Expedition into Central Australia

It may here be necessary, before I enter on any detail of the proceedings of the expedition, to explain the general nature of my instructions, the object of the expedition, and the reasons why, in some measure, contrary to the opinion of the Secretary of State, I preferred trying the interior by the line of the Darling, rather than by a direct northerly route from Mount Arden.

As the reader will have understood, I wrote, in the year 1843, to Lord Stanley, the then colonial minister, volunteering my services to conduct an expedition into Central Australia. It appeared to his Lordship as well as to Sir John Barrow, to whom Lord Stanley referred my report, that the plan I had proposed was too extensive, and it was therefore determined to adopt a more modified one, and to limit the resources of the expedition and the objects it was to keep in view, to a certain time, and to the investigation of certain facts. After expressing his opinion as to the magnitude of the undertaking I had contemplated, "There is, however," says Sir J. Barrow, in a minute to the Secretary of State, "a portion of the continent of Australia, to which he (Captain Sturt) adverts, that may be accomplished, and in a reasonable time and at a moderate expense.

"He says, if a line be drawn from lat. 29 degrees 30 minutes and long. 146 degrees, N.W., and another from Mount Arden due north, they will meet a little to the northward of the tropic, and there, I will be bound to say, a fine country will be discovered. On what data he pledges himself to the discovery of this fine country is not stated. It may, however, be advisable to allow Mr. Sturt to realize the state of this fine country.

"This, however, is not to be done by pursuing the line of the Darling to the latitude of Moreton Bay, which would lead him not far from the eastern coast, where there is nothing of interest to be discovered, nor does it appear advisable to pursue the Darling to the point to which he and Major Mitchell have already been, for this reason. His preparations will, no doubt, be made at Adelaide; from thence to the point in question is about 600 miles, and from this point to the fine country, a little beyond the tropic, is 700 miles, which together make a journey of 1300 miles. Now a line directly north from Adelaide, through Mount Arden, to the point where it crosses the former in the fine country, is only 800 miles, making a saving, therefore, of 500 miles, which is of no little importance in such a country as Australia.

"But Mr. Sturt assigns reasons for supposing that a range of mountains will be found about the 29th parallel of latitude, and Mr. Eyre, whilst exploring the Lake he discovered to the northward of the Gulf of St. Vincent, Adelaide, notices mountains to the N.E., in about the latitude of 28 degrees. Supposing, then, a range of mountains to exist about that parallel, their direction will probably be found to run from N.E. to S.W., which is that generally of the river Darling and its branches; and in this case it may reasonably be concluded that these mountains form the division of the waters, and that all the branches of the several rivers (some of them of considerable magnitude) which have been known to fall into the bays and gulfs on the W. and N.W. coasts, between the parallels of 14 degrees and 21 degrees, have their sources on the northern side of this range of mountains; but, even if no such range exists, it is pretty evident, from what we know of the southern rivers, adjuncts chiefly of the Darling, that somewhere about the latitudes of 28 degrees or 29 degrees the surface rises to a sufficient height to cause a division of the waters, those on the northern side taking a northerly direction, and those on the southern side a southerly one.

"To ascertain this point is worthy of a practical experiment in a geographical point of view, as the knowledge of the direction that mountains and rivers take, the bones and blood vessels of bodies terrestrial give us at least a picture of the body of that skeleton. To these Mr. Sturt will no doubt direct his particular attention, as constituting the main object of such an expedition, and these, with the great features of the country, its principal productions in the animal and vegetable part of the creation, the state and condition of the original inhabitants, will render a great service to the geography of the southern part of Australia."

On this memorandum the Secretary of State observes, in a private letter to Captain Grey, that came to hand before the receipt of Lord Stanley's public despatch:--

"In considering Sir John Barrow's memorandum, enclosed in my public despatch, you will see that a strong opinion is expressed against ascending the Darling in the first instance, and in favour of making a direct northerly course from Adelaide to Mount Arden. I do not wish this to be taken as an absolute injunction, because I am aware that there may be local causes why the apparently circuitous route may after all be the easiest for the transport of provisions, and may really facilitate the objects of the expedition. In like manner I do not wish to be understood as absolutely prohibiting a return by Moreton Bay, extensive as that deviation would be, if it should turn out that the exploration of the mountain chain led the party so far to the eastward as to be able to reach that point by a route previously known to Captain Sturt or to Major Mitchell, more easily than they could return on their steps down the Darling. What Captain Sturt will understand as absolutely prohibited, is any attempt to conduct his party through the tropical regions to the northward, so as to reach the mouths of any of the great rivers. The present expedition will be limited in its object, to ascertaining the existence and the character of a supposed chain of hills, or a succession of separate hills, trending down from N.E. to S.W., and forming a great natural division of the continent; to examining what rivers take their source in those mountains, and what appears to be their course; to the general lie of the country to the N.W. of the supposed chain; and to the character of the soil and forests, as far as can be ascertained by such an investigation as shall not draw the party away from their resources, and shall make the south the constant base of their operations."

I presume, from the tenor of Sir John Barrow's memorandum, that he was not fully aware of the insurmountable difficulties the course he recommends presented. Valuing his judgment as I did on such an occasion, and anxious as I was to act on the suggestions of the Secretary of State, the strongest grounds could alone have made me pursue a course different to that which had been recommended to me. Certainly the fear of any ordinary difficulty would not have influenced me to reject the line pointed out, but I felt satisfied that if Lord Stanley and Sir John Barrow could be made aware of the nature of the country to the north of Mount Arden, and the reasons why I considered it would be more advantageous to take the line of the Darling, they would have concurred in opinion with me. I would myself much rather have taken the line by Mount Arden, since it would have been a greater novelty, and I would have precluded the chance of any collision with the natives of the Darling, more especially at that point to which I proposed to go, and at which Sir Thomas Mitchell had had a rupture with them in 1836. The journeys of Mr. Eyre had, however, proved the impracticability of a direct northerly course from Mount Arden. Such a course would have led me into the horseshoe of Lake Torrens; and although I might have passed to the westward of it, I could hope for no advantage in a country such as that which lies to the north of the Gawler Range. On the other hand, the Surveyor-General of South Australia had attempted a descent into the interior from the eastward, and had encountered great difficulties from the want of water. Local inquiry and experience both went to prove the little likelihood of that indispensable element being found to the north of Spencer's Gulf. It appeared to me also that Sir John Barrow had mistaken the point on the Darling to which I proposed going. It was not, as he seems to have conjectured, to any point to which I had previously been, but to an intermediate one. It is very true that if I had contemplated pushing up the Darling to Fort Bourke, the distance would have been 600 miles, and that, too, in a direction contrary to the one in which I was instructed to proceed; but to Laidley's Ponds, in lat. 32 degrees 26 minutes 0 seconds S. and long. 142 degrees 30 minutes W., (the point to which I proposed to go) the distance would have been a little more than 300 miles. It was from this point that Sir Thomas Mitchell retreated after his rupture with the natives in 1836; because, as he himself informs us, he just then ascertained that a small stream joined the Darling from the westward a little below his camp, and he likewise saw hills in the same direction.