The four boys stood in the waist of the boat straining their ears for a repetition of the sound that had floated out over the black waters.
"There it is again," whispered Frank. "It seems to be dead ahead." Again they held their breaths and listened.
"Help, help," came a faint voice. There was no mistaking it this time.
"Some one in trouble, and worse off than we are," said the Codfish.
"There it is, louder."
"Hello! Hello! Help! Help!" came floating to their ears.
"Some one drowning out there," said Lewis, shivering.
Again rose the cry, this time shriller and stronger.
"I believe it is some one on Flat Rock," said Frank. "I can't see, but the rock ought to be just ahead of us. What can any one be doing there? Flat Rock is all under water at high tide. That would be a bad fix, for certain sure."
"Let's give a call," added Frank. The boys, uniting their voices, shouted: "What's the matter? Who is it?"