“Oh, that’s very simple,” he replied with a laugh. “Merely transference. Now, if the person in the audience is quite through with the handkerchief I’ll ask him to return it by one of the ushers.” Billy’s eyes ranged questioningly from Dick to Chub and back again, while he smiled politely and expectantly. Then, “I say if you are quite through with the handkerchief,” he announced in a louder voice, “you will be kind enough to return it.” Chub and Dick grinned. Roy stood on his other foot for a change and grinned too. Billy pretended to be cross. “Really, ladies and gentlemen,” he said, “I assure you that I can’t go on with the performance until the handkerchief is returned. I know where it is and if the gentleman who has it doesn’t return it at once I shall be obliged to call on one of the ushers for assistance.” The audience made no reply. “You, there,” cried Billy, pointing suddenly at Chub. “There’s no use in acting this way. The handkerchief is in your right-hand coat pocket. Kindly return it, sir!” Chub nearly jumped off his soap-box. Then he stared dazedly at Billy for a moment, finally dropping one hand into the pocket specified, a look of incredulity on his face. But he found it, or at least he found something, for, “_Thunder!_” he yelled, jerked his hand out again and jumped to his feet as something fell to the ground with a soft _thud_. The something went hopping away toward the tent door amidst howls of laughter from Roy and Dick. It was a large fat toad. Chub stared at it until it had hopped from sight. Then he stared at Billy. Finally he stared at Roy and Dick, and those youths went into spasms of even more riotous laughter. “Gee!” said Chub finally, and sat down again after looking at the soap-box carefully to see that there were no more toads about. “You’d better look in your pocket again, Chub!” cried Dick. “There may be another!” Chub obeyed the suggestion very gingerly and heaved a sigh of relief when he found the pocket empty. “My mistake,” said Billy easily, when the laughter had subsided. “I beg your pardon, sir. Had I known that you were in the habit of carrying pets around with you I should have been more careful, sir. I’m very sorry, really. You’ll pardon me, I trust?” Chub grinned sheepishly and Billy was silent a moment, frowning intently at the lantern. Then, “Ah!” he exclaimed. “How stupid of me! Really, ladies and gentlemen, I don’t know when I’ve made such a foolish mistake before! I am really chagrined, I assure you!” He turned to Roy beside him. “You, sir, are at liberty to return to your seat. I thank you very much.” Roy smiled, hesitated, and moved toward his bed upon which he had been seated when summoned to assist “the Professor.” But he wasn’t destined to get off so easily, for: “Oh, but one moment, sir, if you please,” said Billy. “You had better leave the handkerchief here, hadn’t you?” Roy stopped and smiled helplessly. “I suppose so,” he said, “if I’ve got it.”