Frank seemed to consider this startling proposition of his cousin, for there were lines about his forehead, and his eyes took on a reflective look.
"Now, I can see already that you don't agree with me wholly," Andy said, quickly for he was accustomed to studying that countenance of his cousin, and could read between the lines.
"Well, I'd hate to think that any maker of aeroplanes could descend that low as to want to steal ideas from any one," Frank answered. "They are few in number, and so far as we know, honorable men. If they wanted to get something that you and I, or any other fellow, had happened to hit on, and which would be of value to aviators, the chances are they'd send somebody to open up negotiations, and offer to buy the improvement outright, or take it on a royalty basis."
"Perhaps you're right, Frank," admitted the other; "but all the same there was something I didn't like about that Mr. Marsh. I warrant you he's a sharp one in a dicker. He looked it. But see here, what've you got to offer in place of my poor little kicked-out suggestion? There's some sort of answer to the puzzle; and five to one you've guessed it."
Frank laughed as he replied:
"Hold on, now, I may be just as far off as you are. As usual we look at things on opposite sides, you know, Andy. But we never disagree, and that's one good thing about our partnership. Either you convince me, or I show you."
"Sure we do, Frank; and nine times out of ten it's your game. When I make a hit it's a great day for Andy Bird. But please hurry up, and tell us what you think!"
"Yes," said Larry, who had been moving restlessly about, being consumed with the fever of curiosity, "who do you say Mr. Marsh and his friend are, Frank?"
"To begin with, just as you did, the fact that they admit knowing many people connected with the game, strengthens my suspicion. I too believe they may be connected with some maker of aeroplanes like the Wrights; but instead of being sent up here to steal our ideas, they have come as detectives, to find out if the Bird boys have been lifting any patented inventions belonging to their employers!"
"Whew! that takes my breath away!" gasped Andy.