The first thirty miles of the journey was over familiar country, and they camped that night at a small water-hole lately filled by a thunderstorm. Beyond them now stretched a waste of sand ridges and mulga scrub, into which Morton had once penetrated for some twenty miles. With full water-bags, and a determination not to be beaten back without a struggle, our adventurers commenced the second day's journey with light hearts.

During the whole of the day the sombre scrub and heavy sand continued, without break or change in their depressing monotony. Scarcely the note of a bird or insect broke the silence, as they toiled on without much heart for conversation. Towards evening a piece of good fortune befell them. On a small flat between two sand ridges they crossed a patch of short green grass, the result of a recent thunder-storm. No water could be found, the hot summer sun having evaporated all that had been caught in the shallow clay pans. The green grass was, however, a boon to the horses, who did not feel the want of water so much on the soft young feed.

Next morning they were saddled and packed up, ready to start by sunrise. About ten o'clock they ascended a sand ridge somewhat higher than those they had formerly crossed, and from its crest they were able to look around on the sea of scrub that surrounded them. Not far off, in the direction in which they were going, Morton drew the attention of his companions to a thin column of smoke.

"Burning mountain already?" queried Brown.

"Niggers travelling and hunting," replied Morton. "The scrub looks thinner there. They won't be far from camp at this time in the morning; but I expect the water is only a soak-hole, of no use to us."

In less than an hour they were riding over patches of still-burning grass, thinly scattered through a forest of bloodwood-trees; but neither the sharp eyes of Morton or Billy could detect a sign of the hunters. After searching for some time the boy found the tracks of a blackfellow, two gins,[[1]] and some pickaninnies[[2]] coming from the westward, and these they followed back for about a mile to a freshly-abandoned camp. It was situated on a fairly open piece of country, partly covered with coarse drift sand. Not far from the camp was a ragged old shell of a gum-tree, covered with tomahawk marks. Billy, who had at once gone to this tree, gave a low whistle, and the others came up. He pointed to a small hole near the butt, and dismounting put his arm down and then peered into it.

[[1]] Women.

[[2]] Children.

"Water long way down," he said. "Gone bung, mine think it." By which they understood that the supply had dried up. After some searching about, a long sapling was procured and thrust down. The hole was about ten feet deep, and the end of the sapling brought up some wet mud.

"How did the blacks get down for the water, Billy?" asked Brown.