Mary waited until it was quiet again. "If you've quite finished guessing," she said, "I'll tell you. You remember the evening when I found four of you in Rachel and Katherine's room writing deceitful letters to your fond parents. Well, I had been racking my brains for weeks for a pleasing and original theme subject. You know you are supposed to spend two hours a week on this theme course, and I had spent two hours for four weeks in just thinking what to write. I'm not sure whether that counts at all and I didn't like to ask--it would have been so conspicuous. So I was in despair when I chanced upon your happy gathering and was saved. Miss Raymond read it in class to-day," concluded Mary triumphantly.