It is in the examination of such a period that we feel sensibly the want of careful contemporary history, and learn to value those narratives which present us the living picture of an age, even though they are sometimes tainted with the intolerance of religious sectarianism and bigotry, or by the merciless rancor of party malice. They give us, at least, certain material facts, which are independent of the spirit or context of the story. Posterity, which is now eager for details, infinitely prefers a sketch like this, warm and breathing with the vitality of the beings in whose presence and from whose persons it is drawn, to the cold mosaics, made up by skilful artizans, from the disjointed chips which they are forced to discover, harmonize, and polish, amid the discordant materials left by a hundred writers. Such labors, when undertaken by patient men, may sometimes reanimate the past and bring back its scenes, systems and people, with wonderful freshness; yet, after all, they are but mere restorations, and often depend essentially on the vivid imagination which supplies the missing fragments and fills them, for a moment, with an electrical instead of a natural life. After a careful review of nearly all the historians and writers upon the ancient history of Mexico, we have never encountered a satisfactory view of the Aztec empire, except in the history of the conquest, by our countryman Prescott. His chapters upon the Mexican civilization, are the best specimens in our literature, since the days of Gibbon, of that laborious, truthful, antiquarian temper, which should always characterize a historian who ventures upon the difficult task of portraying the distant past. * * * * * In our rapid sketch of the conquest, we have been compelled to present, occasionally, a few descriptive glimpses of the Aztec architecture, manners, customs and institutions, which have already acquainted the reader with some of the leading features of national character. But it will not be improper, in a work like this, to combine in a separate chapter such views of the whole structure of Mexican society, under the original empire, as may not only afford an idea of the advancement of the nation which Cortéz conquered, but, perhaps, will present the student with some national characteristics of a race that still inhabits Mexico jointly with the Spanish emigrants, and which is the lawful descendant of the wandering tribes who founded the city of Tenochtitlan. * * * * *