Professor Henderson—for it was he—walked up the bar, and followed Frank Heath's example in the purchase of a cigar Then he glanced leisurely round the apartment. Apparently, his attention was fixed by our hero, for he walked up to him, and said: "Young man, I would like to speak to you."

"All right, sir," said Harry, in surprise.

"If you are not otherwise occupied, will you accompany me to my room?"

"Certainly, sir," returned Harry, in fresh wonder.

"Perhaps he's going to take in Walton as partner," Frank Heath suggested to Tom Frisbie.

"I wonder what he want anyway?" said Frisbie. "Why didn't he take you?"

"Because I'm too sharp," said Frank. "I should see through his tricks."

Meanwhile, Harry had entered the professor's chamber.

"Sit down," said the magician. "I'll tell you what I want of you. I want you to take tickets at the door of hall to-night. Can you do it?"

"Yes, sir," said Harry, promptly.