Though details of this description, however, are valuable and admissible in biography, and come with peculiar propriety and grace from a female hand, it must be observed, on the other hand, that there is a limit, and a very obvious one, to the introduction of them, and that, if not inserted with caution, they may essentially injure the popularity or utility of a work. In particular, it is seldom safe to carry to any considerable length in the text the introduction of quotations from old histories or chronicles of the period, which often are filled with them to the exclusion of all other subjects. We know that such original documents have a great charm in the eyes of antiquarians or antiquarian biographers, the more especially if they have brought them to light themselves; but such persons learned in ancient lore constitute but a small fraction of the human race. The great body of readers, at least nineteen out of twenty, care nothing at all for such original authorities, but wish to see their import condensed into a flowing easy narrative in the author's own words. For this reason it is generally safest to give such original documents or quotations in notes or an appendix, and to confine quotations in the text to characteristic expressions, or original words spoken on very important occasions. Barante and Sismondi in France, Tytler in Scotland, and Lingard in England, have essentially injured the general popularity of their great and learned works, by not attending to this rule. The two Thierrys have chiefly won theirs by attending to it. The great popularity and widely extended sale of Miss Strickland's _Queens of England_, almost equalling, we believe, that of any living author in this country, and much exceeding that of any prior writer, whether of her own or the other sex, in the same period in biography, is a proof both of the intrinsic excellence of that work, and the thirst which exists in the public mind for works of that description. We have long been of opinion that the narrative of human events might be rendered as popular in the outset, and far more and durably interesting in the end, than any works of fiction; and that the only reason why this has so seldom taken place, was because historical works were in general constructed on wrong principles. The great success which has recently attended historical composition in this country, especially in the case of Mr Macaulay's History and Miss Strickland's Lives, is a proof that this view of the subject is well founded. And of the two, biography, when supported by learning, and handled by genius such as both these learned writers possess, is much more likely to be generally popular than extended history, because it partakes more of the character of Romance, and possesses in a higher degree that _unity_ of interest which is the most essential element in all arts which aim at pleasing or fascinating mankind.