The professor threw back his head and straightened his shoulders. It was the real thing in dignity that he showed those plutocrats, and my nerves tingled with admiration. I was sorry I had come to the castle with designs oh Quinn’s portable property, and doubly glad that I could force tribute from these four who were badgering him. "I am not unjust," averred the professor, "and such a thing as abuse is farthest from my mind; but I love the plain people, the bone and sinew of this glorious republic, and it arouses my indignation when the right to live and let live is trampled upon by any one man, or set of men." "Platitudes!" sneered Popham. "To call a truth a platitude is witless argument," answered Quinn serenely. "Be that as it may," said Meigs, "we were not invited here for a debate but to witness a demonstration of what you were pleased to term a revolutionizing discovery." "You have seen me overcome the force of gravity," went on the professor, "and to astute minds like yours further explanation seems uncalled for. In destroying gravity I produce a power equalled by no other force in the world. The ’pull’ of an insulated block the size of that one"—and here he waved his hand toward the cube—"is equal to the strength of a hundred horses. Develop that ’pull’ horizontally instead of vertically, and we have a locomotive that runs continuously without the consumption of a pound of coal. That," cried the professor, his voice ringing with triumph, "is the apotheosis of power!" Gilhooly, judging from his manner, was the victim of uncomfortable thoughts; Meigs wore a startled look, and Markham seemed half convinced. Popham, alone, was brusque and uncompromising. "I think we had better get out of here," again suggested Markham. His half convictions appeared to arouse some small amount of apprehension. "I’m of the same opinion," spoke up Meigs. "Wait a little," suggested Popham, and I saw a gleam in his eyes that meant a stroke of some kind. Once more he faced Quinn. "I have no patience with your harebrained theories," he went on, "and I have seen charlatans work greater wonders than what you are pleased to call your ’demonstration.’ But it is a business principle of mine to buy up these promising theories if they happen to run counter to any pet scheme I am trying to put through. Sir, rather than be annoyed further with this chimerical idea of yours, I will pay five thousand dollars, spot cash, just to have you give over your notions and quit experimenting." Professor Quinn laughed. "Five thousand dollars!" he exclaimed; then added, as though to himself, "He would have me sell the welfare and happiness of the people for five thousand dollars!" "I will add another five thousand to Popham’s offer." put in Gilhooly, "not because I am afraid your discoveries will upset the transportation interests of the country, but simply to clear the commercial atmosphere and keep your visionary ideas from affecting the price of stocks."