CARL TURNS A TRICK.

Something has been said about Carl Pretzel having an idea that was almost an inspiration, at the time he was approached by the Hindoo at the aëroplane.

This it was that led him into the monkey wagon. The slam of the door and the grate of the key in the padlock struck a sudden tremor to the Dutch boy's heart.

Was he making a fool of himself or not? Would a trained detective have proceeded in that manner?

His heart failed him, and he gave the wild yell for help.

He had hardly given the cry before he repented of it. What would Motor Matt think of his nerve if he could know the game he had embarked upon, and how he had been stampeded in playing it?

No; if that call had done no harm, Carl would not repeat it. He would see the business through and try and match wits with the Hindoo.

In spite of the noise on the show grounds, Carl heard Ben Ali's heels bang against the end of the wagon, and also the stern voice commanding him to keep silent.

Carl kept silent. He was almost smothered by the closeness of his prison chamber, and the terrific odor that assailed him, but he comforted himself with the thought that detectives don't always have things their own way when they're tracking down a criminal. Anyhow, even his present discomfort was better than the hard knocks his "sleuthing" had so far given him.