The tract of country between the overland telegraph line and the western settlements now became the battlefield of the explorers; few of them, it is true, hoped to find much available country, the accounts of those who had penetrated a short distance being so depressing; but they struggled for the honour of being the first to cross the gap of unknown land, often to the neglect of careful inspection. One of the expeditions that led to the western half of the continent being condemned as a hopeless desert was that commanded by Colonel Warburton, It was promoted by two South Australian colonists whose names have been always to the front when exploration has been concerned--Messrs. Thomas Elder and Walter Hughes. They jointly fitted out the expedition, which, it was hoped, would lead to the advancement of geographical knowledge; unfortunately, the result was not at all commensurate. The original idea was that the party should start from about the neighbourhood of Central Mount Stuart, and make for Perth, this course, however, was not adhered to. In spite of being fitted out solely with camels, Warburton suffered so much delay in getting through the sandhills that his provisions were all consumed and his camels knocked up before he got half-way through, compelling him to bear up north to the head waters of the Oakover River, discovered by F. Gregory. The party consisted of the leader and his son Richard, Mr. Lewis (surveyor), one white man, two Afghans, and a black boy. They had seventeen camels, and six months' rations. On the 15th of April, 1873, the explorers left Alice Springs, one of the stations on the overland telegraph line, and on the 17th reached the Burt, where they left the line and struck out west. Warburton's course at first lay some seventy miles south of Central Mount Stuart; but after a vain search for the rivers Hugh and Fincke, which were supposed to flow through the M'Donnell Ranges, he altered his direction, steering to the north-west, meaning to connect with A. C. Gregory's most southerly point on Sturt's Creek. Their way for some distance was through good pastoral country, and in some of the minor ranges beautiful glens were discovered, with deep permanent pools of water in their beds. So frightened were the camels at the appearance of the rocks that surrounded these water-holes, that they would not approach them to drink, and, in fact, even refused the water when it was brought to them. On the 22nd of May, after being some days in poor sandy country, they came to a good creek, the head of which was running, and the whole flat where the creek emerged from the hills was one spring. This spot, the best camp they had yet seen, was named Eva Springs. Leaving the main party resting at these springs, Warburton, with two companions, started on ahead, and were successful in finding some native wells, that enabled him to break up his camp and move on with the whole of the men and material.