"And stand watches-- and all that sort of thing, the way your uncle
told of it being done aboard ships?" Mollie wanted to know.

"There'll be no need of that," declared Betty. "But we can leave a
light burning."

"To scare away sharks?" asked Amy, with a laugh.

"No, but if we didn't some one passing might think the boat deserted
and-- come aboard to take things."

"I hope they don't take us!" cried Mollie. "I'm going to hide my new
bracelet," and she looked at the sparkling trinket on her wrist.

"Amy, want to steer?" asked Grace, after a while, and the girl of
mystery agreed eagerly. But she nearly came to grief within a few
minutes. A canoeist rather rashly crossed the bows of the Gem at no
great distance.

"Port! Port!" cried Betty, suddenly, seeing the danger.

"Which is port-- right or left? I've forgotten!" wailed Amy,
helplessly.

"To the left! To the left!" answered Betty, springing forward. She was
not in time to prevent Amy from turning the wheel to the left, which
had the effect of swinging the boat to the right, and almost directly
toward the canoeist, who shouted in alarm.