crinolines, whose picture hung on the wall of a narrow spiral staircase.

Puffing loudly, Harry, Ron, Hermione, and Amelia climbed the tightly spiraling steps, getting dizzier and dizzier, until at last they heard the murmur of voices above them and knew they had reached the classroom.

"Farewell!" cried the knight, popping his head into a painting of some sinister-looking monks. "Farewell, my comrades-in-arms! If ever you have need of noble heart and steely sinew, call upon Sir Cadogan!"

"We shall! A good day to you, Sir Cadogan," Amelia bowed, her hair falling in front of her face. She had always liked entertaining the paintings.

"Yeah, we'll call you," muttered Ron as the knight disappeared, "if we ever need someone mental."

They climbed the last few steps and emerged onto a tiny landing, where most of the class was already assembled. There were no doors off this landing, but Ron nudged Harry and pointed at the ceiling, where there was a circular trapdoor with a brass plaque on it.

"'Sibyll Trelawney, Divination teacher,"' Harry read. "How're we supposed to get up there?"

As though in answer to his question, the trapdoor suddenly opened, and a silvery ladder descended right at Harry's feet. Everyone got quiet.

"After you," said Ron, grinning, so Harry climbed the ladder first.

He emerged into the strangest-looking classroom he had ever seen. In fact, it didn't look like a classroom at all, more like a cross between someone's attic and an old-fashioned tea shop. At leasttwenty small, circular tables were crammed inside it, all surrounded by chintz armchairs and fat little poufs. Everything was lit with a dim, crimson light; the curtains at the windows were all closed, and the many lamps were draped with dark red scarves. it was stiflingly warm, and the fire that was burning under the crowded mantelpiece was giving off a heavy, sickly sort of perfume as it heated a large copper kettle. The shelves running around the circular walls were crammed with dusty-looking feathers, stubs of candles, many packs of tattered playing cards, countless silvery crystal balls, and a huge array of teacups.

Ron appeared at Harry's shoulder as the class assembled around them, all