recesses of his mind like shadowy bats flying through a great cavern—"yet where is he when I stand not in front of a mirror? May it be in man's power thus lightly to form and destroy a shadow of life and existence? How do I know that when I step back from the mirror he vanishes into the void of Naught? "Nay, by Valka, am I the man or is he? Which of us is the ghost of the other? Mayhap these mirrors are but windows through which we look into another world. Does he think the same of me? Am I no more than a shadow, a reflection of himself—to him, as he to me? And if I am the ghost, what sort of a world lives upon the other side of this mirror? What armies ride there and what kings rule? This world is all I know. Knowing naught of any other, how can I judge? Surely there are green hills there and booming seas and wide plains where men ride to battle. Tell me, wizard who are wiser than most men, tell me, are there worlds beyond our worlds?" "A man has eyes, let him see," answered the wizard. "Who would see must first believe." The hours drifted by and Kull still sat before the mirrors of Tuzun Thune, gazing into that which depicted himself. Sometimes it seemed that he gazed upon hard shallowness; at other times gigantic depths seemed to loom before him. Like the surface of the sea was the mirror of Tuzun Thune; hard as the sea in the sun's slanting beams, in the darkness of the stars, when no eye can pierce her deeps; vast and mystic as the sea when the sun smites her in such way that the watcher's breath is caught at the glimpse of tremendous abysses. So was the mirror in which Kull gazed. At last the king rose with a sigh and took his departure still wondering. And Kull came again to the House of a Thousand Mirrors; day after day he came and sat for hours before the mirror. The eyes looked out at him, identical with his, yet Kull seemed to sense a difference—a reality that was not of him. Hour upon hour he would stare with strange intensity into the mirror; hour after hour the image gave back his gaze. The business of the palace and of the council went neglected. The people murmured; Kull's stallion stamped restlessly in his stable and Kull's warriors diced and argued aimlessly with one another. Kull heeded not. At times he seemed on the point of discovering some vast, unthinkable secret. He no longer thought of the image in the mirror as a shadow of himself; the thing, to him, was an entity, similar in outer appearance, yet basically as far from Kull himself as the poles are far apart. The image, it seemed to