The chemist applied several solutions to Noddy’s hands, and, under his treatment, the blue color faded somewhat. The chemist knew it could not be taken out entirely, but he did not consider it his place to tell the man so. It was a case of wits being matched against wits, and the chemist favored the side of justice.

“That’s all I can do for you to-night,” Mr. Hosfer remarked at length, speaking in loud tones, so Mr. Newton, in the next room, could hear him. “Come to-morrow or next day.”

“I wish you could finish with me,” remarked Noddy. “I want to get rid of this stain, and go away.”

“I’m doing the best I can,” replied Mr. Hosfer. “Yours is a bad case.”

“It’s a good deal worse than you think,” muttered the man.

A few minutes later Noddy left the house. Mr. Newton was close after him, trailing him along the half-deserted streets. Larry had been left behind, with instructions to await the older reporter’s return.

For a number of blocks Mr. Newton had no trouble in keeping after Noddy. The suspected safe-robber wore a light hat, which was conspicuous among the throng of people on the thoroughfares, most of whom had on dark headgear.

“I think I’ll land him this time,” murmured Mr. Newton. “I’ll not run my head into a Chinese den again, though. He seems to be heading for a respectable part of town. I guess our trick’s going to work.”

It was now about ten o’clock. Noddy had reached Union Square, and was crossing the small park near Broadway. Close behind him, taking care not to be seen, was Mr. Newton. There was quite a throng in the streets, and many vehicles.

Suddenly an automobile, the driver of which seemed to lose his head, rammed a trolley car. The crash was heard for some distance, and, though no one was hurt in the accident, it caused a blockade. Noddy halted to see what the trouble was, and Mr. Newton found himself on the outskirts of quite a crowd that was collecting.