On the 5th June they crossed the boundary line between Western Australia and South Australia; but their progress was now monotonous and most uninteresting, being through the scrubby, sandy tableland common to the interior. At some native wells, called by them Waterloo Wells, they had an enforced spell of more than a month, and in addition lost three camels, and one of the Afghans nearly died of scurvy. Afterwards they soon got fairly into the salt-lake country, and on the 12th August, at the end of a long and exhausting march, were relieved by one of the small native wells, on which the blacks of this region exist. They were now by their reckoning within ten miles of Sturt's Creek; but although Warburton made two separate attempts to find it, he was unable to see any country that at all resembled the description given by Gregory. He concluded there was some error in the longitude, and proceeded on his westerly course. The record of the day's journey now becomes a simple tale of traversing a barren country, and an incessant search for native wells; added to that, the excessive heat, caused by the radiation of the sandhills during the day induced the leader to spare his camels as much as possible, by travelling at night. This naturally led to a most unsatisfactory inspection being made of the country, and it is impossible to say what clues or indications to better country or more permanent waters were passed by. In fact, he more than once during this part of his journal mentions the fact of wild geese flying over the camp, although they never found any surface water to account for their presence.