"What is the matter, Nan?" he anxiously enquired.

"Oh, let us go away," the girl pleaded. "We are not safe here, and I am so frightened. Two men pushed against me and knocked the hat out of my hand. I know they did it on purpose, for they went away laughing. Oh, what is that?" and she leaned eagerly forward as a commotion took place among the crowd a short distance away.

While the young men were performing their cowardly prank, a man was intently watching all that was taking place. He had been observing the blind violinist and the timid girl for several minutes. In his eyes was an expression of sympathy, which changed at once to intense anger at the act of the two heartless fops. He stepped quickly forward and confronted them.

"What right had you to interfere with that girl?" he demanded.

"It's none of your business," replied the one who had done the deed. "You get out of our way, and do it quick at that, or it won't be well with you."

At once a heavy hand was laid upon his shoulder, and the gripping fingers of that hand caused him to wince and try to tear himself away. A sudden fear smote his heart as he looked up into the blazing eyes of the man before him. He was beginning to respect that towering form with the great broad shoulders and the hand that seemed to weigh a ton and the gripping fingers that were closing like a vise. He suspected that this was a plain-clothes man in the Police service, and the thought filled him with a nameless dread. He glanced around for his companion, but he was nowhere to be seen.

"What do ye want me to do?" he at length gasped.

"Go pick up those coins, and then apologise to the girl for your rudeness," was the reply.

"Good heavens! I can't do that, ye know. What will me chums say?"

"Never mind what they will say. They'll say a great more if I have to drag you there by the coat collar. So get a move on at once."