“I beg your pardon,” he said, as politely as he could, with his eyes still full of wonder and laughter; “I had no idea I did so well.” He turned abruptly and walked away. Thorn would have felt offended, if he hadn’t all at once been exceedingly scared. Prescott’s manner was extraordinary for one who, as a rule, took everything as it came, calmly, unquestioningly. His face and his laugh had expressed anything but ordinary satisfaction at not having failed. There was something behind that unwonted astonishment, something more than mere surprise at having received what was, after all, a mediocre mark. Thorn had mixed enough with human kind to be aware that no man living is ever very much surprised in his heart of hearts to have his humble efforts in any direction given grade C. Men like Prescott, who know but little of the subjects they are examined in, usually try to compose vague answers that may, like the oracles, be interpreted according to the mood of him who reads them. No matter how general or how few Prescott’s answers had been--Thorn stopped suddenly in the middle of the path. The explanation that had come to him took hold of him, and like a tightened rein drew him up short. Prescott had written nothing. The pages of his blue book had left the examination-room as virgin white as when they had been brought in and placed on the desk by the proctor. There was no other explanation possible, and the instructor tingled all over with the horrid sensation of being an unspeakable fool. He turned quickly to go to University Hall; he meant to have Prescott’s mark changed at once. But Prescott, at that moment, was bounding up the steps of University, two at a time. He was undoubtedly on his way to the Office to verify what Thorn had just told him. Thorn walked rapidly to his entry in Holworthy, although he had just come from there. Then, with short, nervous steps, he turned back again, left the Yard, and hurried in aimless haste up North Avenue. He had been an ass,--a bungling, awful ass,--he told himself over and over again. And that was about as coherent a meditation as Mr. Thorn was able to indulge in for some time. Once the idea of pretending that he had made a mistake did suggest itself for a moment; but that struck him as wild, impossible. It would have merely resulted in forcing the Office to regard him as stupid and careless, and, should embarrassing questions arise, he no longer had Prescott’s book with which to clear himself. More than that, it would give Prescott reason to believe him an underhand trickster. The boy now knew him to be an example of brazen partiality; there was no point in incurring even harsher criticism. Thorn tried to convince himself, as he hurried along the straight, hideous highway, that perhaps he was wrong,--that Prescott hadn’t handed in a perfectly blank book. If only he could have been sure of that, he would have risked the bland assertion that the boy had stumbled on more or less intelligent answers