"Give me my money, then."

"If you don't stop that, I'll knock you down," repeated the pickpocket, shaking off Ben's grasp, and moving forward rapidly.

If he expected to frighten our hero away thus easily, he was very much mistaken. Ben had too much at stake to give up the attempt to recover the letter. He ran forward, and, seizing the man by the arm, he reiterated, in a tone of firm determination, "Give me my money, or I'll call a copp."

"Take that, you young villain!" exclaimed the badgered thief, bringing his fist in contact with Ben's face in such a manner as to cause the blood to flow.

In a physical contest it was clear that Ben would get the worst of it. He was but a boy of sixteen, strong, indeed, of his age; but still what could he expect to accomplish against a tall man of mature age? He saw that he needed help, and he called out at the top of his lungs, "Help! Police!"

His antagonist was adroit, and a life spent in eluding the law had made him quick-witted. He turned the tables upon Ben by turning round, grasping him firmly by the arm, and repeating in a voice louder than Ben's, "Help! Police!"

Contrary to the usual custom in such cases, a policeman happened to be near, and hurried to the spot where he was apparently wanted.

"What's the row?" he asked.

Before Ben had time to prefer his charge, the pickpocket said glibly:—

"Policeman, I give this boy in charge."