e run out
exactly on that course and missed the wooded point which guarded the
entrance to the cove.

Suppose the thing she had hit when she dived was the _Bright Eyes_,
Dr. Shelton's lost motor boat?

Wyn was about to shout to the other girls--to call them around her to
divulge the idea that had come into her mind--when a hail from the water
announced the return of the Busters.

She remembered Mr. Lavine's promise. The two clubs were rivals in this
matter. Wouldn't it be a fine thing for the Go-Aheads to own a motor
boat all by themselves!

Wyn got up and dived again. But she did not dive toward the mysterious
something that she had previously found. She swam stoutly instead to
meet the coming Busters.

CHAPTER XXIV

THE NIGHT ALARM

Wyn Mallory had "another mind," as the saying is, before the Go-Aheads
left the island and paddled swiftly for their own camp.

She determined not to say anything to her girl friends of the club about
the sunken object she had hit under the water. Perhaps it was nothing of
any consequence; then they would laugh at her. If it _was_ the lost
motor boat, to tell the girls might spread the story farther than it
ought to be spread at once.

The Go-Aheads and the Busters were rivals. Mr. Lavine had promised the
prize to whichever club found the sunken boat and the box of silver
images that Dr. Shelton had accused John Jarley of stealing.

"And it may not be anything, after all," thought Wyn. "It may be a false
alarm. Then the _boys_ would have the laugh on us."

To make sure of what she had hit when she dived seemed to Wyn to be the
principal thing. And how could she make sure of this without going down
specially to examine the mystery?

"How under the sun am I going to do that without the boys seeing me?"
she mused. "And if I take the girls into my confidence they will all
want to be there, too--and then sure enough the Busters will catch us at
it. Dear me! I don't know what to do--really."

She had half a mind to take Frank into her confidence; but, then, Frank
was such a joker. The girls and boys had often talked about hunting for
the missing motor boat; but since Mr. Lavine had gone back to Denton,
after the regatta, neither club had seriously attempted a search for the
_Bright Eyes_.

Polly had told Wyn how men from Meade's Forge had searched for the boat
when she was first lost; and some of the bateau men had kept up the
search for a long time. Had the motor boat