6TH FEBRUARY.—Dark stratus-shaped clouds wholly covered the sky, and shut out the sun, to my unspeakable delight. A most decided change seemed to have taken place; still the barometer remained as low as on the previous evening. A slight breeze from south-east changed to north, and at about 7 a.m. the rain began to fall. Clouds of nimbus closed on the woody horizon, and we had a day of rain. In the evening the barometer had fallen still lower, and it was probable that the rain might continue through the night. Range of thermometer from 74° to 72°.
7TH FEBRUARY.—Some heavy showers fell during the night, and the mercurial column stood exactly at the same point as on the last evening. About 10 a.m. a very heavy shower fell, after which the sun broke through, and the mass of vapour separated into vast clouds of nimbus. Much rain seemed to be still falling in the east, where the Macquarie, Bogan, and other rivers had their sources. At noon, the barometer had risen one millimetre. The rain had penetrated the clay soil of the plains about five inches.
Mr. Kennedy returned in the afternoon, having duly provided for Piper's conveyance by the mounted police to Bathurst, and brought back a good bull-dog, and also some useful information respecting the various water-courses, and the river Macquarie, which he had gathered from the natives about the stations along the banks of that river. Thermometer at sunrise, 74°; at noon, 86°; at 4 p.m., 90°; at 9, 80°;—with wet bulb, 75°.
8TH FEBRUARY.—The moisture recently imbibed by the earth and air made us much more sensible of the high temperature in which we had been living, although it had been reduced by the late rains. The night air, especially, breathed no refreshing coolness as heretofore during the dry heat. The drier earth below seemed to be steaming the wet soil above it (as Brown, our cook, justly observed). Thermometer at sunrise, 80°; at noon, 96°; at 4 p.m., 95°; at 9, 80°;—with wet bulb, 75°.
9TH FEBRUARY.—The leisure we enjoyed at this camp, enabled us to bestow more attention on the vegetable and animal productions of these remarkable plains, than had been given during my former journey. It appeared that the saltwort plants, which were numerous, were not only efficacious in keeping the cattle that fed on them in the best possible condition; but as wholly preventing cattle and sheep from licking clay, a vicious habit to which they are so prone, that grassy runs in the higher country nearer Sydney are sometimes abandoned only on account of the "licking holes" they contain. It is chiefly to take off that taste for licking the saline clay, that rock-salt is in such request for sheep, lumps of it being laid in their pens for this purpose. At all events, it is certain that by this licking of clay both sheep and cattle are much injured in health and condition, losing their appetite for grass, and finally passing clay only, as may be seen near such places. In the salt plants on these plains, nature has amply provided for this taste of these large herbivora for salt. Our sheep nibbled at the mesembryanthemum, and the cattle ate greedily of various bushes whereof the leaf was sensibly salt to the taste. The colour of the leaves of such bushes is usually a very light bluish green, and there are many species. That with the largest leaves, called salt-bush by stockmen, and by Dr. Brown Rhagodia parabolica, was very useful as a vegetable after extracting the salt sufficiently from it. This we accidentally discovered from some experiments made by Mr. Stephenson, for the purpose of ascertaining the proportion of salt contained in the leaves. The leaves contained as much as a twentieth part of salt, nearly two ounces having been obtained from two pounds of the leaves.[*] We also found that after twice boiling the leaves a few minutes in water to extract the salt, and then an hour in a third water, the leaves formed a tender and palatable vegetable, somewhat resembling spinach. As the superior excellence of these runs for fattening cattle is admitted on all hands, as compared with others more abundant in grass on the eastern side of the great range, would it not be advisable for the colonists to cultivate this salt-supplying bush, and thereby to produce a vegetable substitute for the rock salt, which is not only expensive, but only a very imperfect remedy for the clay-licking propensities of sheep and cattle on many runs? Thermometer at sunrise, 70°; at noon, 94°; at 4 p.m., 98°; at 9, 86°;—with wet bulb, 75°.
[* The process of Mr. Stephenson was as follows:—"Two pounds of the green leaf were boiled in eight quarts of water for half an hour, then strained and evaporated nearly to dryness. The mass was then submitted to a red heat for half an hour. The residuum was next digested in one pint of water, filtered, and again evaporated to six ounces. It was then exposed to the sun's rays, which completed the desiccation; crystals of a cubic shape having previously been formed.">[
10TH FEBRUARY.—This morning the natives caught, in a hollow tree, an animal apparently of the same genus as the Dipus Mitchellii, and which seemed to live solely on vegetables. The barometer had fallen three millimetres last evening, and by noon this day it had declined three more. A fresh breeze blew from N. N. E., and at 2 p.m. a dark thunder cloud came from the S. S. W. and passed over the camp. The thunder was very loud, the lightning close and vivid; the wind for some time high, and rain heavy. The sky was, however, clear by 4 p.m., except in the N. E. where the thunder continued. Thermometer at sunrise, 75°.
11TH FEBRUARY.—The real "Duck Creek" was still to the northeastward of our camp, as Mr. Kennedy had ascertained when on the Macquarie. I hoped to find in it water sufficient at least to serve the party halting on it one night, on its way to the Macquarie, by which line alone I was now convinced water enough might be obtained to supply the party until it could arrive at the Darling; I therefore rode this day to examine it, with the elder native. I followed the bearing of N. N. E. from our camp, a direction in which it was likely to be met with, so as equally to divide the journey of the drays to the Macquarie, into two days. I crossed plains covered with luxuriant crops of very rich grass, and at length obtained a sight of Mount Foster bearing east. I reached Duck Creek (that of Sturt), or the "Marra" of the natives, ascertained by the bearing of Mount Foster, the native name of which is Narrab. I examined the bed of the Marra downwards for about two miles, without seeing therein the least indication of water, and returned to the camp fully resolved to proceed next day to the Macquarie, so as to reach it a little way below Mount Foster, a distance in that direction rather too great for the cattle to travel over in one day. Thermometer at sunrise, 59°; at noon, 73°; at 4 p.m., 76°; at 9, 61°;—with wet bulb, 57°. From an average of twenty-five observations of the mercurial column, the height of this station has been determined to be 566 English feet above the level of the sea.
12TH FEBRUARY.—We broke up our encampment on Cannonbà ponds, where we had greatly recruited ourselves, both men and cattle, and crossing the channel of the water-course near our camping ground, we travelled over open grassy plains towards the river Macquarie. At thirteen miles we reached the western branch of Duck Creek, or "Marra," a name by which it is universally known to natives and stockmen. Of this we crossed several branches, from which it would appear as if the name was derived from that of the hand, which is the same, especially as natives sometimes hold up the hand and extend the fingers, when they would express that a river has various branches or sources. I went on with an advanced party towards the Macquarie, and encamped on the bank of that river at 5 p.m. The thick grass, low forests of yarra trees, and finally the majestic blue gum trees along the river margin, reminded me of the northern rivers seen during my journey of 1831. Still even the bed of this was dry, and I found only two water holes on examining the channel for two miles. One of these was, however, deep, and we encamped near it, surrounded by excellent grass in great abundance. The Macquarie, like other Australian rivers, has a peculiar character, and this was soon apparent in the reeds and lofty yarra trees growing on reedy plats, and not, as usual in other rivers, on the edge of water-worn banks. The channel was here deep and dry. We found this day, in the scrubs by Marra Creek, the Acacia salicina, whereof the wood has a strong perfume resembling violets, also a new small-leaved Kochia with intricate branches.[*] Thermometer at sunrise, 47°; at 4 p.m., 77°; at 9, 57°;—with wet bulb, 56°.
[* K. thymifolia (Lindl. MS.); fruticosa, ramosissima, ramulis intricatis pubescentibus, foliis carnosis obtusis teretibus fructibusque glabris.]