"There is a man lying in the bottom of that boat."

"How do you know?"

"I saw him lift his head to look at us a few moments ago."

"That's strange."

"It's plain enough he doesn't want to be seen."

"What does it mean?"

"Don't know."

They watched the flying boat take the lead of them and saw it bear toward a distant rocky point of the island ahead. Near that point some sagging sheds could be seen. The small boat rounded the point and was hidden behind the island.

"There is Bold Island, famed for its wonderful clams, over yonder," said Frank. "Bold Island harbor must lay between that and Devil Island, but I didn't find it on the chart. However, there is a passage between the two islands which is perfectly safe at high water. We will run down in there and drop anchor as near Devil Island as possible."