After what he had told them about sharks, Sumner and Worth concluded not to sleep in their canoes that night. They might have done so with perfect safety, however, for no shark was ever known to overturn a boat for the sake of getting at a human being inside of it.

The next morning the mail-boy's prediction in regard to the east wind was verified. It was blowing briskly at sunrise, and already a big sea was rolling in, combing and booming on the bar. Their boats would not live in it a moment, and consequently they must stay where they were until the wind changed.

After breakfast the Lieutenant sat in his tent writing, the sailor was repairing a torn sail, Quorum was taking a nap, and the boys were left to their own devices for amusement. An hour or so later Lieutenant Carey, the sailor, and Quorum were startled by loud calls for help from the beach, and hurried in that direction to see what new scrape the "young rascals," as the Lieutenant called them, had got into now.

Chapter XXXVII.
FISHING FOR SHARKS.

In strolling along the outer beach, picking up curious sponges and bits of coral, the attention of the boys was also attracted to the shadowy forms of great fish that they could distinguish every now and then darting along the green base of the combers just before they broke.

"Do you think they can be sharks?" asked Worth.

"Yes," replied Sumner; "I am almost sure they are."

"My! but I wish we could catch one! I have never seen a shark out of water."

"I shouldn't wonder if we could. I've got a shark-hook in the Psyche, and our Manila cables, knotted together, will make just the kind of line we want."