"That's good," smiled Wilson, "because I'm short a match. One of the pair who were to come on after you and Thompson is rather under the weather and the doctor won't let him take part, though he's game as a fighting cock and wants to go on anyway. If you felt in shape for it I thought perhaps you might help out by taking on some other fellow for a few minutes so that the boys won't be disappointed."
"Sure thing," said Frank. "Bring him along."
"I haven't got anyone picked out, just this minute," said the corporal a little perplexedly.
"Send out a call for volunteers," Frank suggested. "It will make it all the more interesting."
"That's the idea," said the corporal. "Any of you fellows want to put on the gloves with Sheldon?" he called out.
There was a momentary hush and then a figure rose from the throng and Nick Rabig pushed his way through to the platform.
CHAPTER XXI
PAYING A DEBT
Frank gave a start of surprise as he saw who his opponent was to be, and Bart, who was acting as Frank's second, leaned over him with a word of warning.