“So it was that cur, just as I expected!” Frank felt a glow of indignation pass over him at the conviction that he had by this simple but positive means of identification discovered the thief who had not only stolen the examination paper, but tried to rob him of his good name. He and Lef had always been at war. Bitter rivals in all things, they had on many occasions faced each other on opposite sides. And because Frank usually managed to win in these contests Lef hated him bitterly. Frank was puzzled as to what he should do. His first thought was to hasten to the principal’s office and show him the proof of the charge he could make. Then he shook his head. Somehow that seemed to be too severe, for it would possibly result in the expulsion of the other student of Columbia High. And Frank hardly fancied having such a responsibility thrust upon his shoulders. “I’ll charge him with it, and if he says he’s sorry, let the matter go. Anyhow, the mischief’s done. Those papers will have to go back, and others be sent on. The little experiment has afforded me more or less amusement, and that counts for something. If I can only get Lef over here alone.” A bright thought struck Frank even while he was puzzling over this matter. “That’s the idea--I can slip into the lunch room, and coax him there.” First of all he carried the tray of moulding clay through the convenient door. Mrs. Louden, who had charge of the lunch counter, was still busily engaged. She made it a rule to linger when a bunch of the boys were working in the adjacent gymnasium, since that sort of thing developed enormous appetites, and many an extra dollar found its way into her till through this afternoon source. After doing this Frank passed outside again. “How?” remarked Lanky, as he sidled up alongside his friend. But this was not intended to be an Indian salutation. Lanky was deeply interested, and wanted to know. “I was right,” said Frank. There was no exultant strain to his voice such as one might expect. Truth to tell, he felt only indignation and disgust because of the fact that any fellow who had the home training Lef Seller enjoyed should descend so low as to endeavor to ruin a companion’s reputation. “Then soak him, pard! Show the measly skunk no mercy! He ought to be kicked out of Columbia, and that’s the truth!” gritted the other. Lanky knew his chum’s tenderness of heart, and was afraid that Frank might be too easy with the culprit. “Don’t forget what you promised me when I let you in on this!” “Oh! yes, you tied my hands good and hard, so that I couldn’t let out even one measly little squawk. But my word is as good as my bond. Have it your own way, but I certainly hope you’ll finish that fellow’s loping so that he’ll never try any more of his funny business on you again,” grumbled Lanky. “That would be almost too good,” laughed Frank; “and now, while I go in the lunch room will you manage to tell Lef that some one wants to see him there?”