He was half tempted to remove it to another pocket, from which it could be produced more easily and expeditiously, but, being aware he could not do this without being seen by those around, he refrained.

The man who had spoken to him was crossing the square, and Merry followed at a distance. The man turned into the Rue Auber, and still he did not look back. It seemed plain that he fully expected Frank to follow him without hesitation.

Merry felt that he was entering upon a most peculiar adventure, and he seemed to scent danger in the air. There was something mysterious and awesome about the affair. He felt that an unseen tie connected him with the wretched captive far away on a barren, rock-bound island, in the midst of a torrid sea. Perhaps, at that moment, he held the fate of Dreyfus in his grasp!

Frank was resolved that no man should receive the metal ball from him till he had first given the signal complete, as described by Edmond Laforce.

“Guard that tiny ball with your life,” the duke had said.

“I will!” Frank vowed.

The man he was following turned into another street, and still Merriwell followed him, on and on. After a time, the youth began to wonder if he had not been mistaken. Surely, the man would pause, or look back, if he had expected Frank to follow.

“Well, as long as I have pursued him thus far, I’ll keep it up,” Merry decided.

At last, the man stopped before a little shop, from the windows of which a light shone. Still without looking back, he lifted his hand, and pointed at the door of the shop. Then he entered. In front of that shop, Frank stopped. In his ear something seemed whispering a warning.

“If I am in danger,” he thought, “where is Mr. Noname, who has warned me so many times?”