"I don't know what has happened," Edgar said. "But it seems to me that we are alone here. We must both have been asleep, and these brutes must have separated from the column."

"This is a pretty mess, this is!" the sergeant said. "I cannot hear anything of them, and there was row enough in the rear with the baggage to be heard miles away. What on on earth are we to do, lad?"

"Well, we were marching nearly south. The Southern Cross was almost dead ahead of us. We had better steer by that, and go on ahead until morning."

The camels were at once set in motion, and for hours they plodded on. All desire for sleep had been completely dissipated by the excitement of the situation, and they talked in low tones as to what they were to do if they could make out no signs of the column when day broke. They agreed that their only plan was to keep on until they got to the river, and that when they arrived there they would water the camels and give them a feed, and after a rest start on foot along the bank one way or the other until they found the column.

"There is safe to be a lot of firing," the sergeant said; "for even if the Arabs don't discover the force in the morning before they get to the river, they are certain to turn out to attack them as soon as they get there. Judging by the pace we were going, and the constant halts for the baggage to come up, there is very little chance of the column getting to the river before daylight; and as we have nothing to delay us, I expect we shall be there before they are."

"In one respect that will be all the better," Edgar said; "for as soon as the natives make out the column they will be swarming all over the country to look for stragglers, whereas if we are ahead of them we may get through to the river without being noticed. I don't think that it will be very long before morning breaks, and, do you know, sergeant, I think our camels are going faster than they were."

"I think so too, lad. That looks as if we were getting near the water, and they smell it."

Just as the first signs of daybreak were apparent in the east the character of the country changed, and they could make out clumps of trees, and, as the light grew brighter, cultivated ground. Ten minutes later they both gave a shout of joy as on mounting a slight ascent the river lay before them. A few minutes later they were on its bank. The camels rushing down put their noses into the water; their riders slipped from their backs regardless of the fact that the water was knee-deep, and wading back to the shore threw themselves down by the edge, and took long draughts of the clear water. Then throwing off their clothes they rushed in and indulged in a bathe.

The camels, after filling themselves nearly to bursting, lay down in the stream until the sergeant and Edgar went out and compelled them to return to shore, when they set to work cropping the long grass that grew abundantly there, while their riders sat down and made a meal from the contents of their haversacks.

"Well, at any rate," the sergeant said, "we can do nothing just at present. The troops may be within a mile, and they may be ten miles off; there is no saying. There is nothing for us to do but to wait until we hear something of them. If we do not hear anything of them we shall know that they either have not struck the river, or have struck it so far off that we cannot hear the guns. In that case my opinion is that we may as well rest here for to-day. Before we move I think it will be decidedly better to take the saddles off the camels and hide them in the bushes, and then move away some distance and hide up ourselves. This is evidently a cultivated country, and if there are any natives about they will be sure to see the camels, so we had better not be near them. There is no fear of the animals straying; they will be eating and drinking all day."