She vanished through a dimly-lighted rotunda, leaving his grace gazing eagerly after her. Crouching upon her knees by her chamber window, in the cold stream of moonlight, with clasping hands and yearning eyes, Margaret Walsingham questioned the silent heavens through the long hours for the meaning of the vision. And yet the man had been her enemy! CHAPTER IX. A WOMAN'S VENGEANCE. Through the dark fens, and the yielding morass, and the spicy sycamore grove, and the mossy walnut woods of Virginia, stole a gray-faced man; panting, hunger-smitten, weary; starting at every crash of the rotten underbrush, stopping ever with dilating eye to peer from the top of every hill into the valley beneath. And a thin, tawny shadow glided before him with his nose upon the ground, and his eyes flaming ferociously--a blood-hound upon the trail. Thoms had deserted from the army, and was out in search of Colonel Brand, and this dog which he held in chains was guiding him foot by foot along the secret path which St. Udo had traversed to perform his embassy. How the old man brightened when a blue curl of distant smoke promised him a speedy sight of St. Udo's watch-fire! How his limbs trembled and his haggard face blackened when the blood-hound wavered in his steady run, and sniffed about uneasily for a lost scent! How the wicked, tigerish eyes gleamed when the creature ran on again with eager haste and dripping fangs! And the long brown fingers were ever straying toward the dagger in the bosom; and the cruel lips ever were sneering out their fell design; and the march seemed only a summer holiday to Thoms hastening to his colonel. St. Udo Brand had been sent to Washington with dispatches, and was on his way South again to join his command. Thus much had Thoms discovered, and he was sure of coming up with him in these pathless forests, if he trusted to the unerring instinct of his hideous guide. It was a lovely day that first of September--so warm, and lambent, and sunny-hued that St. Udo, weary with nights and days of ceaseless exertion, ordered a halt in a cedar grove, and threw himself from his jaded horse to rest a while. His twenty followers, who were struggling after him on foot, were overjoyed to throw themselves beside him, and soon most of the poor fellows were fast asleep on their arms. The following day there was a slight skirmish, in which but one, a mere youth, was injured. St. Udo was talking kindly to this youth, who lay quite still in a corner listening to the whispered words of cheer with a faint and hopeless smile, when a shadow fell across the sweet, dying face, and a woman's gasp of terror fell upon St. Udo's ear. He turned to look upon her, and started involuntarily. There she drooped, with wild, grief-darkened eyes fastened on the boy, her fair cheeks white with horror, her shapely hands clasped in anguish; her snaky tresses lying low upon her sloping shoulders--a vision of surpassing grace and dumb sorrow--Madam Estvan.