The sight of his handkerchief gave him a sudden inspiration. Quickly tearing it in half, he scrawled on one part of it, in large letters, “HELP! QUICK!” Knotting one end of the ball of twine to it, he painstakingly worked the bit of linen between the slats of the window which faced the observatory, and played out the cord as far as it would go. Fastening the end of it securely to one of the shutters, he took the other half of the handkerchief, slipped it through between the slats, and tied it about in the center of the window.

“Now I’ve done all I can,” he muttered. “It’s on the laps of the gods, for better or worse.”

The part of the campus on which the chapel stood was deserted during the week. In a rather out-of-the-way place, beyond the other buildings, it was in the least frequented corner of the campus. Jack’s captors planned all too well when they chose the belfry for his prison.

One, two, one, two, chimed the library clock. A quarter to five! Would nobody find his message or see his poor little flag? If he could only have stood up and tramped around a bit, it would have relieved Jack’s feelings somewhat; but the belfry was large enough only for the moving of the single bell. Would he be safer flat on the floor, directly under the bell, or as far to one side as he could get, when it began to swing?

One, two, three, four, chimed the clock. A door slammed somewhere downstairs; the bell rope trembled; the bell quivered; Jack stretched out on the floor as flat as he could, and waited for the first blow of the iron mass.

Swift steps on the stairs, the turning of a key, hands dragging him quickly out of the way, just as the first clang of the big bell sounded deafeningly through the little room. Jack found himself in the hall with Pat and Ted bending over him.

“Just in the nick of time, old man!” cried Ted, grinning cheerfully.

“Don’t stop to talk!” ordered Patricia frantically. “Let’s get out of here right away!”

Down the stairs they rushed, while the bell clanged and clanged overhead. Pat’s car, with all shades drawn, was waiting close to the doorway.

“Get in back,” directed Ted; “crawl behind those cartons and don’t breathe.”