"O, about fifty."

"You didn't, though—did you? How much did you make?"

"About fifteen dollars."

"By jolly! You are a smart one, Bobby. There are not many fellows that would have done that."

"Easy enough," replied Bobby, who was not a little surprised at this warm commendation from one whom he regarded as his enemy.

"You had to buy the books first—didn't you?" asked Tom, who began to manifest a deep interest in the trade.

"Of course; no one will give you the books."

"What do you pay for them?"

"I buy them so as to make a profit on them," answered Bobby, who, like a discreet merchant, was not disposed to be too communicative.

"That business would suit me first rate."