The sharp, angular form of the runes proves that they were incised on wood, stone, or some such rigid material, and these characters persist in the few manuscripts which have been found. The primitive Gothic alphabet is named, on the acrologic principle, "futhorc," after the first six letters, _f_, _u_, _th_, _o_, _r_, _c_. It was divided into three parts or "aetts," named after the first letter of each "aett" or family--"Frey's aett," "Hagl's aett," and "Tyr's aett"--as shown in the following illustration from an article on Runes by Miss Gertrude Rawlings (_Knowledge_, 1st October, 1896). [Illustration: RUNE ALPHABET] The Scandinavian, Anglian, and Manx runes are local variants of this oldest form. Runic inscriptions--monumental and sepulchral--have a wide, although exclusive, range. They are found in the valley of the Danube, but not in Germany; in America, but not in Ireland; in the Isle of Man, but not in Wales--thus evidencing their restriction within Scandinavian lines of migration. The oldest was found at Sandwich, in Kent; but an especially interesting example is the well-known Ruthwell Cross in Dumfriesshire, on which is inscribed a poem, "The Dream of the Holy Rood," ascribed to Cædmon, the herdsman poet of the seventh century. The early voyage of the Vikings to Vineland, as they named America, has illustration in a Runic epitaph cut in a rock on the Potomac. "Here lies Syasi, the fair one of Western Iceland, the widow of Koldr, sister of Thorgr, by her father, aged twenty-five years. God be merciful to her." The old alphabet was displaced by the Latin on the conversion of the peoples of Northern Europe to Christianity, but not before Ulphilas, the Bishop of the Goths, had woven some of its characters into the compound script which was the vehicle of his memorable translation of the Gospels, the lovely manuscript of which, in gold and silver letters on purple vellum, is worth a visit to the University of Upsala to see.