"Hello " exclaimed Fenn Masterson, as he opened the front door of his home, in response to a ring, and admitted his chum, Bart Keene. "Glad to see you, Bart. Come on in." "What's the matter with you?" demanded Bart, throwing a strap full of books into a corner of the hall, as if he cared very little for the volumes. "Why weren't you at school to-day, Stumpy?"