"How many now?" asked Sherman, from the controls, as the squadron swung back southward and the scarred mountain swam over the horizon again. "Two--five--nine--eleven--oh, I can't count them all," said Gloria, "they keep changing formation so. There's a lot of them and they're coming up toward us, but slowly. They haven't got that blue beam at the base any more, either--you know the one that globe we got after was riding on." As they approached it was indeed evident that the green globes were rising slowly through the twilight in some kind of loose formation. It was too complex for the American observers to follow in the brief glimpses they were vouchsafed as they swept past at hurricane speed. There seemed to be dozens of the Lassan globes; as though they expected to overwhelm opposition by mere force of numbers. Nearer and nearer came the rocket-ships, nearer and nearer loomed the sinister Lassan globes, betraying no signs of life, silent and ominous. "Go?" called Sherman from his seat at the controls. "Go!" said Ben. The _Monitor II_ dived; and as she dived, Gloria Rutherford switched on the deadly beam of the searchlight which would carry the gravity-beam against their enemies. For a moment it sought the green globes; then caught one fairly. Ben Ruby threw the switch; and down the light beam leaped the terrible stream of the broken atoms like a wave of death. Leaped--and failed! * * * * * For as it struck the green globe, instead of the rending explosion and the succeeding collapse, there came only a bright handful of stars, a coruscating display of white fire that dashed itself around the Lassan ship like foam on some coast-rock. It reeled backward, driven from its position under the tremendous shock of the sundered atoms, but it remained intact. "Well, I'm a son-of-a-gun!" declared Sherman, as he put the _Monitor_ into a spiral climb at nine hundred miles an hour to avoid any counter-attack. "If they haven't found a gravity screen! I didn't think it was possible. Goes to show you you never can tell, especially with Lassans. Look out folks, here comes the gaff, I'm going to loop!" For as he spoke the formation of green globes had opened out--swiftly by ordinary standards, though slowly in comparison with the frantic speed of the American rocket-vessel. From half a dozen of them the racking yellow ray of infra-sound leaped forth to seek the audacious ship that had attacked them single-handed. All round her they stabbed the atmosphere, striking the few clouds and driving them apart in a fine spray of rain, but missing the _Monitor_ as she twisted and heaved at frantic speed. Twenty miles away and high in the air they pulled up to recover themselves.