destroying god to acquaint himself with the world and its conditions. He would return to teach his tribe. So they remained, a nucleus of evil power that never seemed to die out.
"Nice little design; looks like half a ray-fish," he commented. Impossible to fathom what was going on behind the sheykh's carven, immobile features. "Wasm—did you say? Wait, I must write that down."
The whites of the Arab's eyes glinted as he glanced at Merle. "Are you like your cousin in this—do you also suffer from loss of memory?"
"I—we—what do you mean?"
"You have a saying in your Book of Wisdom, "Thy much learning doth turn thee to madness.' The effendi is like to that man, Paul. For who, after years and years of study, could forget so simple a thing as a wasm?"
Dale didn't move a muscle. His bluff was called. All right! On with the next dance! Too late he realized why the Arab had started the absorbing wasm topic. It had been intended to shock and distract his own thoughts from Gunnar—to prevent his keeping an eye on him.
The Icelander had got up and gone over to his tent a minute ago with a murmur about tobacco. He had not returned. Dale was on his feet and peering into Gunnar's tent in a flash. No one there. He looked at the western horizon—the sun had dipped beyond it. He scanned the desert. It offered no shelter for Gunnar's six feet of height. He looked into every tent; saw that only the servants crouched before their fires, that only baggage lay heaped upon the ground.
Shadows were melting into dusk. But one long shadow seemed to move over there among the dunes not far away! Were his own dark thoughts inventing the thing that fled across the desert?
The darkest thought of all came as he went back to Merle and the silent watchful Arab. Was he a match for this man?
"You needn't worry about Gunnar. The Arab's at the back of these nightly disappearances, I'm quite certain, although the reasons he gave were of his own invention."
"Then you think he'll come back?" Merle looked tired and anxious in the light of her small lamp.
"He'll come back," asserted the man. "Good night, old lady. If you feel nervous or want anything, just give a yelp. I'll be awake—got to finish a bit of research work."
She caught a look that belied his cheerful voice. "Why d'you look round my tent like that? Is there any special danger—that wolf?"
"Well, I don't mind telling you there is a spot of danger. You're not the sort that goes off like a repeating-rifie at being warned. But—have you got your doodah handy?"
She showed the automatic underneath her pillow. "Perhaps I ought to tell you that Gunnar warned me too. No. Not about the wolf, but El Shabur."
"Worse than a whole pack of wolves," he agreed. "Know where you are with those noisy brutes, but the sheykh's another cup of tea, entirely."
"He gave me this. Told me to tie up my tent with it. Queer, don't you think?"
He examined the plait of colored string with profound interest.
"Jerusalem the Golden! If we ever reach dry land again, this will be an heirloom for you to hand on. That is, unless you're hard up and want to sell it to some Croesus for a sack of diamonds. This, my dear Black-eyed Susan, is a relic dating back thousands of years. The seal, of course, not the threads. It's an emerald. And that's the Eye of Horus cut in it."
"Emerald! It must be fearfully valu-
