As the scout swam through the dense atmosphere of his world toward the entrance way to the building, guards stopped him, and examined his credentials. Then he was led through long halls, and down a shaft ten stories below the planet's surface, to where a great table occupied a part of a low ceilinged, wide room. This room was shielded, interference screens of all known kinds lined the hollow walls, no rays could reach through it to the men within. The guard changed, and new men examined the scout's credentials, and he was led still deeper into the bowels of the planet. Once more the guard changed, and he entered a room guarded not by single shields but by triple, and walled with six foot relux, and ceiled with the same strong material. But here, under the enormous gravity, even its great strength required aid in the form of pillars. A giant of his race sat before a low table. The table ran half the length of the room, and beside it sat four other men. But there were places for more than two dozen. "A scout from the colony? What news?" demanded the leader. His voice was a growl, deep and throaty. "Oh mighty Sthanto, I bring news of resistance. We waited too long, in our explorations, and those men of World 3769-8482730-3 have learned too much. We were wrong. They had found the secret of exceeding the speed of light, and can travel through space fully as rapidly as we can, and now, since by some means we cannot fathom, they have learned to combine both our own system and theirs, they have one enormous engine of destruction that travels across their huge universe in less time than it takes us to travel across a planetary system. "Our cause is lost, which is by far the least of our troubles. Thett is in danger. We cannot hope to combat that ship." "Thalt--what means have we. Can we not better them?" demanded Sthanto of his chief scientist. "Great Sthanto, we know that such a substance can be made when pressure can be brought to bear on cosmic rays under the influence of field 24-7649-321, but that field cannot be produced, because no sufficient concentration of energy is available. Energy cannot be released rapidly enough to replace the losses when the field is developing. The fact that they have that material indicates their possession of an unguessed and terrific energy source. I would have said that there was no energy greater than the energy of matter, but we know the properties of this material and that the triple ray which has at last been perfected, can be produced providing your order for all energy sources is given, will release its energy at a speed comparable to the rate of energy relux in a twin ray, but that the release takes place only in the path of the ray." "What more, Scout?" asked Sthanto smoothly.