The plane dived through the dense wall of fog, which for a moment shut out the violet fire completely. Then Jim was through, and almost immediately beneath him lay the black and glassy surface of the pool. Out of the very heart of it rose the fire, burning like some infernal flame that consumed nothing, and between it and the fog was a space of almost translucent air, extending to the borders of the pool. Jim began to circle the pool to find a landing-place. But as he looked down, the surface of the pool began to change its aspect. * * * * * In place of the unruffled calm, it began to work with some devil's yeast all around the central pillar of flame, until its depths seemed to be churned up in frothy masses and the movement extended almost to the circumference. Then the whole surface of the water began to tilt and sway with a slow, shimmering, undulatory movement, as if it was a giant roulette wheel in rotation. And something was materializing out of the heart of the violet flame itself. It was a face--a human face, with bestial features, distorted and enormously magnified through the substance in which it was. Such a face as might look back upon an observer out of one of those distorting mirrors at Coney Island, or some other place of popular amusement, but twisted and enlarged beyond conception, so that it covered half the area of a city block. Curiously blurred, too, as if each atom of that face was in isolated motion on its own account. And beneath the face appeared the vague outlines of a hand, apparently manipulating some sort of infernal mechanism. And that face, enlarged as it was out of all proportion, filled Jim's heart with greater horror than any face he had ever known. For it was the visage of Lucius Tode, and on those huge and distorted features was something that looked like a diabolical smile. * * * * * Everything vanished. Jim was back in the surrounding wall of fog. Instinctively he banked again. He strove to drive the horror from his brain. He must circle, circle incessantly, in the hope of finding Lucille. She must have already arrived. But if she had not fallen into Tode's power, she would hear the roaring of the plane and manage to signal him. He circled back into the clear space between the white and the violet, and now he saw that the effect upon the pool was still more pronounced. The waters were rising up in a rim all around, and yet not overflowing. They were standing up like a bowl of clay upon the potter's wheel, and down in the depths Jim could see the head and shoulders of Tode, much less magnified, more natural in appearance, and less blurred. And Tode was looking up at him and pointing that infernal mechanism at him--something that looked like the tube of a telescope.