"How do you like these under-the-earth corridors, Mr. Costigan?" he switched suddenly. "You thought of them--what? No doubt that the white savages of your Middle Ages built them? Faugh! These tunnels are older than your world! They were brought into being by mighty kings, too many eons ago for your mind to grasp, when an imperial city towered where now this crude village of London stands. All trace of that metropolis has crumbled to dust and vanished, but these corridors were built by more than human skill--ha ha! Of all the teeming thousands who move daily above them, none knows of their existence save my servants--and not all of them. Zuleika, for instance, does not know of them, for of late I have begun to doubt her loyalty and shall doubtless soon make of her an example." At that I hurled myself blindly against the side of the cage, a red wave of hate and fury tossing me in its grip. I seized the bars and strained until the veins stood out on my forehead and the muscles bulged and crackled in my arms and shoulders. And the bars bent before my onslaught--a little but no more, and finally the power flowed from my limbs and I sank down trembling and weakened. Kathulos watched me imperturbably. "The bars hold," he announced with something almost like relief in his tone. "Frankly, I prefer to be on the opposite side of them. You are a human ape if there was ever one." He laughed suddenly and wildly. "But why do you seek to oppose me?" he shrieked unexpectedly. "Why defy me, who am Kathulos, the Sorcerer, great even in the days of the old empire? Today, invincible! A magician, a scientist, among ignorant savages! Ha ha!" I shuddered, and sudden blinding light broke in on me. Kathulos himself was an addict, and was fired by the stuff of his choice! What hellish concoction was strong enough, terrible enough to thrill the Master and inflame him, I do not know, nor do I wish to know. Of all the uncanny knowledge that was his, I, knowing the man as I did, count this the most weird and grisly. "You, you paltry fool!" he was ranting, his face lit supernaturally. "Know you who I am? Kathulos of Egypt! Bah! They knew me in the old days! I reigned in the dim misty sea lands ages and ages before the sea rose and engulfed the land. I died, not as men die; the magic draft of life everlasting was ours! I drank deep and slept. Long I slept in my lacquered case! My flesh withered and grew hard; my blood dried in my veins. I became as one dead. But still within me burned the spirit of life, sleeping but anticipating the awakening. The great cities crumbled to dust. The sea drank the land. The tall shrines and the lofty spires sank beneath the green waves. All this I knew as I slept, as a man knows in dreams. Kathulos of Egypt? Faugh! _Kathulos of Atlantis!_" I uttered a sudden involuntary cry. This was too grisly for sanity. "Aye, the magician, the Sorcerer.