"How did he do it?" asked Jack, a tremble in his voice.
"He must have been an acrobat of the first water to manage such a thing!" declared Harry. "I thought he was as secure as anything."
"Too late now to help him, and we've still got the German aeroplane to reckon with," warned Ned. "Keep a sharp lookout for the fellow!"
"What is the stranger doing now?" asked Jack, pointing to the plane that had appeared from the westward.
"He seems to be heading directly for us," replied Ned. "I wonder if he takes us to be Germans, trying some trick or other."
"Better take off these German uniforms," advised Jimmie, stripping off his jacket as he spoke. "I'm going to drop mine overboard!"
As he spoke the lad flung the jacket as far as he could and watched its descent with interest. The others were not long in following his example.
"I'll tell you what we'll do!" offered Dave. "When we get near enough, shut off the engine so it won't make any noise and we'll all shout 'Vive la France!' at him. He'll know then we're not enemies."
"Good idea, but I can't speak French," returned Jimmie.
"Well, then, try something!" urged the lad.