manner. What could it be? When she walked over to the postoffice the girl found the long-looked-for letter from Josie O'Gorman. It said: Dear Mary Louise: How good you are! I positively need a change of scene and a rest, so I'm coming. To-morrow—by the train to Chargrove. The mystery you hint at will help me to rest. Dad doesn't want me to grow rusty and he has some odd theories I'd like to work out. I haven't an idea what your "mystery" is, of course, but if it enables me to test any one of the O'Gorman theories (a theory is merely a stepping-stone to positive information) I shall bless you forever. And that reminds me: I'm coming as a sewing girl, to help you fix over some summer gowns. You're anxious to give me the work, because I need it, but as we're rather chummy I'm half servant and half companion. (I hate sewing and make the longest stitches you ever saw!) Moreover, I'm Josie Jessup. I'm never an O'Gorman while I'm working on a mystery; it wouldn't do at all. Explain this to dear old Gran'pa Jim. Between the receipt of this script and to-morrow's train jot down in regular order everything you know concerning the aforesaid mystery. Make it brief; no speculations or suspicions, just facts. Then I won't waste any time getting busy. Can you hear the rumble of my train? While you're reading this I'm on my way! Josie "Good!" murmured Mary Louise, as she folded the letter. "I feel better already. Whatever the mystery of Old Swallowtail may be, Josie is sure to solve it." CHAPTER VIII THE RED-HEADED GIRL Sol Jerrems the storekeeper, coming in from the back room where he had been drawing molasses for Farmer Higgins, found perched on top the sugar-barrel a chunky, red-haired, freckle-faced young girl whom he had never seen before. She seemed perfectly at home in his store and sat with her knees drawn up to her chin and her arms encircling her legs, eyeing soberly the two or three farmers who had come to the Crossing to "trade." "If the head o' thet bar'l busts in, you'll be a fine mess," remarked Sol. The girl nodded but