"We must have lost our way," suggested Dorothy.
"Nonsense," said the Lion. "I, and all the other animals, have been tramping straight toward the city ever since we first saw it."
"Then how does it happen—"
"Never mind," interrupted the Wizard, "we are no farther from it than we were before. It is in a different direction, that's all; so let us hurry and get there before it again escapes us."
So on they went, directly toward the city, which seemed only a couple of miles distant; but when they had traveled less than a mile it suddenly disappeared again. Once more they paused, somewhat discouraged, but in a moment the button eyes of Scraps again discovered the city, only this time it was just behind them, in the direction from which they had come.
"Goodness gracious!" cried Dorothy. "There's surely something wrong with that city. Do you s'pose it's on wheels, Wizard?"
"It may not be a city at all," he replied, looking toward it with a speculative gaze.
"What could it be, then?"
"Just an illusion."
"What's that?" asked Trot.