"Say, this is a dandy place!" he exclaimed as he looked about at the tents and at the boat floating in the little cove. "I'll just love it here!"
"It's awful nice," agreed Jan.
"And there's a mystery here, too," added Ted
"What do you mean?" Hal demanded. "What's a mystery?"
"Oh, it's something queer," went on Ted. "Something you can't tell what it is. This mystery is a tramp."
"A tramp?"
"Yes. Jan saw him when she was picking flowers, and he pulled Trouble out of the spring afterward. And there's a cave here where maybe he sleeps, 'cause there's some bags for beds in it. He's looking for something on this island, that tramp-man is," declared Ted.
"Looking for something?" repeated Hal, quite puzzled.
"Yes. He goes all around, and we saw him picking up some stones.
Didn't we, Jan?"
"Yes, we did."