As the junction of the Namoi could not be far distant, Mitchell had thus laid down the course and direction of these two large rivers, although he had as yet seen nothing of the object of his search, the Kindur.
He now prepared to move once more to the north, anxious to find a river that did not belong to the Darling system. As, however, he was on the point of starting, he was overtaken by his assistant-surveyor, Finch, who was bringing on additional supplies, with the disastrous news that the blacks had attacked his camp during a temporary absence, murdered the two men, robbed the supplies, and dispersed the cattle. This misfortune put a stop to the progress of the party. They returned, and having buried the bodies of the victims, but failed to find the murderers, made their way back to the settled districts.
This journey of Major Mitchell's helped greatly to work out the courses of the rivers crossed by Oxley, and more especially those discovered by Cunningham during his trip to the Darling Downs. Mitchell travelled, as it were, a more inland but parallel track, crossing the rivers much lower down. Thus the Field River of Oxley is the NAMOI of Mitchell, Cunningham's Gwydir is recognised by the Surveyor-General, and is probably the mythical KINDUR or KEINDER, whilst the last found river, Mitchell's KARAULA, is formed by the junction of Cunningham's Dumaresque and Condamine.
When we add to this the discovery of the Drummond Range, Mitchell's first contribution to Australian geography was sufficiently important.
This year, 1832, was marked by the murder of Captain Barker, already mentioned as in turn Commandant of Fort Wellington and King George's Sound. He was returning from the latter place, after handing over charge to Captain Stirling, and on his way home landed on the eastern shore of St. Vincent's Gulf, to see if the waters of Lake Alexandrina, the termination of the Murray, had an outlet in the Gulf. Being unsuccessful he crossed the range and paid a visit to the lake. Anxious to obtain some bearings, he swam across the channel connecting the lake with the sea in order to ascend the sandhills on the opposite side. His companions watched him take several bearings from the top of the hill, descend out of view on the other side, and he was never seen again. One of the sealers from Kangaroo Island interrogated the blacks by means of a native woman of the island, who could speak broken English, and her account was that Barker met three natives as he descended the sand dune, who attacked and speared him, unarmed and naked as he was, and then cast his body in the breakers. These natives were of the same tribes that showed such determined hostility to Sturt when he first found the lake.
Although Sturt himself felt confident that the junction of the Murray and Darling were satisfactorily proved by what he saw on his famous boat excursion, he had not convinced all of the public. Major Mitchell, for one, had an entirely different theory on the subject embracing the existence of a. dividing range between the Macquarie and Lachlan rivers which would entirely preclude the Darling and Murray from joining. Time, however, proved that Sturt's instinct had not been at fault when on reaching the junction of the two rivers in his whale-boat, he felt convinced that he there saw the outflow of his old friend, the Darling.
It must be remembered that the explorations conducted by Major Mitchell were also surveys, superintended by him as Surveyor-General, which will partly explain the presence of the large body of men and equipage which it was his custom to take with him. The roll call of the members of one of his expeditions reads like that of an invading army. [See Appendix.]
In order to get some additional information concerning the elevated country that Oxley had noticed to the westward between the Lachlan and the Macquarie (on which slight foundation Major Mitchell had built his theory of the two rivers running through distinctly different basins), Mr. Dixon was sent out in 1833. This gentleman, however, for some reason did not adhere to his instructions; he followed down the Macquarie for some distance and crossed to the Bogan (Sturt's New Year's Creek), then running strong, and having followed that river for sixty-seven miles, returned to Bathurst; nothing new nor important came of this expedition.
In March, 1833, the party formed under the superintendence of the Surveyor-General left Parramatta to travel by easy stages to Buree, where they were to be overtaken by their leader. The list of the members is a long one. We who live in the days of well-equipped small parties, composed of reliable, experienced men only, would feel considerably handicapped with such a retinue. In addition to Major Mitchell, Richard Cunningham, botanist (brother to Allan Cunningham), and Mr. Larmer, assistant surveyor, there were twenty-one men; carpenters, bullock drivers, blacksmith, shoemaker, &c.
While still on the outskirts of settlement, an unhappy fate overtook Cunningham, the botanist. Leaving the party, doubtless on some scientific quest, during the morning of the 17th of April, whilst they were pushing over a dry stage to the Bogan River, he lost his way, and was never seen again.