There was a door on leather hinges; it drooped, perhaps, but it was a door. There was a window--not a glass one, but, at least, it could be “looked out of”, as Sam said. There was a chimney made of stovepipe, though that was merely decorative, because the cooking was done out of doors in an underground “furnace” that the boys excavated. There were pictures pasted on the interior walls, and, hanging from a nail, there was a crayon portrait of Sam's grandfather, which he had brought down from the attic quietly, though, as he said, it “wasn't any use on earth up there.” There were two lame chairs from Penrod's attic and along one wall ran a low and feeble structure intended to serve as a bench or divan. This would come in handy, Sam said, if any of the party “had to lay down or anything”, and at a pinch (such as a meeting of the association) it would serve to seat all the members in a row. For, coincidentally with the development of the shack, the builders became something more than partners. Later, no one could remember who first suggested the founding of a secret order, or society, as a measure of exclusiveness and to keep the shack sacred to members only; but it was an idea that presently began to be more absorbing and satisfactory than even the shack itself. The outward manifestations of it might have been observed in the increased solemnity and preoccupation of the Caucasian members and in a few ceremonial observances exposed to the public eye. As an instance of these latter, Mrs. Williams, happening to glance from a rearward window, about four o'clock one afternoon, found her attention arrested by what seemed to be a flag-raising before the door of the shack. Sam and Herman and Verman stood in attitudes of rigid attention, shoulder to shoulder, while Penrod Schofield, facing them, was apparently delivering some sort of exhortation, which he read from a scribbled sheet of foolscap. Concluding this, he lifted from the ground a long and somewhat warped clothes-prop, from one end of which hung a whitish flag, or pennon, bearing an inscription. Sam and Herman and Verman lifted their right hands, while Penrod placed the other end of the clothes-prop in a hole in the ground, with the pennon fluttering high above the shack. He then raised his own right hand, and the four boys repeated something in concert. It was inaudible to Mrs. Williams; but she was able to make out the inscription upon the pennon. It consisted of the peculiar phrase “In-Or-In” done in black paint upon a muslin ground, and consequently seeming to be in need of a blotter. It recurred to her mind, later that evening, when she happened to find herself alone with Sam in the library, and, in merest idle curiosity, she asked: “Sam, what does 'In-Or-In' mean?” Sam, bending over an arithmetic, uncreased his brow till it became of a blank and marble smoothness. “Ma'am?” “What are those words on your flag?”