Brace darted down at the struggling men. He stood up a moment later, holding the gun. Carsing struggled upward, out of Harvey's grasp and reached for the gun. Brace's foot shot out and crashed with ferocious impact against his jaw. Carsing's head slammed backward against the floor. His body arched a moment, and then went limp all over. Harvey sat up, breathing hard. Ruth already had her oxygen pack on and quickly adjusted his. "Get mine," Red Brace said. He was standing in the middle of the floor, the gun trained on Baker, who stood half-slumped against the wall, watching them dazedly. There was a hissing in the air. A soft, persistent hissing. "Somebody has a leak!" Dr. Lurie shouted. Harvey, Ruth, Brace frantically felt their oxygen packs--and then their hands stopped, and they stared at Baker. A jagged hole, caused by a small bit of shot, was visible on the side of his oxygen pack. "Give the orders, Flanders," Brace said. "Do I blast him?" "Won't be necessary, Red," Harvey said quietly. Baker looked from one to the other with puzzled eyes. Then he muttered, "I must be going," and swung away from the wall, and out the door. He stopped. He felt his pack. He came rushing back, his eyes wide with terror. "A leak!" he shrilled. "I need another pack!" "Sorry, we've only one apiece," Harvey said. "You know that." Baker's lips trembled. His face was white. "Your invention! Your invention! I'll make any deal you want. Hurry!" "There's no invention," Harvey said gently. "Don't you know that by now?" Suddenly Baker leaped forward, his hands flying. He had the oxygen mask half off Harvey's face before Harvey could untwist his hands and wrench free. Baker stood there, breathing hard. Abruptly he turned and rushed out to the road. "Somebody!" he yelled. "Somebody give me a pack! I'll pay anything!" Homesteaders peered at him in amazement from their doorways--then shut their doors as he rushed at them. "I'll pay anything!" Baker screamed at the pitilessly closed doors. "This is what he was leading up to for ten years," said Brace. Harvey looked at the purple box. "A jack-in-the-box," he said softly. "Ruth where in the world did this thing ever come from?" "I brought it with me," Ruth said defiantly. "I thought maybe it might be hard to get toys here--and maybe we might want toys someday ... for somebody." Carsing stirred and groaned. "That's a relief--we're going to need the man to show us how to run the oxygen works," Harvey said. "Okay, kids, let's go to work. There's a lot to be done." "Going to try to get a ship for the trip back home?" asked Brace. "I don't know," said Harvey. "Maybe we can make a go of it after all," he went on dreamily, "we might be able to pump oxygen into the houses so you don't have to wear a mask when you're home relaxing ... or making love." He put an arm around Ruth's shoulders. "Who knows?--maybe one of these days we might find use for those toys you brought."