"Quick," he said, seizing the two water-skins and flinging them across his saddle, "mount and away."

I required no second bidding, and I followed my fellow-robber, as he forged ahead into the sandy desert skirting the lake. Hour after hour, through the night did we keep going, and when, soon after dawn, the sheik pulled up among some low sand-hills, and dismounted, we had put many miles between ourselves and the former owners of our horses. Faris was in better spirits than I had ever known him to be; he appeared to have forgotten all our strange adventures, and to be living only in the present—a free man in a free land; but even he, inured to endless hardships, I soon discovered, was suffering from exhaustion. I inwardly rejoiced when I observed it, for I myself was completely done up. All our garments were wet through, and most of them in a filthy condition of slimy mud; so we agreed unanimously that it would be quite safe to rest for a time; and, taking off our clothes, we spread them out in the sun to dry.

We hobbled the horses, partook of a few hard dates and a mouthful of water, and, stark naked, lay down on the slope of a hummocky sand-billow to rest our wearied limbs. How delightful was the warmth of the sun to my damp body! But how miserably tired and sleepy I felt!

"A little sleep, sheik," I said, "would be a good thing."

He made no reply, and looking at him, I found that he had forestalled my suggestion, and was already breathing heavily. I roused myself to a sense of duty; both of us must not sleep at the same time; I would watch while he slept; and then my turn would come. I began to wonder how long it would be before he woke up. I wondered why people wanted to sleep, and I remember that I found it most difficult to find a solution for the problem—so many things kept crowding into the argument. I was annoyed with myself for not being able to work it out successfully; and then, somehow or another, all my good intentions must have faded away, and unwittingly I must have dropped off to sleep.


CHAPTER XI.

ONLY HALF A CAPTURE.

I awoke suddenly with a start. People were talking. I rubbed my eyes and looked. Was I dreaming, I wondered; for, within a couple of yards of me, I saw Sedjur and George Edwards in Arab dress, sitting on their horses and talking to the sheik. I jumped up to greet them, but I grew dizzy and sank back again. Edwards dismounted and ran across to me.

"What is the matter, old man?" he asked, taking my hand.