"Worked again," grinned Arcot. A new set of eyes was inserted automatically, and the screen again lighted. The Thessian ship was spinning end over end toward the ground. It landed with a tremendous crash. Simultaneously from the rear of the _Ancient Mariner_ came a terrific crash, an explosion that drove the terrestrian ship forward, as though a giant hand had pushed it from behind. The _Ancient Mariner_ spun like a top, facing the direction of the explosion, though still traveling in the direction it had been pursuing, but backward now. Behind them the air was a gigantic pool of ionization. Tremendous fragments of what obviously had been a ship were drifting down, turning end over end. And those fragments of the wall showed them to be fully four feet of solid relux. "Enemy got up behind somehow while the eyes were out, and was ready to raise merry hell. Somebody blew them up beautifully. Look at the ground down there--it's red hot. That's from the radiated heat of our recent encounter. Heat rays reflected, light bombs turned off, heat escaping from ions--nice little workout--and it didn't seriously bother our defenses of two-inch relux. Now tell me: what will blow up four-foot relux?" asked Arcot, looking at the fragments. "It seems to me those fellows don't need any help from us; they may decline it with thanks." "But they may be willing to help us," replied Afthen, "and we certainly need such help." "I didn't expect to come out alive from that battleship there. It was luck. If they knew what we had, they could insulate against it in an hour," added Arcot. "Let's finish those fellows over there--look!" From the wreck of the ship they had downed, a stream of men in glistening relux suits were filing. Any men comparable to humans would have been killed by the fall, but not Thessians. They carried peculiar machines, and as they drove out of the ship in dive that looked as though they had been shot from a cannon, they turned and landed on the ground and proceeded to jump back, leaping at a speed that was bewildering, seemingly impossible in any living creature. They busied themselves quickly. It took less than thirty seconds, and they had a large relux disc laid under the entire group and machines. Arcot turned a molecular ray down. The rock and soil shot up all about them, even the ship shot up, to fall back into the great pit its ray had formed. But the ionization told of the ray shield over the little group of men. A heat ray reached down, while the men still frantically worked at their stubby projectors. The relux disc now showed its purpose. In an instant the soil about them was white hot, bubbling lava. It was liquid, boiling furiously. But the deep relux disc simply floated on it. The enemy ship began sinking, and in a moment had fallen almost completely beneath the white hot rock.