For reply the other beckoned, and started hurriedly to gain the shelter of the woodshed near by.
"What's this for?" questioned Andy, when they were once more crouched down, in a position where they could not be easily seen.
"Stop and think," answered the other; "if he just happened to look out of a window on this side of the house he'd see us easily and our suspicious actions would tell him we were on to his game. Now even if he looks he won't see anything."
"Huh! and do we stay here all afternoon just doing nothing; while p'raps he's taking a nap indoors?" grumbled the other, who wanted to be moving, and was never satisfied when not in action.
"Wait!" was all Frank would say.
Perhaps he could see further ahead than his cousin, and guessed something of what was likely to occur. They had not taken pains to warn Sallie or her mother to keep from mentioning the fact of their happening around; and chances were, that as soon as Casper Blue heard that the Bird boys had dropped in, he would become immediately suspicious.
On questioning the girl he would be apt to learn how curious Frank and Andy had seemed about him; and Sallie might even admit that they had asked to see his wonderful collection of rare and costly butterflies.
Well, if such a thing did occur, of course the keen-witted man would immediately know that the cat was out of the bag. Realizing that there must be a great hue and cry throughout the entire county just then, with reference to the yeggs who had looted the bank, he could easily imagine what had brought these boys here.
Through association with Todd Pemberton, Casper must have learned a whole lot with regard to Frank and his cousin. Being an aviator himself he would naturally take an immediate interest in boys who had given such a good account of themselves in the field of aeronautics. The attempt to steal the hydroplane in the first place before they turned to Percy Carberry's biplane proved that they knew all about the Bird boys. And so, learning of their presence would immediately give Casper warning that his hideout was no longer a secret, but that the net of the law must be closing around him.
What then?