A detailed narrative of events so interesting as those which preceded and attended the conquest of England by William, duke of Normandy, needs little apology for its introduction, for the first time, to the english reader. If his feelings are at all in unison with those of the translator, he will welcome the easy access thus afforded to this remarkable chronicle;--by far the most minute, graphic, and animated account of the transactions in question, written by one who lived among the immediate children of the principal actors. The historian will find some value in such a memorial of this great epoch in english affairs;--the genealogist will meet in it some interesting materials applicable to his peculiar pursuits;--and the general reader will hardly fail to take a lively interest in such an illustration of the history of the singular men, who emerged in so short a time from the condition of roving barbarians into that of the conquerors, en noblers, and munificent adorners of every land in which they settled, and to whom the proudest families of succeeding ages have been eager to trace the honours of their pedigree. MASTER WACE, the author of the ROMAN DE ROU and chronicle of the dukes of Normandy, from which the ensuing pages are extracted, tells concerning himself, in his prologue, all that is known with any degree of certainty. His name, with several variations of orthography, is not an unusual one in early norman history, though he has not claimed an identification with any known family distinguished by it. The name of Robert, which has been usually assigned to him as an addition, has no sufficient warranty. It certainly occurs in connection with that of Wace in the charters of the abbey of Plessis-Grimoult; (see the Mémoires des antiquaires de Norm, viii.); but Richard Wace, a priest whose name occurs in the chartulary of the abbey of St. Sauveur le Vicomte, has been speculated upon by the Abbé de la Rue as having a more probable claim of identification. In speaking of the numbers which composed William's invading fleet, Wace says, --jo oï dire a mon pere, Bien m'en sovint, mais varlet ere;