"What's the matter with the whole solar system?" inquired Quinn, with gentle irony. He turned to me. "Observe, Mr. Munn, how extravagant are the ideas inspired by monopoly! These gentlemen are hardly started on their journey into space before they forget the business interests, the friends and the environment they are leaving behind and begin planning the commercial conquest of the stars!" He shook his head forebodingly. "Your regeneration," he added to the millionaires, "calls for a landing on some barren world, some outcast of the solar system, where you will have nothing to do but think over the evil of your past and learn something of the duty you owe your fellow-men."

Popham, Markham, and Meigs were visibly annoyed by the professor's remarks. Withdrawing as far as the limits of the steel structure would allow, they put their heads together and held a brief but animated conversation in tones so low that the professor and I could not overhear.

"Think of that, professor!" I muttered. "And yet there are people who find fault with a respectable burglar."

"Softly, Mr. Munn," returned Quinn. "Before we are done with this journey I am fain to believe that all of you will have a different outlook upon life, and a higher regard for your duties of citizenship."

Just then, Popham turned from his friends and stepped toward the professor. His manner was truculent—probably just such a manner as he was accustomed to use in facing a board of obstinate directors.

"If you will not return us to our native planet, Professor Quinn," said he sharply, "then we shall stand upon our rights. We are unalterably opposed to landing upon any orb whose diameter measures less than——"

At that instant a most astounding thing happened. The car ducked sideways, throwing the whole structure out of plumb.

Loose articles began to drop from shelves and other places and to slide across the floor to the lowest point. By a quick movement I saved the lamp and braced myself in an upright position.

Cries of terror went up from Markham, Meigs, and Popham.

"Where's Gilhooly?" shouted the professor.