“The chances are they would be on the lookout for something like that, Billy.”

“And lay for me, you mean, don’t you, Frank? Well, then, if it wasn’t so cold I’d propose slipping down to the water and doing a little swimming stunt. Too bad we didn’t think to have a boat of some kind with us.”

“I was just thinking,” ventured Frank, “that only on account of our being rushed for time we would have installed a wireless plant here, as we’ve often done before. Then we could send all the messages we wanted, and these spies wouldn’t be able to bother with them.”

“Yes, if we had only thought we’d run against a snag like this, Frank, we could have done that as easy as falling off a log. But it’s too late now to bother. The question is, what can we do about it?”

“There’s always one last resort that I know of, Billy.”

“Glad to know it, but please inform me as to its nature, won’t you, Frank? I would give half of my year’s salary just to be able to snap my fingers in the faces of these smart secret agents of the envious Germans who want to steal our thunder.”

Frank turned and pointed straight at the big seaplane.

“There’s the answer, Billy!” he said shortly.

At first the other simply stared as though unable to grasp the meaning of Frank’s words. Then a sudden gleam of gathering intelligence began to show itself in his eyes; he emphatically brought down his fist in the open palm of his other hand.

“Wow! that’s sure the ticket, Frank!” he burst out with, his enthusiasm spreading until his face was one solid grin. “We’ve got a way of escape right in our grip, and I was so blind as not to see it. Run off in the plane, of course, and leave the smarties to bite their fingernails. Great head, Frank! These German spies may think themselves wide-awake, but they’ll have to get up bright and early in the morning to catch two Yankee boys napping, believe me!”