In horror they looked at the one who could let his hatred speak of Surtur's triumph. All would have laid hands on Loki only Odin's voice rang out. Then another appeared at the entrance of the feasting hall. It was Thor. With his hammer upon his shoulder, his gloves of iron on his hands, and his belt of prowess around him, he stood marking Loki with wrathful eyes. "Ha, Loki, betrayer," he shouted. "Thou didst plan to leave me dead in Gerriöd's house, but now thou wilt meet death by the stroke of this hammer." His hands were raised to hurl Miölnir. But the words that Odin spoke were heard. "Not in this hall may slaying be done, son Thor. Keep thy hands upon thy hammer." Then shrinking from the wrath in the eyes of Thor, Loki passed out of the feast hall. He went beyond the walls of Asgard and crossed Bifröst, the Rainbow Bridge. And he cursed Bifröst, and longed to see the day when the armies of Muspelheim would break it down in their rush against Asgard. East of Midgard there was a place more evil than any region in Jötunheim. It was Jarnvid, the Iron Wood. There dwelt witches who were the most foul of all witches. And they had a queen over them, a hag, mother of many sons who took upon themselves the shapes of wolves. Two of her sons were Skoll and Hati, who pursued Sol, the Sun, and Mani, the Moon. She had a third son, who was Managarm, the wolf who was to be filled with the life-blood of men, who was to swallow up the Moon, and stain the heavens and earth with blood. To Jarnvid, the Iron Wood, Loki made his way. And he wed one of the witches there, Angerboda, and they had children that took on dread shapes. Loki's offspring were the most terrible of the foes that were to come against the Æsir and the Vanir in the time that was called the Twilight of the Gods. [Illustration] THE VALKYRIE Against the time when the riders of Muspelheim, with the Giants and the evil powers of the Underworld, would bring on battle, Odin All-Father was preparing a host of defenders for Asgard. They were not of the Æsir nor of the Vanir; they were of the race of mortal men, heroes chosen from amongst the slain on fields of battle in Midgard. To choose the heroes, and to give victory to those whom he willed to have victory, Odin had battle-maidens that went to the fields of war. Beautiful were those battle-maidens and fearless; wise were they also, for to them Odin showed the Runes of Wisdom. Valkyries, Choosers of the Slain, they were named.