CHAPTER II—A MISHAP

All three boys bent their heads and listened intently. The only sound that came to them, however, was the soft sighing of the breeze through the treetops and the occasional call of some bird preparing to settle down for the night. The sun was low in the west, just sinking below the fringe of the forest which skirted the little lake. All seemed quiet and serene.

“What did you think you heard, Fred?” demanded Grant after the lapse of several moments.

“I thought I heard a call. In fact I was almost—”

Once more he stopped suddenly and listened. “What was that?” he exclaimed.

“I heard something, too,” whispered John excitedly. “Listen!”

“I don’t hear a thing,” muttered Grant. “I must be deaf.”

“There it is again,” cried Fred suddenly.

“I heard it, too,” exclaimed John. “It came from that end of the island.”