In the opposite direction, perhaps a hundred yards away from where they were standing, they could see the bottom of the door. It hung in the air some fifty feet above the surface of the ground. They walked over and stood underneath; like a great roof it spread over them--a flat, level surface parallel with the floor beneath. At this extraordinary change in their surroundings Aura seemed frightened, but seeing the matter-of-fact way in which her companion acted, she maintained her composure and soon was much interested in this new aspect of things. The Very Young Man took a last careful look around and then, holding Aura by the hand, started to cross under the door in a direction he judged to be at right angles to its length. They walked swiftly, trying to keep their sense of direction, but having no means of knowing whether they were doing so or not. For perhaps ten minutes they walked; then they emerged on the other side of the door and again faced a great level, empty expanse. "We're under," the Very Young Man remarked with relief. "Do you know where Loto is from here?" Aura had recovered her self-possession sufficiently to smile. "I might, perhaps," she answered, with a pretty little shrug. "But it's a long way, don't you think? A hundred miles, it may be?" "We get large here," said the Very Young Man, with an answering smile. He was greatly relieved to be outside the audience room; the way seemed easy before them now. They took the opposite drug, and after several successive changes of size, succeeded in locating the upper room in the palace in which Loto was held. At this time they were about the same relative size to their enemies as when they entered the audience chamber on the floor below. "That must be it," the Very Young Man whispered, as they cautiously turned a hallway corner. A short distance beyond, in front of a closed door, sat two guards. "That is the room of which they spoke," Aura answered. "Only one door there is, I think." "That's all right," said the Very Young Man confidently. "We'll do the same thing--go under the door." They went close up to the guards, who were sitting upon the floor playing some sort of a game with little golden balls. This door, like the other, had a space beneath it, rather wider than the other, and in ten minutes more the Very Young Man and Aura were beneath it, and inside the room. As they grew larger again the Very Young Man at first thought the room was empty. "There he is," cried Aura happily. The Very Young Man looked and could see across the still huge room, the figure of Loto, standing at a window opening. "Don't let him see us till we're his size," cautioned the Very Young Man. "It might frighten him. And if he made any noise----" He looked at the door behind them significantly. Aura nodded eagerly; her face was radiant. Steadily larger they grew. Loto did not turn round, but stood quiet, looking out of the window.