That evening after supper the boys stole silently through the woods to the northeastern end of the island. The Sly Hole was empty! The sloop had gone!

Stepping out of the evergreens, Jim looked westward along the shore.

"There they are!"

The dory towing astern was piled high with traps.

"Shouldn't wonder if they had some of ours among 'em!" exclaimed Jim. "No matter! We're getting rid of 'em cheap, if they scoop a dozen! But look at that! They've got all they want, and now they're cutting away our buoys! Here's where I call a halt!"

He sprang out upon the bank in plain sight.

"Hi, there! Stop that!"

One of the men had just gaffed a buoy. At Jim's hail he glanced up and waved his hand nonchalantly. Then he deliberately cut the warp. The other man dropped into the cabin and reappeared with the two guns. Jim threw himself flat on his face.

"Down, boys!" he cried.

A hail of birdshot peppered the bluff and the woods behind it as both the double-barrels roared out in unison. One leaden pellet drew blood from the back of Jim's hand, while Throppy, a little slow in dropping to cover, was stung on the cheek. The others were untouched. Percy shook with fright and excitement. Lane was boiling with anger.