“Oh! a mystery is it?” I cried, rubbing my hands. “This is very piquant. I am much obliged to you for bringing us together. ‘The proper study of mankind is man,’ you know.”

“You must study him, then,” Stamford said, as he bade me good-bye. “You’ll find him a knotty problem, though. I’ll wager he learns more about you than you about him. Good-bye.”

“Good-bye,” I answered, and strolled on to my hotel, considerably interested in my new acquaintance.