The moment she was safely out of the way the invalid sprang up and resumed her interrupted toilet. Diana had suffered from nettle-rash several times before, and the treatment had not included stopping in bed or even staying indoors. Her complaint was really more in the nature of dyspepsia. She felt as if fresh air would do her good. She did not dare to walk downstairs in case she might meet anybody, so she decided to adopt the method she had found effective last autumn, and climb out through the window and down the ivy. Lessons were in progress, so nobody would be in the garden to watch her, except Miss Carr and Miss Ormrod, who would probably be engaged with the horse or the hens. She swung herself out, therefore, and let herself down by the thick stems. Then she dodged round the house to the bicycle-shed. She did not yet possess a machine of her own, but Wendy's stood handy, and she knew her chum well enough to borrow it. She wheeled it through the back gate, fortunately without meeting Miss Carr, and then set off at top-speed for Petteridge Court.