"Don't excite yourself needlessly, Nora," laughed Anne. "That splendid Hibernian energy of yours is worthy of a better cause."

"How provoking!" suddenly exclaimed Grace. "I've left my library book in the gym. and it's a week overdue now. I shall simply have to go back and get it. It's only three o'clock," she added, consulting her watch. "Who will go with me?"

"Of what use is it for all of us to go," complained Nora. "We'll wait right here for you and you can hurry faster by going alone."

"All right, lazy, unsocial creatures," said Grace good-humoredly. "I'm off. Be sure you wait."

She hurried in the direction of the High School and in an incredibly short time was running down the corridor of the wing that led to the gymnasium. Remembering that she had laid her book on the window sill, Grace lost no time in securing it, and taking it under her arm waited toward the door. Suddenly the faint smell of smoke was borne to her nostrils.

She sniffed the air, then murmured, "I wonder what's burning. The smell seems to come from over there. Perhaps I'd better look around. It won't take a second."

She slowly retraced her steps, looking carefully about her. There was no smoke to be seen. She turned to go, then impelled by some mysterious influence, her eye traveled to the door of the small room at the left of the gymnasium.

With a cry of consternation she sped across the floor, flung open the door and staggered back, choked by a perfect volume of smoke that issued from within. The interior of the room was in flames.

To think was to act. Unless help arrived speedily their beloved gymnasium would soon be a thing of the past. Grace tore through the corridor like a wild girl, and darted out the door and across the campus. There was a fire alarm on the street below the High School, and toward this she directed her steps.

Pausing an instant before the box, she looked about her for something with which to break the glass. Spying a small boy strolling toward her, a baseball bat in his hand, she pounced upon him, seized the bat before he knew what had happened and smashed the glass with one blow. Giving the ring inside a vigorous pull, Grace shoved the bat into the hands of the astonished youngster and made for the nearest telephone.