For a full half-minute he went downward at a speed that constricted his throat so that he could hardly draw breath. Then, just as he had nerved himself for the imminent crash, the speed of his descent was checked. In another moment he found that he was slowing to a standstill in mid-air.

He was beginning to float backward—upward. But the wall of moving shells, pushing against him, forced him on, downward, and yet apparently against the force of gravitation.

Then of a sudden Tommy was aware of a dim light all about him. His feet touched earth and grass as softly as a thistledown alighting.

He found himself seated in the same dim light upon red grass, and staring into Jimmy's face.


CHAPTER III

Ten Miles Underground

"What I was going to say when we were interrupted, was, 'Can you beat it?'" Jimmy Dodd observed, with admirable sang-froid.

They were still seated on the red grass, gazing about them at what looked like an illimitable plain, and upward into depths of darkness. It was warm, and the light, furnished by what appeared to be luminous vegetation, was about that of twilight.

On every side were clumps of trees and shrubs, which formed centers of phosphorescent illumination, but for the most part the land was open, and here and there human figures appeared, moving with head down and arms hanging earthward.