“If he’s on that steamer we’ll soon overtake him. He can’t dodge us there as he could on land.”

“True,” assented Frank. “Let us follow him.”

He was just about to go aboard when a number of gendarmes came running up to him.

Frank was surrounded.

“You are my prisoner, sir!” said one of them.

“What do you mean by that?” asked Frank, in surprise.

“You were dueling with a man at the railroad depot.”

“No, no! He was a criminal whom I strove to capture.”

“I care not what he was; you are under arrest.”

Frank was intensely annoyed.