Northern mythologists thus explain this very ancient fable. Sif is the earth, and the wife of Thor, the heaven or atmosphere; her hair is the trees, bushes, and plants, that adorn the surface of the earth. Loki is the Fire-God, that delights in mischief, _bene servit_, _male imperat_. When by immoderate heat he has burned off the hair of Sif, her husband compels him so by temperate heat to warm the moisture of the earth, that its former products may spring up more beautiful than ever. The boar is given to Freyr, to whom and his sister Freya, as the gods of animal and vegetable fecundity, the northern people offered that animal, as the Italian people did, to the earth. Loki's bringing the gifts from the under-ground people seems to indicate a belief that metals were prepared by subterranean fire, and perhaps the forging of Thor's hammer, the mythic emblem of thunder, by a terrestrial demon, on a subterranean anvil, may suggest that the natural cause of thunder is to be sought in the earth. _Thorston and the Dwarf._ When spring came, Thorston made ready his ship, and put twenty-four men on board of her. When they came to Vinland, they ran her into a harbour, and every day he went on shore to amuse himself. He came one day to an open part of the wood, where he saw a great rock, and out a little way from it a Dwarf, who was horridly ugly, and was looking up over his head with his mouth wide open; and it appeared to Thorston that it ran from ear to ear, and that the lower jaw came down to his knees. Thorston asked him, why he was acting so foolishly. "Do not be surprised, my good lad," replied the Dwarf; "do you not see that great dragon that is flying up there? He has taken off my son, and I believe that it is Odin himself that has sent the monster to do it. But I shall burst and die if I lose my son." Then Thorston shot at the dragon, and hit him under one of the wings, so that he fell dead to the earth; but Thorston caught the Dwarf's child in the air, and brought him to his father. The Dwarf was exceeding glad, and was more rejoiced than any one could tell; and he said, "A great benefit have I to reward you for, who are the deliverer of my son; and now choose your recompense in gold and silver." "Cure your son," said Thorston, "but I am not used to take rewards for my services." "It were not becoming," said the Dwarf, "if I did not reward you; and let not my shirt of sheeps'-wool, which I will give you, appear a contemptible gift, for you will never be tired when swimming, or get a wound, if you wear it next your skin."