By a mere accident, we discovered a remarkable medicinal property of the glutinous secretion of the seed-vessels of a drooping Grevillea. John Murphy, having no pockets in his trowsers, put the seeds which he found during the stage into his bosom, close to the skin, where he had already deposited a great number of Sterculia, and was much inconvenienced by the starry prickles which surround the seeds. Afterwards, finding the drooping Grevillea in fruit, he gathered some capsules and placed them as before stated. Upon arriving at the camp, he felt great pain; and, on examining the place, he saw, to his greatest horror, that the whole of the skin of the epigastric region was coloured black, and raised into a great number of painful blisters. Upon his showing it to me, I thought that it was caused by the Sterculia prickles having irritated the skin, and rendered it more sensitive to the sharp properties of the exudation of the seed-vessels of Grevillea. Brown, however, merely touched the skin of his arm with the matter, when blisters immediately rose; showing clearly its properties. The discoloration of the skin was like the effects of nitrate of silver.
Sept. 24.--When Charley returned with the horses from a higher part of the river, he told us that he had seen so many wallabies and such numerous tracks of emus and crocodiles, that I sent John and Brown to procure some game. They returned with only a red wallabi (Halmaturus agilis) and a spoonbill. According to their account, the river enlarged into an immense sandy bed, like that of the Lynd, and was covered with trees and shrubs, very much resembling those of that river. Its course was from the westward; and in that direction large plains extended. They had seen three crocodiles, one of which lay in the shade of a Sarcocephalus tree. The bean of the Mackenzie grew plentifully along the river, and was covered with ripe seeds. In the morning of the 25th, I sent John and Brown to collect as many of them as they could, for coffee; whilst I and Charley went to reconnoitre the country for water. A W.N.W. course brought us so much into sandstone ranges, gullies, and heads of creeks, that we turned to the northward, until we came again into the open box and tea-tree forest, mixed with bloodwood and gum. About four miles from the camp, we found water-holes supplied by springs, and which had just been left by the natives, who were busy in burning the grass along the ridges, and on the fine intervening flats. It was here that I again met with a species of Banksia, on the sandy flats immediately below the sandstone ranges, which was either a variety of B. integrifolia, or a species very nearly allied to it. We found it afterwards all over Arnheim's Land, especially on the table land and on the rocky heads of the South Alligator River, where it grew on sandy flats surrounding the rocks, and particularly round sandy swamps. The Cypress-pine and Pandanus were frequent, but Sterculia was rare. We remarked that the little finches generally anticipated us in the harvest of the ripe fruit of the latter. About eight miles from the springs, after crossing a great number of small dry sandy watercourses, we came to a fine creek with two large Nymphaea ponds.
On our return, we ran down an emu, the stomach of which was full of the fruit of the little Severn tree. The meat of the whole body was so exceedingly bitter, that I could scarcely eat it. Brown and John had returned with a good supply of beans, and of the large eatable roots of a Convolvolus growing on the plains. The former allowed us again a pot of coffee at luncheon for the next three weeks. This coffee had at first a relaxing effect, but we soon became accustomed to it, and enjoyed it even to the grounds themselves.
Sept. 26.--We removed our camp to the water-holes I had found the day before. We crossed the river at the head of the salt water, where the shallow stream of fresh water was about fifteen yards broad. Sandstone ridges were all round our last camp, and on the opposite side of the river, where it was joined by a deep Pandanus creek. John Murphy told me that he shot a fish at the crossing place, which had the first ray of the dorsal fin very much prolonged, like one of the fresh-water fishes of Darling Downs; they had been in such a hurry to roast it, that I had no chance of examining it.
The day was exceedingly hot, particularly from 7 to 11 o'clock, when the strong sea breeze set in from the north-east.
Sept. 27.--I went with Brown to reconnoitre the country to the north-west. About a mile from the camp, we crossed a fine creek with a chain of ponds and a tiny stream densely fringed with Pandanus. To the north-west of it, we rode through a succession of scrubby and open stringy-bark forest of tea-tree flats and thickets, and over long tracts of stringy-bark saplings which had been recently burned. The Melaleuca gum was very frequent in the stringy-bark forest: the Cypress-pine formed either small thickets or occurred scattered. Sterculia, which at the time was particularly valuable to us, was rare.
Red ironstone cropped out every where, and formed large shallow basins, surrounded by tea-tree thickets; like those swamps I have mentioned on several occasions. About eight miles from the camp, we crossed a good sized waterless creek, with drooping tea-trees, and groves of Pandanus; and about three miles farther, came to a large creek with some very long water-holes, which were all stocked with small fish. On our return, it became so dark that we missed our tracks; and, by keeping too much to the eastward, we came to a very wild rocky country, in which the large Pandanus creek, as well as that on which we were encamped, changed their character so much that we crossed without recognising them. We encamped out, and the next morning, the 28th, we changed our course to the southward, which brought us to a little hill we had passed two days before, and which Brown immediately recognised: thus affording another instance of the quickness of his eye, and of his wonderful memory for localities. We returned on our former bullock tracks to the camp; and having taken some breakfast, and loaded our bullocks, we immediately started for the water-holes, which were situated about eleven miles to the north-west, in lat. 15 degrees 47 minutes 23 seconds.
Sept. 29.--I reconnoitered with Charley in a north by west course, and travelled through a most wretched country. Cypress-pine thickets alternated with scrubby stringy-bark forest, acacia and tea-tree thickets, and with broad tea-tree forest. The Bossiaea with broad leafless stem, was one of the principal components of the scrub. About eight miles from our camp, we crossed a small creek with good water-holes; and at four miles and a half further, came to a river with several channels, separated by high and irregular bergues, with a sandy bed containing large pools of water surrounded with water Pandanus and drooping tea-trees. Acacia neurocarpa, and a species of Cassia, which we had observed since leaving Seven Emu River, grew on the sands. After giving our horses a short rest, during which we refreshed ourselves with a pot of Sterculia coffee, we returned towards our camp; but, wishing to find a more open road, kept more to the eastward, and came sooner than I expected to Sterculia Creek: which name I had given to the creek on which we were encamped, in reference to the groves of Sterculias of both species, rose-coloured as well as heterophylla, which grow on its banks. We followed it up for seven miles, when the setting sun, and our great fatigue, induced us to stop. The creek changed its character every quarter of a mile, forming now a broad sandy or pebbly bed, then a narrow channel between steep banks; and again several channels, either with fine water-holes, or almost entirely filled up and over-grown with a scanty vegetation. On the banks, thickets alternated with scrubs and open country, and, lower down, the country became very fine and open. Early in the morning of the 30th, we started again, and arrived at the camp after a long ride, both hungry and tired.