rain so thick, he could hardly tell them apart.... 

With the first flash of lightning came the sound of Madam Hooch's whistle; Harry could just see the outline of Wood through the thick rain, gesturing him to the ground. The whole team splashed down into the mud. 

"I called for time-out!" Wood roared at his team. "Come on, under here --" 

They huddled at the edge of the field under a large umbrella; Harry took off his glasses and wiped them hurriedly on his robes. 

"What's the score?" 

"We're fifty points up," said Wood, "but unless we get the Snitch soon, we'll be playing into the night." 

"I've got no chance with these on," Harry said exasperatedly, waving his glasses. 

At that very moment, Hermione appeared at his shoulder; she was holding her cloak over her head and was, inexplicably, beaming. 

"I've had an idea, Harry! Give me your glasses, quick!" He handed them to her, and as the team watched in amazement, Hermione tapped them with her wand and said, "Impervius!"

 "There!" she said, handing them back to Harry. "They'll repel water!" 

Wood looked as though he could have kissed her. "Brilliant!" he called hoarsely after her as she disappeared into the crowd. "Okay, team, let's go for it!" 

Hermione's spell had done the trick. Harry was still numb with cold, still wetter than he'd ever been in his life, but he could see. Full of fresh determination, he urged his broom through the turbulent air, staring in every direction for the Snitch, avoiding a Bludger, ducking