PROLOGUE VIVE L'EMPEREUR The weatherworn Château d'Aumenier stands in the midst of a noble park of trees forming part of an extensive domain not far to the northwest of the little town of Sézanne, in the once famous county of Champagne, in France. The principal room of the castle is a great hall in the oldest part of the venerable pile which dates back for eight hundred years, or to the tenth century and the times of the famous Count Eudes himself, for whom it was held by one of his greatest vassals. The vast apartment is filled with rare and interesting mementos of its distinguished owners, including spoils of war and trophies of the chase, acquired in one way or another in the long course of their history, and bespeaking the courage, the power, the ruthlessness, and, sometimes, the unscrupulousness of the hard-hearted, heavy-handed line. Every country in Europe and every age, apparently, has been levied upon to adorn this great hall, with its long mullioned windows, its enormous fireplace, its huge carved stone mantel, its dark oak paneled walls and beamed ceiling. But, the most interesting, the most precious of all the wonderful things therein has a place of honor to itself at the end farthest from the main entrance. Fixed against this wall is a broken staff, or pole, surmounted by a small metallic figure. The staff is fastened to the wall by clamps of tempered steel which are further secured by delicate locks of skillful and intricate workmanship. The pole is topped by the gilded effigy of an eagle. In dimensions the eagle is eight inches high, from head to feet, and nine and a half inches wide, from wing tip to wing tip. Heraldically, "Un Aigle Éployé" it would be called. That is, an eagle in the act of taking flight—in the vernacular, a "spread eagle." The eagle looks to the left, with its wings half expanded. In its talons it grasps a thunderbolt, as in the old Roman standard. Those who have ever wandered into the Monastery of the Certosa, at Milan, have seen just such an eagle on one of the tombs of the great Visconti family. For, in truth, this emblem has been modeled after that one. Below the thunderbolt is a tablet of brass, three inches square, on which is a raised number. In this instance, the number is five. The copper of which the eagle is molded was originally gilded, but in its present battered condition much of the gilt has been worn off, or shot off, and the original material is