From the very difficult nature of the country we are advancing into, our further progress must necessarily be very slow for some time, but I still hope that by patience and perseverance we shall ultimately succeed in accomplishing the object of the expedition.
"I have the honour to be, Sir, "Your most obedient humble Servant, "EDWARD JOHN EYRE." "To the Chairman of the Committee of Colonists for promoting the Northern Expedition." * * * "Depot, near Mount Arden, July 22nd, 1840.
"My Dear Sir,--I beg to enclose a copy of the report of our proceedings up to the present date, for the perusal of his Excellency the Governor.
By it his Excellency will perceive that the very inhospitable nature of the country around Lake Torrens, added to my anxiety to remove our horses from the depot near Mount Arden, where there was but very little grass for them, prevented my devoting so much time to the examination of the lake and the country around it, as I should have wished; and I therefore intend, if possible, on my return, to investigate it more fully, being anxious to ascertain, whether, as I suppose, there is a considerable drainage into it from the westward.

The high land seen on its opposite side, appears to be a continuation of the table land, lying to the west of the head of Spencer's Gulf; and though the fall of the country appears to be to the north, I begin to be of opinion now that it is not in reality.

Lake Torrens is evidently the basin into which all the waters from Flinders range fall, and its extent is very considerable; in fact, where I last saw it to the north, it was impossible to say whether it terminated or not, from the very great distance it was off.

The country lying between Flinders range on the one side, and the table land on the other, and north of Spencer's Gulf, is of so low and so level a character that the eye alone is not a sufficient guide as to the direction in which the fall may be.

On my previous visits, I felt convinced it was northerly, but I am now inclined to think that the drainage from Lake Torrens in seasons of wet, is to the south, into the head of the Gulf; and I can only account for there not being a larger connecting watercourse than the small shallow one found when crossing from Streaky Bay--and which I did not then imagine extended far above the head of the Gulf--by supposing that the seasons have so altered of late years that the overflow of the lake has never been sufficient to cause a run of water to the Gulf.