March 10.--We had slight drizzling showers towards sunset; the night very cloudy till about ten a.m., when it cleared up. The variety of grasses is very great; the most remarkable and succulent were two species of Anthistiria, the grass of the Isaacs, and a new one with articulate ears and rounded glumes. A pink Convolvulus, with showy blossoms, is very common. Portulaca, with terete leaves, grows sparingly on the mild rich soil.
Were a superficial observer suddenly transported from one of the reedy ponds of Europe to this water-hole in Suttor Creek, he would not be able to detect the change of his locality, except by the presence of Casuarinas and the white trunks of the majestic flooded-gum. Reeds, similar to those of Europe, and Polygonums almost identical as to species, surround the water, the surface of which is covered with the broad leaves of Villarsia, exactly resembling those of Nymphaea alba, and with several species of Potomogeton. Small grey birds, like the warblers of the reeds, flit from stem to stem; hosts of brilliant gyrinus play on the water; notonectes and beetles, resembling the hydrophili, live within it--now rising to respire, now swiftly diving. Limnaea, similar to those of Europe, creep along the surface of the water; small Planorbis live on the water-plants, to which also adhere Ancylus; and Paludina, Cyclas, and Unio, furrow its muddy bottom. The spell, however, must not be broken by the noisy call of a laughing jackass (Dacelo gigantea); the screams of the white cockatoo; or by the hollow sound of the thirsty emu. The latitude of this spot was 21 degrees 23 minutes S.
I examined the country northward for about five miles, crossing some small undulating or hilly downs of a rich black soil, where the Phonolith frequently cropped out. There were occasional tracts of "devil-devil" land, and patches of scrub, which, at no great distance, united into one mass of Bricklow. Tracing a little creek to its head, I crossed ridges with open forest. Mr. Gilbert and Charley returned, after having found, as I anticipated, a considerable watercourse at the foot of the westerly range. Suttor Creek was afterwards found to join this watercourse, and, as it was its principal tributary, the name was continued to the main stream.
March 12.--In travelling to Mr. Gilbert's discovery, we crossed large plains, and, at the end of six miles, entered into thick scrub, which continued with little interruption until we reached the dry channel of the Suttor. This scrub, like those already mentioned, varies in density and in its composition; the Bricklow acacia predominates; but, in more open parts, tufts of Bauhinia covered with white blossoms, and patches of the bright green Fusanus and silvery Bricklow, formed a very pleasing picture. The bed of the Suttor was rather shallow, sandy, and irregular, with occasional patches of reeds; its left bank was covered with scrub; but well grassed flats, with Bastard-box and Ironbark, were on its right. We encamped near a fine reedy water-hole, nearly half a mile long, in lat. 21 degrees 21 minutes 36 seconds. We had travelled about fifteen miles west by north from our last camp. Throughout the day the weather was cloudy and rainy, which rendered the tedious passage through the scrub more bearable.
March 13.--We proceeded six or seven miles down the river, in a S.S.W. course. The flats continued on its right side, but rose at a short distance into low ridges, covered either with scrub or with a very stunted silver-leaved Ironbark. On one of the flats we met with a brood of young emus, and killed three of them. The morning was bright; cumuli gathered about noon, and the afternoon was cloudy. The wind was from the eastward. The Suttor is joined, in lat. 21 degrees 25 minutes, by a large creek from the N.W. From the ridges on the left bank of the creek I obtained an extensive view. The bluff termination of the ranges on the head of the Isaacs bore N. 55 degrees E. Many high ranges were seen towards the north and north-east. Towards the south the horizon was broken only by some very distant isolated mountains. Peak Range was not visible. A group of three mountains appeared towards the north-west; one of them had a flat top. The whole country to the westward was formed of low ridges, among which the Suttor seemed to shape its winding course. The hills on which we stood, as well as the banks of the creek, were composed of flint-rock. Pebbles and blocks of Pegmatite covered the bed of the creek. This rock also cropped out along the river. This was the first time since leaving Moreton Bay that we met with primitive rocks, and I invite the attention of geologists to the close connection of the flint rock with granitic rocks; which I had many opportunities of observing in almost every part of the northern and western falls of the table land of New England.
A Melaleuca with very small decussate leaves, a tree about twenty-five feet high, was growing on the scrubby ridges. Flooded-gums of most majestic size, and Casuarinas, grew along the river; in which there were many large reedy water-holes. The season must be more than usually dry, some of the largest holes containing only shallow pools, which were crowded with small fishes, seemingly gasping for rain. A Ruellia, with large white and blue flowers, adorned the grassy flats along the Suttor. The latitude of this spot was 21 degrees 26 minutes 36 seconds.
March 14.--We removed down the river about eight miles S. S. W. to good water-holes, which had been seen by my companions the day before. Here the scrub approached the river, leaving only a narrow belt of open forest, which was occasionally interrupted by low ridges of stunted silver-leaved Ironbark. Pegmatite and Porphyry (with a very few small crystals of felspar) and Gneiss? were observed in situ. On our way we passed a fine lagoon. A dry but not hot wind blew from the S. S. W.; the night and morning were bright; cumuli with sharp margins hung about after eleven o'clock.
A pelican was seen flying down the river, and two native companions and an ibis were at the water-holes. Crows, cockatoos, and ducks were frequent. From the remains of mussels about these water-holes, the natives have enjoyed many recent meals.
I sent Mr. Roper and Charley down the river, who informed me, on their return late at night, that they had found water at different distances; the farthest they reached was distant about seventeen miles, in a water-hole near the scrub; but the bed of the river was dry. As they rode, one on the right and the other on the left side of the river, a Blackfellow hailed Charley and approached him, but when he saw Mr. Roper--who crossed over upon being called--he immediately climbed a tree, and his gin, who was far advanced in pregnancy, ascended another. As Mr. Roper moved round the base of the tree, in order to look the Blackfellow in the face, and to speak with him, the latter studiously avoided looking at Mr. Roper, by shifting round and round the trunk like an iguana. At last, however, he answered to the inquiry for water, by pointing to the W. N. W. The woman also kept her face averted from the white man. Proceeding farther down the river they saw natives encamped at a water-hole, who, as soon as they became aware of the approach of the two horsemen, withdrew with the greatest haste into the scrub; the men driving the shrieking women and children before them. Upon Mr. Roper galloping after them, one athletic fellow turned round and threatened to throw his bommerang, at this sign of hostility Mr. Roper prudently retired. Kangaroo and other nets made of some plant and not of bark, koolimans, bommerangs, waddies, and a fine opossum cloak were found at the camp, but were left untouched by our companions.
March 15.--Our party moved to the water-holes, where Mr. Roper had seen the natives; the latter had removed their property, and were not afterwards heard or seen by any of us. The general course of the river was about south-west, and is joined by several scrub creeks; its bed is broad and shallow, with numerous channels, separated by bergues; and the river itself is split into several anabranches. The scrub is generally an open Vitex; a fine drooping tea-tree lines the banks of the river; Casuarina disappears; the flooded-gum is frequent, but of smaller size. The Mackenzie-bean and several other papilionaceous plants, with some new grasses, grow in it. The most interesting plant, however, is a species of Datura, from one to two feet high, which genus has not previously been observed in Australia. I also found species of Heliotropium of a most fragrant odour.