"But who ever heard of such a thing?" demanded the exasperated customer of the bank. "A hundred printed on one side and a fifty on the other! The printers of bank-notes do not make such mistakes."

"Hold on! Nobody is infallible in this world--not even a bank-note printer," said the banker, reaching into another drawer and bringing forth a large indexed scrapbook.

"Here's a case that happened some years ago. I am a scrapbook fiend, Belding," chuckled Mr. Monroe. "There were once two bills issued for a Kansas bank just like this one you have brought to me. Only this note that we have here was printed for the Drovers' Levee Bank of Osage, Ohio, as you can easily see. This note went through that bank, was signed by Bedford Knox, cashier, and Peyton J. Weld, president, as you can see, and its peculiar printing was not discovered.

"Ah, here we have it!" added Mr. Monroe, fluttering the stiff leaves of the scrapbook and finally coming to the article in question. "Listen here: 'It was found on communication with Washington that a record was held there of the bill, and the department was anxious to recall it. With another bill it had been printed for a bank in Kansas, and the mistake had been made by the printer who had turned the sheet upside down in printing the reverse side. The first plate bore the obverse of a fifty-dollar bill at the top and of a hundred-dollar bill at the bottom, while the other plate held the reverse of both sides. By turning the sheet around for the reverse printing, the fifty-dollar impression had been made on the back of the hundred-dollar bill.'

"Do you see, now?" laughed the banker. "Quite an easy and simple mistake, and one that might often be made, only the printers are very careful men."

Oddly enough, Mr. Belding, although relieved by the probability that the Department at Washington would make the strange bill right for him, was suddenly attracted by another fact.

"I wonder," he said, "if that man came from Osage, Ohio?"

"What man? The one who passed the bank-note on your son?"

"Yes. You know, he was injured and is now in the hospital."

"I don't know. Go on."