Betty had done her part all day, and in addition had taken Rachel's place earlier in the afternoon, to give her a free hour for tutoring. She was tired now and hot, and she had undoubtedly eaten too many ices; but she was also trying an experiment. Where she stood she could watch both platforms from which the girls were descending. Her quick glance shot from one to the other, scanning each figure as it emerged from the shadowy car and stopped for an instant, hesitating, on the platform. The train was nearly emptied of its Harding contingent when all at once Betty gave a little cry and darted forward to meet a girl who was making an unusually careful and prolonged inspection of the crowd below her. She was a slender, pretty girl, with yellow hair, which curled around her face. She carried a trim little hand-bag and a well-filled bag of golf-clubs.