Betty hesitated a moment over the question.

Will, Frank and Allen stood just outside the tent of the girls. They
had come back from a hurried race after the white object that had
again disturbed the slumbers of the campers.

"We only had a glimpse of it," answered Will. "Then it seemed to melt
into the water."

"But it was big," said Frank.

"And made lots of noise," added Allen.

"That's just the way it acted before," declared Mollie.

In dressing gowns, warmly wrapped up, and in slippers, the girls were
talking through the opened flap of the tent to Grace's brother and his
chums.

"Can you imagine what it may be?" asked Aunt Kate. She had been making
chocolate-- a seemingly never-failing remedy for night alarms.

"Haven't the least idea," answered Will, "unless it's someone trying
to play a so-called practical joke."

"I'd like to get hold of the player," announced Allen. "I'd run him
off---- "

"Off the scale," interrupted Betty, with a laugh.