"What do you think I am, a lightning calculator?" demanded Bart. "One at
a time, please! The line forms on this side."

Then he proceeded to tell them what Sandy had revealed.

"Good for Sandy!" exclaimed Ned. "He treated us pretty mean once, but
he's making up for it now."

"Yes, it was a good stroke of business the day we helped him load the
overturned sleigh," said Fenn, referring to an incident of the previous
winter, as related in "The Darewell Chums in the City."

"What are you going to do?" asked Frank quietly.

"I haven't made up my mind," Bart answered. "I thought we'd better tell
the rest of the nine, and then think up some plan to turn the joke on the
Upside Downs."

"Maybe it would be just as well not to tell the others on the nine,"
suggested Frank.

"Why?"

"If you do, it will surely come to the ears of the first-year boys that
we are onto their game. Then they may change their idea and be up to
some dodge that we can't fathom. I guess we four can spoil their plans."

"Well, maybe that would be the best way," admitted Bart. "What do
you propose?"