conversation closed, was now doing. They sat together by the lamplight in the cozy sitting room. But her thoughts constantly reverted to "Old Swallowtail" and to Ingua. At length she laid down her book and said: "Gran'pa, would you mind if I invited Josie O'Gorman to come here and make me a visit?" He gave her a curious look, which, soon melted into an amused smile. "Not at all, my dear. I like Josie. But I can see by your desire to introduce a female detective on the scene that you cannot abandon your suspicion of Mr. Cragg." "I want to save Ingua, if I can," replied the girl earnestly. "The poor little thing can't go on leading such a life without its ruining all her future, even if her grandfather's brutal threats are mere bluff. And Josie isn't a female detective, as yet; she is only training to be one, because her father has won fame in that profession." "Josie O'Gorman," said the Colonel, meditatively, "is a wonderfully clever girl. I believe she is better, even now, than a score of average male sleuths. Perhaps it will be a desirable thing for her to come here, for she will be shrewd enough to decide, in a short time, whether or not your suspicions are justified. In the latter case, you will be relieved of your worries. Will you abide by Josie's decision?" "Will you, Gran'pa Jim?" "I have considerable confidence in the girl's judgment." "Then I will write to her at once." She went to her desk and wrote the following note: Dear Josie: We are at the dropping-off-place of the world, a stagnant little village of a dozen houses set in an oasis that is surrounded by the desert of civilization. And here, where life scarcely throbs, I've scented a mystery that has powerfully impressed me and surely needs untangling. It will be good practice for you, Josie, and so I want you to pack up at once and come to us on a good long visit. We're delightfully situated and, even if the mystery dissolves into thin air under the sunshine of your eyes, I know you will enjoy the change and our dreamy, happy existence in the wilds of nowhere. Gran'pa Jim wants you, too, as he