"Never mind," said Miss Peters, who had got all she wanted,--a chance to fine Bertie whom she hated,--"attend to your work," and she passed on, never noticing the hand which Katie, having hastily thrust it into her pocket, continued to hold there. The work proceeded in silence, and, as Katie went home at four o'clock as usual, Bertie did not have an opportunity to speak to her about the strange thing she had noticed. She did, however, say to Gretchen, as they separated: "Did you see that?" "What?" said the German, innocently. "Oh! nothing, if you did not see it." Bertie was going to tell her companion what she had seen, but on second thoughts decided to keep her discovery to herself, that she might have more power over the "saint," whom she was beginning to absolutely hate. But Gretchen had seen exactly what Bertie had, only she did not think it her business, and as it was not, did not choose to speak about it, but, German fashion, went about her own business. What had the two girls seen? What was it that made Katie Robertson's face such a study as she walked home at a much slower pace than was her wont? What was it that lay in the depth of her pocket, where her hand rested for greater security. What did she put away in the drawer that contained her treasures, going directly to her room for the purpose, instead of rushing first of all to the sitting-room to see if her mother were at home. Only a crisp fifty-dollar bill! Katie had never seen so much money at once before. How beautiful it looked; how much it represented of comfort and luxury; how many things it would buy that she knew were wanted by her mother and the boys! She deposited her treasure carefully at the bottom of a little pearl box which had been her mother's, and was the only really pretty thing which she possessed, and then went downstairs to lie on the sofa, think about and plan for spending it.