Yakul shouted, but I heeded him not. I was gazing fixedly at the Rock of the Great Sin, striving to devise some means by which to reach and examine the disturbed portion of its base. It occurred to me that, by diving into the water, I could perhaps swim across and return without becoming asphyxiated, therefore I walked back to where my two companions were squatting, and amazed them by announcing my intention to cross the Lake of the Accursed.

“But are not its waters fatal? Thou wilt, of a verity, be poisoned!” cried Tiamo, springing to his feet and clutching my arm in alarm.

“Unto the Lalla Azala I gave my pledge that I would strive to elucidate this mystery,” I answered, calmly. “I shall plunge in yonder, and strike towards the rock. If I fail, return quickly unto her and tell her in what manner I died. Tell her that for many moons have I journeyed until at last I discovered the Rock of the Great Sin, and that, in seeking what was hidden, I was brought unto Certainty. But, by the grace of the One Merciful, who hath guided me by the sun of his favour, I hope to find strength sufficient to make my investigation, and return hither in safety. In case I should not,” I added, removing one of my amulets from the little string of talismans, sewn carefully in soft leather, that I had worn always next my skin ever since I could remember, and handing it to him, “in case I should fail, take this to the Lalla Azala, and tell her that my last thoughts were of her.”

“Truly I will, O master,” answered the dwarf, grasping the small golden circle, and feeling it with nervous, trembling fingers.

“Is it not folly, O friend, to trust thyself in yon sacred lake? There is death in its breath,” Yakul urged, regarding me with a strange look of pitying suspicion, as if fearing that I had taken leave of my senses. To him the very suggestion seemed preposterous. He had feared to approach the waters, and my resolution to desecrate them by plunging in filled him with awe.

“It cannot be avoided,” I answered. “I seek that which I desire to find, and am determined to make the attempt if Allah—whose name be exalted!—willeth it.”

“And if thou failest?” he asked.

“Allah alone knoweth the hearts of men. He leadeth me, and I am not afraid,” I answered.

“Alas! I fear thou wilt find naught,” the savage chieftain exclaimed. “Yon mystery is hidden from man, and vengeance falleth upon him who seeketh to tear aside the veil.”

“I know,” I said. “A hundred times hath the same words been spoken unto me. Each man to whom I mentioned the object of my journey prophesied failure, yet their prognostications have, up to the present, proved untrue. I stand here, before the rock which followers of the Prophet have sought for ages, but could not find, and I tell thee I am resolved to investigate further.”