Members of the same family of nations established by the shores of the North Sea, as the classic nations were on the Mediterranean coasts in the time of the emperors, the Anglo-Saxon, the German, and the Scandinavian tribes spoke dialects of the same tongue, preserved common traditions and the memory of an identical origin. Grein has collected in his "Anglo-Saxon Library" all that remains of the ancient literature of England; Powell and Vigfusson have comprised in their "Corpus Poeticum Boreale" all we possess in the way of poems in the Scandinavian tongue, formerly composed in Denmark, Norway, the Orkneys, Iceland, and even Greenland, within the Arctic circle.[43] The resemblances between the two collections are striking, the differences are few. In both series it seems as if the same people were revealing its origins, and leading its heroes to Walhalla.[44] The Anglo-Saxon tale of Beowulf and the Scandinavian saga of Gretti, the Anglo-Saxon story of Waldhere and the Scandinavian and Germanic tale of the Niblungs and Volsungs,[45] turn on the same incidents or are dedicated to the same heroes, represent a similar ideal of life, similar manners, the same race. They are all of them part of the literary patrimony common to the men of the North. As happened with the Celts, the greater number of the monuments of ancient Germanic and Scandinavian literature has been preserved in the remotest of the countries where the race established itself; distance having better sheltered it from wars, the songs and manuscripts were more easily saved from destruction. Most of the Celtic tales extant at this day have been preserved in Ireland; and most of the pieces collected in the "Corpus Poeticum Boreale" have been taken from Icelandic documents. Manners and beliefs of the northern people are abundantly illustrated by the poems included in this collection. We find ourselves amid giants and dwarfs, monsters, dragons, unconquerable heroes, bloody battles, gloomy omens, magic spells, and enchanted treasures. The poet leads us through halls with ornamented seats, on which warriors spend long hours in drinking; to pits full of serpents into which the vanquished are thrown; in the midst of dismal landscapes where gibbeted corpses swing in the wind; to mysterious islands where whirlwinds of flame shoot from the tombs, and where the heroine arrives on her ships, her "ocean steeds," to evoke the paternal shade, behold once more the beloved being in the midst of infernal fires, and receive from his hands the enchanted and avenging sword. Armed Valkyrias cross the sky; ravens comment on the actions of men; the tone is sad and doleful, sometimes so curt and abrupt that, in order to follow the poet's fantastic imaginations, a marginal commentary would be necessary, as for the "Ancient Mariner" of Coleridge, in whom lives again something of the spirit of this literature.