The monster disappeared. Presently Watkins said, "It's in. I'm sleepy." Summersby stretched as tall as he could and put his mouth to the crack, trying to breathe only what air came through from the nursery. He saw the enormous child pass on its way to the door, and shortly the sound of its heavy feet stopped. He felt drowsy, his eyelids flickered. He beat his hands together, sucking in air from the opening. Villa started to snore. Watkins said, "I'm about done, Summersby." He was kneeling at the crack below Summersby, and his voice was sluggish. In a few seconds he rolled over on the straw. When did the adults come in to clean up? Summersby didn't dare wait much longer. He was fighting sleep with all his vigor. Possibly they wouldn't come till morning. He had to chance it. He forced his fingers into the gap and heaved. The wall didn't move. Holding his breath, he propped one foot against the adjoining wall, dug his hands as far into the breach as possible, and hurled himself backward. The big door jolted an inch, hung, then slid back a couple of feet. He swung around and jammed himself through the aperture and the wall moved silently back into place; this time the dowel was not there, and when the wall stopped, there was no crack at the corner. Summersby must have kicked the dowel aside when he slid through. Watkins was inside, asleep. He breathed deeply, and the effects of the sleep gas died, so that he was wide awake and felt very excited and eager. To analyze the reasons for his eagerness would have killed it, and besides he was in a hurry. He ran to the great door of the playroom, whose lintel towered twenty feet from the floor. Hastily he tossed apparatus, boxes, toy blocks, until he had made a pile five feet high. Scrambling up this, the things sliding under his feet, he waved an arm above his head in the place where he believed the electric eye beam to be. Then the pile collapsed, and he fell into it, giving one knee a terrific crack and skinning his knuckles. The door glided open. The next room was deserted, and the soft bluish light was dimmer here than in the nursery. This place was far less cluttered, containing no more than a big yellow machine, a gigantic table, and two six-legged chairs. There was a picture on the wall, the size of a barn's side, which he did not stop to look at. The opposite door was open. The third room was a dining hall, with two tables and a number of chairs, these of metal with eight legs each. Luckily, there was no one in it. In the next room--all four were in a straight line, and he thought, Either it's a long narrow house, or else it's as big as Rockefeller Center--there were a number of gadgets, colorful and complex like the children's toys, but of different construction. He glanced at them but did not pause until he came to the next door. It was closed. He presumed its opener beam would be in the same place as that of the playroom, and looked around for something to stand on.