It was one of the commercial space freighters plying between Nansal, Sator, Earth and Venus that had brought the news of this war to him, Torlos explained, and he, as the new Trade Coordinator and Fourth of the Four who now ruled Nansal, had suggested that they go to the aid of the man who had so aided them in their great war with Sator. It was Arcot's gift of the secret of the molecular ray and the molecular ship that had enabled them to overcome their enemy of centuries, and force upon them an unwelcome peace. Now, with a fleet of fifty interstellar, or better, intergalactic battleships, Nansal was coming to Earth's aid. The battleships were now on patrol with all of Earth's and Venus' fleet. But the Nansalian ships were all equipped with the enormously rapid space distortion system of travel, of course, and were a shock troop in the patrol. The Terrestrian and Venerian patrols were not so equipped in full. "And Arcot, from what I have learned from your father, it seems that I can be of real assistance," finished Torlos. "But now, I think, I should know what the enemy has done. I see they built some forts." "Yes," replied Arcot senior, "they did. They decided that the system used on the forts of North and South poles was too effective. They moved to space, and cut off slices of Luna, pulled it over on their molecular rays, and used some of the most magnificent apparatus you ever dreamed of. I have just started working on the mathematics of it. "We sent out a fleet to do some investigating, but they attacked, and stopped work in the meantime. Whatever the ray is that can destroy matter at a distance, they are afraid that we could find its secret too easily, and block it, for they don't think it is a weapon, and it is evidently slow in action." "Then it isn't what I thought it was," muttered Arcot. "What did you think it was?" asked his father. "Er--tell you later. Go on with the account." "Well, to continue. We have not been idle. Following your suggestion, we built up a large ray screen apparatus, in fact, several of them, and carried them in ships to different parts of the world. Also some of the planets, lest they start dropping worlds on us. They are already in operation, sending their defensive waves against the Heaviside layer. Radio is poor, over any distance, and we can't call Venus from inside the layer now. However, we tested the protection, and it works--far more efficiently than we calculated, due to the amazing conductivity of the layer. "If they intend to attack in that way, I suspect that it will be soon, for they are ready now, as we discovered. An attack on their fort was met with a ray screen from the fort. "They fight with a wild viciousness now. They won't let a ship get near them. They destroy everything on sight. They seem tremendously afraid of that apparatus of yours. Too bad we had no more." "We will have--if you will let me get to work."