"No, Nan. Not now," said Bert. "This is only for us boys."
Nan tried to find out the secret, but they would not tell her.
Two days later, during which the Bluebird cruised about on the lake, Bert said to Harry, after supper:
"We'll watch to-night, and find out what's in that closet. Snap barked and growled every time to-day, that he passed it. I'm sure something's there."
"It does seem so," admitted Harry.
Mr. Bobbsey was steering the boat toward shore, intending to come to anchor for the night, when Flossie, who was standing up in front cried:
"Oh, look! Here's the waterfall! Oh, isn't it beautiful!"
Just before them, as they turned around a bend in the bank, was a cataract of white water, tumbling down into the lake over a precipice of black rocks—a most beautiful sight.
