"Well, then, have you ever read anything by Wells? The 'Time Machine,' for instance?"
Again she shook her head.
"I don't know how I'm going to say it so you'll understand, but time is just as much a dimension as length and breadth. From what I can judge, I'd say there has been an earthquake, and the ground has settled a little with our building on it, only instead of settling down toward the center of the earth, or side-wise, it's settled in this fourth dimension."
"But what does that mean?" asked Estelle uncomprehendingly.
"If the earth had settled down, we'd have been lower. If it had settled to one side, we'd have been moved one way or another, but as it's settled back in the Fourth Dimension, we're going back in time."
"Then—"
"We're in a runaway skyscraper, bound for some time back before the discovery of America!"
III.
It was very still in the office. Except for the flickering outside everything seemed very much as usual. The electric light burned steadily, but Estelle was sobbing with fright and Arthur was trying vainly to console her.