particular. His wonderful ear had caught a note that was imperfect,
and he had been able to pick out the chap who was guilty. Well, that's
the way with our Joe; only in this case it's his eye that is highly
educated, instead of his ear."

Joel moved aside with Jack.

"Listen to me, Jack," he went on to say, impressively. "Some of the
boys here chanced to mention the fact that last year a Harmony fellow
tried to steal the signals of Marshall, and in fact did so; but the
other fellows discovered him watching the play from a tree or some
place, and they just changed their code of signals after he had been
scared away. Now, Jack, don't look surprised when I tell you I've got
a sneaking notion we're being spied on right at this very minute!"

Jack saw that Joel was not joking, and he looked serious.

"What makes you say that?" he inquired, immediately.

"I haven't mentioned anything about the matter to the fellows; in
fact, I only got on to the game about the time you dropped in. Just
turn to the right a little, will you, Jack. I'm not pointing, because
it would tell the skunk we knew about his being there. See that bunch
of trees over yonder, do you? Pretty thick, all right, and offering a
splendid asylum to any chap who might want to watch what we were doing
out in the open field. He's up in the largest tree, that's right."

"Did you see him then, Joel?" asked the other, after staring for a
brief interval in the direction indicated, without noticing any
incriminating evidence.