"Oh," Theo thought for a moment. He had to actually learn some spells. Could he not just think them? "Ok the real spells. Do you mean that one?" he said, pointing to scourgify on the open page. He turned around to see that Kazi had gone. Great he had been left again by the old man. Couldn't he just stay and watch. Theo could just run and leave. Especially with the old man gone.

He pulled out his wand and pointed it at the stuff. "Scourgify," he uttered at it. Nothing happened. He pictured the stuff clearing away and uttered it again. This time it disappeared.