A long and painful search was immediately instituted for the missing man, but unfortunately, through some accident, his tracks were overlooked on the third day, and it was not until the 23rd of the month that the footsteps were found. Mr. Larmer and three men were sent with an ample supply of provisions to follow the tracks until they found Cunningham, alive or dead. Three days later they returned, having found the horse he had ridden, dead, with the saddle and bridle still on. Mitchell returned to the search once more; the lost man's trail was again picked up, and he was tracked to the Bogan River. They there met with some blacks who had seen the white man's track in the bed of the river, and made the searchers understand that he had gone to the west with the "Myall" [Wild blacks who had not visited the settlements.] blackfellows.
All hope of finding him alive was now almost abandoned, but the pursuit was continued until May 5th, when the men brought back tidings that they had followed his tracks to where it disappeared near some recent fires where many natives had been encamped. Close to one of these fires they found a portion of the skirt or selvage of Cunningham's coat, numerous small fragments of his map of the colony, and, in the hollow of a tree, some yellow printed paper in which he used to carry the map. His fate was afterwards ascertained from the blacks. [ See Appendix.]
As is unfortunately so usual in these cases, Cunningham had, by wandering in eccentric and contradictory courses, accelerated his fate, by rendering the work of the tracking party so much more tedious and difficult. Had he, on finding how absolutely he was astray, remained at the first water he reached, he would have been found.
Having done all that man could do to find his lost friend, and even jeopardised the final success of his own expedition by the long delay of fourteen days, Mitchell resumed his journey by easy stages down the Bogan, and on the 25th of May reached the Darling, which was at once recognised by all the former members of the party as the "Karaula," from the peculiar attributes that characterised it. On tasting the water, they were agreeably surprised to find it fresh and sweet. The state of the country now was very different from what it was when Sturt was forced to retreat. With that explorer's graphic account of the barren solitude that he met with, fresh in the reader's memory, let him contrast it with what Mitchell writes, remembering that one was encamped beside a salt stream, and the latter writer beside a fresh water river.
"We were extremely fortunate, however, in the place to which the bounteous hand of Providence had led us. Abundance of pasture, indeed such excellent grass as we had not seen in the whole journey, covered the fine forest ground on the bank of the river. There were four kinds, but the cattle appeared to relish most a strong species of AUTHISTIRIA, or kangaroo grass."
Finding the place eligible in every respect for the formation of a depôt, a stockade of logs was erected and the encampment christened Fort Bourke.
The boats were launched, but the navigation of the river was found to be impeded by shallow rapids, so the party returned to Fort Bourke, and Mitchell with four men made an excursion down the river to the point where Sturt and Hume turned back. D'Urbans group was also 'Visited, and bearings taken to whatever elevations were in sight. On returning to the depôt the camp was broken up and the whole party started down the Darling (the CALLA-WATTA of the natives) on the 8th June. During their progress they found the tree marked H. H. by Hume, at Sturt's limit, and they now noticed that in places the river water was salt or brackish. On the 11th of July, after following the course of the river for three hundred miles, and ascertaining beyond all doubt that it must be identical with the junction in the Murray, noticed by Captain Sturt, Mitchell determined to return; the unvarying sameness of the country they had travelled over holding forth no hope of any important discovery being made, in the space intervening between their lowest camp and Sturt's junction. The natives, too, had been an incessant cause of annoyance to them; robbing the camp at every opportunity, and keeping the leader in constant anxiety for the safety of any of the members of his party, whom duty compelled to leave the main body. On the very day, almost at the very hour, when Mitchell made up his mind to return, the first hostile collision between the two races occurred; a collision which had only been hitherto averted by the admirable patience of the Major and his men. On the 29th June, he wrote:—
"I never saw such unfavourable specimens of the aborigines as these children of the smoke, [Referring to their constant habit of burning the grass.] they were so barbarously and implacably hostile, and shamelessly dishonest, and so little influenced by reason that the more they saw of our superior weapons and means of defence, the more they showed their hatred and tokens of defiance."
On the morning of this day, when he had settled in his own mind the futility of further progress, two of the men were away at the river, and five of the the bullock drivers were also at another bend, collecting their cattle. One of the blacks whom they had nick-named King Peter tried to snatch the kettle of water from the hand of the man who was carrying it; and on being resisted he struck him senseless with his nulla-nulla. The companion of the wounded man shot King Peter in the groin, and his majesty tumbled into the river and swam across. The tribe now advanced against them, and two shots were fired in self defence, one of which accidentally wounded a gin. Three men from the camp hearing the firing came up, and one more native was shot, who was preparing to spear one of the men. The natives retreating, the men went in search of the bullock-drivers, whom they found endeavouring to raise a bogged bullock: their timely arrival probably saved these men's lives, as they were unarmed and unprepared.
War being thus declared, a careful watch was kept up, but no attack was made, and the explorers departed unmolested.