But even in spite of a few slight advantages to be gained, it seems unwise to restrict the Metrical Romance too closely. What we are accustomed to call, rather vaguely, romance is a persistent quality in narrative poetry, and is not limited to the literature of any particular age or rank of society. A cursory examination will disclose many evidences of the romantic spirit in both the Epic and the Ballad. And certainly Scott's _The Lay of the Last Minstrel_, Keats's _The Eve of St. Agnes_, Longfellow's _Evangeline_, and many other poems on similar themes must remain unclassified unless we designate them broadly as Metrical Romances. Of course, it is not essential that they should be pigeon-holed and put away with the right label affixed. However, one or two observations on the subject-matter with which works of this nature deal may assist us in avoiding embarrassing confusion. Sometimes the Metrical Romance (using the term in its broader sense) deals with authenticated incidents of history. In such cases, the narrative, founded as it is on matters of fact, is compelled to preserve substantial accuracy with regard to the events which it uses for a structure. The fancy is thus partly curbed through the necessity of not departing radically from the truth. This restraint, logically enough, does not prevent the introduction of fictitious characters or episodes; but in the strict historical poem, as in the historical novel, it does require adherence to chronology and a just representation of the period in which the action takes place. Occasionally this form approaches a poetical paraphrase, as in Rossetti's _The White Ship_. The nineteenth century was singularly prolific in works of this sort; notable among such works are Scott's _Marmion_, Tennyson's _The Revenge_, and Longfellow's _Paul Revere's Ride_. If the basis of the poem is mythological, we have a further species of the Metrical Romance. The stories clustered around the gods and goddesses of unsophisticated peoples are perennially attractive and offer a fruitful field to the poet. In the setting there is frequent opportunity for elaborate description, and there is often, as in Tennyson's _Oenone_ and William Morris's _Atalanta's Race_, ornamentation used by the author that is more than ordinarily remarkable. For such poetry the Greek and Latin writers furnish a wealth of material for imitation. Nor have the myths of other races been neglected in recent years. Matthew Arnold's _Balder Dead_ has its inspiration in the Norse _Eddas_ and has its opening scene in Valhalla where Odin, father of the gods, presides over the immortals. William Morris's _Sigurd the Volsing_ is an adaptation of the myths of the early Germans.