traditions, he was informed, that if any knight, unattended, entered an adjacent plain by moon-light, and challenged an adversary to appear, he would be immediately encountered by a spirit in the form of a knight. Osbert resolved to make the experiment, and set out, attended by a single squire, whom he ordered to remain without the limits of the plain, which was surrounded by an ancient entrenchment. On repeating the challenge, he was instantly assailed by an adversary, whom he quickly unhorsed, and seized the reins of his steed. During this operation, his ghostly opponent sprung up, and, darting his spear, like a javelin, at Osbert, wounded him in the thigh. Osbert returned in triumph with the horse, which he committed to the care of his servants. The horse was of a sable colour, as well as his whole accoutrements, and apparently of great beauty and vigour. He remained with his keeper till cock-crowing, when, with eyes flashing fire, he reared, spurned the ground, and vanished. On disarming himself, Osbert perceived that he was wounded, and that one of his steel boots was full of blood. Gervase adds, that, as long as he lived, the scar of his wound opened afresh on the anniversary of the eve on which he encountered the spirit."[A] Less fortunate was the gallant Bohemian knight, who, travelling by night, with a single companion, came in sight of a fairy host, arrayed under displayed banners. Despising the remonstrances of his friend, the knight pricked forward to break a lance with a champion who advanced from the ranks, apparently in defiance. His companion beheld the Bohemian over-thrown horse and man, by his aërial adversary; and, returning to the spot next morning, he found the mangled, corpse of the knight and steed.--_Hierarchie of Blessed Angels,_ p. 554. [Footnote A: The unfortunate Chatterton was not, probably, acquainted with Gervase of Tilbury; yet he seems to allude, in the _Battle of Hastings_, to some modification of Sir Osbert's adventure: So who they be that ouphant fairies strike, Their souls shall wander to King Offa's dike. The entrenchment, which served as lists for the combatants, is said by Gervase to have been the work of the pagan invaders of Britain. In the metrical romance of _Arthour and Merlin_, we have also an account of Wandlesbury being occupied by the Sarasins, i.e. the Saxons; for all pagans were Saracens with the romancers. I presume the place to have been Wodnesbury, in Wiltshire, situated on the remarkable mound, called Wansdike, which is obviously a Saxon work.--GOUGH'S _Cambden's Britannia,_ pp. 87--95.]