"'E's a terror," said the old man, in a hasty undertone; "e's a Hooligan--the worst of 'em--their boss."

"I don't care," said Jim; "I can tackle him."

At length the Hooligan managed to unclasp his belt, but even as he did so two policemen entered the shop.

"Now then--get out of this--quick!"

They knew him--evidently. They were two to his one. And there was Mortimer near at hand to help if required.

The Hooligan was not without some regard for his personal well-being. Directing a scowl of hate at Jim, he put on his belt again and left the shop, followed by the girl.

"Same old game?" said one of the constables to Mr Harris.

"I didn't see it all--but I believe this gentleman knocked 'im down," replied Mr Harris. "'E's the noo doctor over the road."

The policeman eyed Jim with interest.

"I'd advise you to be careful, sir," he said; "that's the most dangerous man in these parts. He's just done six months, and only came out three days ago. We've been keeping an eye on him."