This expedition, which consisted of only three men and thirteen horses, set out on the 2nd of March, 1860, from Chambers's Creek, a valuable water supply which had been discovered by Stuart in 1858. For some time his course lay through an extensive tract of country which, though yet unoccupied, had become well known to this, its first explorer. Toward the northern part they followed the River Neale, which furnished plenty of water, and led them into the unknown country. The next important creeks to be discovered and crossed were the Hamilton, the Stephenson, and the Finke. After crossing the latter there began to heave into sight a strange and striking mountain structure, which presented the appearance of a locomotive engine with its funnel. "We proceeded," says the journal, "towards this remarkable pillar through heavy sand-hills covered with spinifex, and, at 12 miles from last night's camp, arrived at it. It is a pillar of sandstone, standing on a hill upwards of 100 feet high. From the base of the pillar to its top is about 150 feet, quite perpendicular, and it is 20 feet wide by 10 feet deep, with two small peaks on the top. I have named it Chambers's Pillar, in honour of James Chambers, Esq., who has been my great supporter in all my explorations." Much good country had been traversed before this point was reached; indeed, the whole of this route was a surprise in this respect, as it had been expected to land them in a great central desert. Instead of finding a barren wilderness, the continuation of the journey brought them into another splendid tract, watered by a creek named the Hugh, which, after being followed for a long distance, terminated in a high mountain-chain. To scale its rugged flanks and penetrate the dense thickets of mulga proved to be a most formidable task, their clothes and skin being torn in forcing a passage through the living and the dead timber. This range--the James--was succeeded by two other chains, which were named the Waterhouse and the M'Donnell Ranges, the latter of which have since become a well-known landmark in the history of more recent explorations. Stuart thus describes the view he obtained from the north gorge of these mountains:--"From the foot of this for about five miles is an open grassy country, with a few small patches of bushes. A number of gum-tree creeks come from the ranges and seem to empty themselves in the plains. The country in the ranges is as fine a pastoral hill-country as a man could wish to possess--grass to the top of the hills, and abundance of water through the whole of the ranges." Still heading northward, the expedition reached a position, on the 22nd of April, which is very memorable in the annals of Australia. The goal which had proved the incitement to so many sacrifices during a long period of our history was now reached at last. Mr. Stuart was standing in the centre of the continent. This achievement, of which he might well have been