"Don't be ridiculous," snapped Mollie, her thoughts working along with
Betty's. "You know you don't believe in ghosts."

"But how----" Amy was beginning when Betty interrupted sharply.

"Listen," she said. "I came across an old derelict of a rowboat the other
day when we were exploring the upper river, but I didn't say anything to
you girls about it because I thought it was too much of a wreck to bother
with. For all I know it isn't even water tight--"

"Betty," Mollie broke in excitedly, "I see what you mean! We can row
across the upper river to where Professor Dempsey is--Were there oars in
the boat?" she broke off to ask.

"A couple of old sticks that would serve for oars," Betty answered. "Of
course it's taking a big chance--"

"Say no more," cried Mollie, jumping to her feet and wringing out her
bathing suit. "Big chance is our middle name anyway. Lead on, Betty. Where
do we find this craft?"

"I'm not quite sure that I can find it," said Betty, leading the way into
the woods, "but it was down this way somewhere. Don't make any noise,
girls, and let's hurry, or we won't get there before he disappears again."

Grace and Amy were now entering into the spirit of the thing, and they
followed at Betty's heels eagerly, careful not to step on stick or stone
that might betray their presence.