On examining the Wimmera with Piper's assistance I found that it was fordable in some places; but in order to effect a passage with greater facility we took over several of the loads in one of the boats. Thus the whole party had gained what I considered to be the left bank by ten A.M. On proceeding I perceived some yarra trees before me which grew, as we soon discovered, beside a smaller branch, the bottom of which was soft. We had however the good fortune to pass the carts across this branch also. At a quarter of a mile further we came upon another flowing stream, apparently very deep and having steep but grassy banks. The passage of this occupied the party nearly two hours, one of the carts having sunk up to the axle in a soft bank or channel island. While the men were releasing the cart I rode forward and found a FOURTH channel, deep, wide, and full to the brim. In vain did Tally-ho (trumpeter, master of the horse, etc. to the party) dash his horse into this stream in search of a bottom; though at last one broad favourable place was found where the whole party forded at a depth of not more than 2 1/2 feet. Beyond these channels another similar one still obstructed our progress; but this we also successfully forded, and at length we found rising ground before us, consisting of an open plain which extended to the base of the mountains. On its skirt we pitched our tents at a distance of not quite one mile and a half from our last camp; a short journey certainly, but the passage of the five branches of the Wimmera was nevertheless a good day's work. I had frequently observed in the Australian rivers a uniformity of character throughout the whole course of each, and the peculiarities of this important stream were equally remarkable, it being obviously the same we had crossed in three similar channels when on our way to Mount William, twenty miles above this point. The shrubs on the banks at the two places were also similar.
ASCEND MOUNT ZERO.
July 20.
While Mr. Stapylton conducted the party across the plains in a west-south-west direction I proceeded towards Mount Zero, the most western extremity of the mountain range and distant from our camp 8 1/2 miles. I found this hill consisted also of highly micaceous sandstone; the whole being inclined towards the north-west. Having planted my theodolite on the summit I intersected various higher points to the eastward, and also a very remote, isolated hill on the low country far to the northward which I had also seen from Mount William, and from several stations on our route. Several specimens of shrubs and flowers that had not been previously seen by us were gathered on the sides of this rocky hill. Among them was a very singular hairy Acacia covered with a profusion of the most brilliant yellow flowers. In some respects it resembled A. lanigera, but it proved upon examination to be undescribed.*
(*Footnote. A. strigosa, Lindley manuscripts; glanduloso-hirsuta, phyllodiis linearibus v. lineari-oblongis obovatisque uninerviis eglandulosis apice rotundatis mucronatis obliquis, stipulis subulatis villosis, capitulis solitariis sessilibus.)
An isolated mass appeared to the westward, having near its base a most remarkable rock resembling a mitre. Beyond this the distant horizon was not quite so level as the plains of the interior usually are and, as far as I could see northward with a good telescope, I perceived open forest land and various fine sheets of water. I observed with great satisfaction that the Grampians terminated to the westward on a comparatively low country. This was an important object of attention to me then as it comprised all that intervened between us and the southern coast; in which direction I perceived only one or two groups of conical hills. I resolved however, before turning southwards, to extend our journey to the isolated mass already mentioned, which I afterwards named Mount Arapiles. After descending from Mount Zero I proceeded towards the track of the carts and found that the plains, unlike any hitherto seen, undulated so much that in one place I could perceive only the tops of trees in the hollows. On these plains I found small nodules of highly ferruginous sandstone, apparently similar to that which occurs near Jervis Bay and in other places along the eastern coast.
CIRCULAR LAKE, BRACKISH WATER.
Reaching at length a low green ridge of black soil very different from that of the plains, I found it formed the eastern bank of another of those remarkable circular lakes of which I had seen so many near the Murray. The bed of this hollow consisted of rich black earth and was thirty-two feet below the level of the adjacent plain. It seemed nearly circular, the diameter being about three-quarters of a mile. One peculiarity in this lake was a double bank on the eastern side consisting first of a concentric break or slope from the plain, the soil not being clay as usual, but a dry red sand; and then arose the green bank of black earth, leaving a concentric fosse or hollow between. A belt of yarra trees grew around the edge of this singular hollow which was so dry and firm that the carts, in the track of which I was riding, had traversed it without difficulty. I learnt from Mr. Stapylton, on reaching the camp, that the party had previously passed near two other lakes, the largest containing salt water; and in the neighbourhood of these he had also remarked a great change of soil; so that what with the verdure upon it, the undulating surface, and clumps of casuarinae on light soil, or lofty yarra trees growing in black soil, that part of the country looked tolerably well.
THE MACKENZIE AND THE NORTON.
July 21.