Dolly was in a subdued and repentant mood just then, for she had been so unlucky as to offend Colin the day before, and he had not yet forgiven her. It had happened in this way. It had been a half-holiday, and Colin had brought home an especial friend of his to spend the afternoon, to be shown his treasures and, in particular, to give his opinion as an expert on the merits of Colin's collection of foreign postage-stamps. Unhappily for Colin's purpose, however, Dolly had completely enslaved the friend from the outset. Charmed by his sudden interest in the most unboyish topics, she had carried him off to see her doll's house, and, in spite of Colin's grumbling dissuasion, the base friend had gone meekly. Worse still, he had remained up there listening to Dolly's personal anecdotes and reminiscences and seeing Frisk put through his performances, until it was too late to do anything like justice to the stamp album, over which Colin had been sulkily fuming below, divided between hospitality and impatience. Dolly had been perfectly guiltless of the least touch of coquetry in thus monopolising the visitor, for she was not precocious in this respect, and was merely delighted to find a boy who, unlike Colin, would condescend to sympathise with her pursuits; but perhaps the boy himself, a susceptible youth, found Dolly's animated face and eager confidences more attractive than the rarest postal issues. When he had gone, Colin's pent-up indignation burst out on the unsuspecting Dolly. She had done it on purpose. She knew Dickinson major came to see his stamps. What did _he_ care about her rubbishy dolls? And there she had kept him up in the nursery for hours wasting his time! It was too bad of her, and so on, until she wept with grief and penitence. And now she was seizing the opportunity of purchasing his forgiveness by an act of atonement in kind, in securing what seemed to her to be probably a stamp of some unknown value--to a boy. But she did not tell all this to Caffyn. 'Do you know about stamps--is this a rare one?' she said, and brought the stamp she had removed to Caffyn. The postmark had obliterated the name upon it. 'Let's look at the letter,' said Caffyn; and Dolly put it in his hand. He took it to the window, and gave a slight start. 'When did this come?' he said sharply. 'Just now,' said Dolly; 'a minute or two before you came. I heard the postman, and I ran out into the hall to see the letters drop in the box, and then I saw this one with the stamp, and the box wasn't locked, so I took it out and tore the stamp off. Why do you look like that, Harold? It's only for Mabel, and she won't mind.' Caffyn was still at the window; he had just received a highly unpleasant shock, and was trying to get over it and adjust himself to the facts revealed by what he held in his hand.