"Well, hardly," laughed the other. "How's that, Longley? Quite interesting to run across a couple of boy inventors up this way. Must tell Wright about it the next time we see him, and Curtiss too. They'll want to look them up perhaps, and coax them to join the new aeroplane trust that's forming. But what makes that biplane shine so? It glitters in the sunlight like silver."
"That's just what me and Elephant were talking about when you came along, mister," remarked Larry.
"And we just came to the conclusion that it must be something Frank's been experimenting on. Mebbe he's made his machine out of aluminum; or else he's got a new Kinkaid engine that has a lot of brass about it. Gee! look at 'em now, Larry! My heart jumped up in my throat because they just skimmed the water, and I was dead sure it meant a ducking for the boys."
"They certainly seem to know how to handle an aeroplane as well as any one I have ever seen," declared Mr. Marsh; who apparently could not tear his eyes away from the thrilling spectacle of the swooping air craft, that soared aloft, only to again dart daringly down toward the surface of the almost quiet lake.
"I bet you it's a game of conquer they're playing," suggested Elephant. "Each one seeing how close to touching the water he can come. Say, Larry, d'ye suppose Percy Carberry has got his new biplane yet? He's been boasting about it for weeks, and what he meant to do when she arrived."
"I saw him this morning, and he said he was still waiting; but that the thing had been shipped," replied the other. "Never saw such an unlucky dog as Percy is; and to tell the honest truth, Elephant, 'twouldn't surprise me one little bit if the old train got smashed up on the way, and the new flying machine along with it."
"Wonder if he's watching the stunts them fellers are doing out there, and saying all sorts of mean things about 'em?" suggested the smaller boy, grinning.
"Shouldn't wonder," Larry chirped. "He keeps tab on all Frank does these days. You know they've had to keep a man on duty every night around that workshop, because of Percy. He ain't to be trusted, and would just as soon put a match to the place as eat his dinner—if he thought he could do it on the sly."
Mr. Marsh caught the eye of his companion, and instantly a quick signal seemed to pass between them, unnoticed by either of the two boys, who were keeping their attention glued on the fluttering aeroplane a quarter of a mile away, and which had again mounted to quite a little height by means of boring upward in circles.
"There they go again!" exclaimed Elephant, excitedly, as the flying machine once more tilted its planes, and started down toward the water like a huge bird intending to alight.