"I wish I had a twin sister," said Patty; "no, that wouldn't do, either. I wish I were twins, and could be both of them myself." "What a sensible wish!" commented Nan. "But why do you want to double yourself up in that way?" "So I could go to two places at once. Here I have two lovely invitations for this afternoon, and I don't know which I want to accept most. One is a musicale at Mrs. Hastings', and the other is a picture exhibition at the New Gallery." "They sound delightful. Can't you manage to go to both?" "No, they're too far apart; and they're both at four o'clock, anyway. I think I'll choose the musicale, for I'll surely get another chance to see the pictures." "Yes, of course you will," agreed Nan, a little absently, for she was reading some newly arrived letters. The Fairfields were in London, and were comfortably established in the Savoy Hotel. It was April, and though they intended to travel later in the summer, their plans were as yet indefinite, and they were enjoying the many and varied delights of the London season. To be sure, Nan and Mr. Fairfield were invited to many dinners and elaborate entertainments which Patty was too young to attend, but her time was pleasantly filled with afternoon garden parties or teas, while mornings were often devoted to sight-seeing. Patty was almost eighteen, and though not allowed quite the untrammelled freedom she would have had in America, she was not kept so utterly secluded as English girls of her age. Sometimes she would go all alone to Westminster Abbey or to the National Gallery, and enjoy hugely a solitary hour or two. At other times, Nan or her father, or some girl friend, would go with her. The Fairfields had begun their stay in London with only a few friends, but these had introduced others, until now their circle of acquaintances was large, and the immediate result of this was a sheaf of invitations in every mail. For, during the season, Londoners are hospitable folk, and give entertainments morning, noon, and night. At first, the Fairfields had thought they would take a house, and so have a home of their own. But Mr. Fairfield concluded that if Nan had the duties of a housekeeper, her trip would not be a holiday, so he declared they would live at a large hotel, and thus have a chance to observe the gay life of London.