She sagged against the wall, running her trembling fingers over her thin lips. "It's that tenth grade, Gary. I have them last period for general science. Bill Blake and the Schermerhorn twins got to fooling around with the electro-magnet. They rewired it somehow and added a few—well, frankly, I don't understand at all! But now when anything—metal, glass, granite—when anything is put in the magnetic field, it's changed to gold." "Transmutation of atomic structure? You know it can't be done!" "Yes, I know it. But I saw it happen." She began to laugh, but checked herself quickly. "It's a trick. I know that bunch better than you do. It's time one of us had it out with them." He strode along the hall toward the science room, Miss Gerkin following meekly behind him. "I'm sure you're right, Gary, because the rest of the class hardly showed any interest in what the boys were doing. I actually asked Marilyn if she didn't want her necklace turned to gold, and she said she was too busy to bother. Imagine that, from a high school kid!" "Busy doing what?" "Working out the application of the Law of Degravitation, she said." "The Law of Degravitation? I never heard of it." Miss Gerkin sniffed righteously. "Neither have I, and I've taught science all my life." Gary Elvin flung open the door of the science room. It was one minute before the end of the period. For a moment he looked in on a peacefully ideal classroom. Every student was at his bench working industriously. Then, row by row, they began to float upward toward the ceiling, each of them holding a tiny coil of thin wires twisted intricately around two pieces of metal and an electronic tube. The breeze from the open window gathered them languidly into a kind of huddle above the door. The bell rang as Miss Gerkin began to scream. Elvin fought to hold on to his own sanity as he tried to help her, but a degree of her hysteria transferred itself to him. His mind became a patchwork of yawning blank spaces interspersed with uncoordinated episodes of reality. He remembered hearing the bell and the rush of the class out of the room. He remembered the piercing screams of Miss Gerkin's terror echoing through the suddenly crowded halls. Beyond one of his black gulfs of no-memory, he was in the nurse's office helping to hold Miss Gerkin on the lounge while the school