascended a rocky point, which was barely accessible with Yuranigh's assistance, and, on reaching an elevated summit, I saw still worse gullies before us, amongst which I could perceive no feature affording any cue to their final outlet, nor any characteristic of the structure of these labyrinths. I looked in vain for the rugged summits I had seen peeping over the plains when first discovered, and could not then be convinced (as I found long afterwards, on completing my map), that they were then under my feet. The highest parts seemed to extend south-westward. To cross such a region with our carts, was quite impossible, and I could only return, and, however reluctantly, follow down the valley in which we had encamped, until it should afford access to a more open country. The banks of the watercourse were steep, the bottom was sandy. The course was very tortuous, alternately closing on rocky precipices, at each side of the valley. Thus we were obliged to cross at every turning, and the steep banks rendered each crossing a difficult operation, occasioning so much delay, that after crossing ten times, evening obliged us to encamp, although our direct distance from the last camp did not exceed five miles. We had, at each crossing, cut the banks, filled up hollows with logs, etc. The general direction, I ascertained to be N.E. Water was found providentially near the spot, where the approach of night had obliged us to encamp; this having been the first water we had seen during that day's laborious journey. Thermometer, at sunrise, 21°; at 4 p.m., 65°; at 9, 44°.

16TH JULY.—After some examination of the valley before us, I considered it best, upon the whole, to travel in the bed of the river itself, and thus avoid the frequent necessity for crossing with so much labour and delay: the sandy bed was heavy for the wheels, and therefore distressing to the animals, and one or two rocky masses obliged us to work out of it, to get round them. The whole day was consumed in proceeding thus about 5½ miles, and in an easterly direction. The closing in of the valley lower down, seemed to shut us from further progress even so, and I encamped, rather at a loss how to proceed. Just then Mr. Stephenson came to inform me that he had seen, from a rocky point on the left, an opening to the north-west, and level ground beyond it. I therefore determined to accompany him next day, and to reconnoitre the country in that direction. By digging in the bed of the creek, water was again obtained by Corporal Graham. Some extremely fragrant shrubs were discovered in these rocky recesses, especially one, which filled the air with perfume to a great distance around. It seemed to be a EUCALYPTUS without flowers or fruit, but with a powerful odour of balm, and formed a bush five feet high, growing on sandstone rocks, having a narrow leaf, and rather thorny stalk. The lower leaves were also rough.[*] There was another bush, with leaves of the same shape, and glossy, but having a perfume equally strong of the lime.[**] We regretted much, that neither the seed, flower, nor fruit of these interesting shrubs could be obtained at that season. In that valley, we saw also the DAUCUS BRACHIATUS, an inconspicuous weed, and MYOPORUM CUNNINGHAMII. The soft leaved ACACIA PODALYRIOEFOLIA began to indicate its flowering season, and we found a magnificent new crimson CALLISTEMON with its young flowers and leaves wrapped in wool.[***] A new DODONOEA with wingless, 3-cornered, 3-celled fruit[****]; a new species of AOTUS, with narrow hoary leaves[*****], and one of the forest trees was a splendid new GEIGERA, with broad lance-shaped leaves.[******] The PLATYZOMA MICROPHYLLUM, a very singular and little known fern, with narrow leaves and small orbicular leaflets, was also there, with the ACACIA FALCATA, ACACIA EXCELSA, and a shaggy-leaved variety of the AJUGA AUSTRALIS, the Australian bugle. The BRUNONIA SERICEA, with its scabious-like heads of flowers, was common; and the blue flowered HARDENBERGIA MONOPHYLLA was observed among the grass. Thermometer, at sunrise, 25°; at 9 p.m., 41°.

[* E. MELISSIODORA (Lindl. MS.); ramis ferrugineo-tomentosis scabris, foliis utrinque papillis rubiginosis scabris ovato-oblongis obtusis supra basim peltatis (floribus fructibusque ignotis).]

[** E. CITRIODORA (Hook. MS.); ramis angulatis fuscis minute tuberculatis, foliis lato-lanceolatis petiolatis pinnulatis patenti-parallelo-venosis viridibus (non glaucis). Sir Wm. Hooker has ventured to name this EUCALYPTUS, though without flower or fruit, from the deliciously fragrant lemon-like odour, which exists in the dry as well as the recent state of the plant.]

[*** C. NERVOSUM (Lindl. MS.); ramis pallidis, foliis ovato-lanceolatis quinque-nerviis mucronatis junioribus tomentosis, rachi calycibusque lanatis.]

[**** D. TRIGONA (Lindl. MS.); ramulis subpilosis, foliis obovato-lanceolatis parum pilosis integerrimis vel utrinque unidentatis, capsulis 3- locularibus trigonis apteris.]