“The Duergar are described as being of low stature, with short legs and long arms, reaching almost down to the ground when they stand erect. They are skilful and expert workmen in gold, silver, iron, and other metals. They form many wonderful and extraordinary things for the Æser, and for mortal heroes, and the arms and armour that come from their forges are not to be paralleled. Yet the gift must be spontaneously bestowed, for misfortune attends those extorted from them by violence.”[34] Two narratives of undoubted antiquity will illustrate the cunning of these subterraneous workmen. They are, however, somewhat out of place, since they would better suit the following section. The first is from the Edda:— “Loke, the son of Laufeiar, had out of mischief cut off all the hair of Sif. When Thor found this out, he seized Loke, and would have broken every bone in his body, only that he swore to get the Suartalfar to make for Sif hair of gold, which would grow like any other hair. “Loke then went to the Dwarfs that are called the sons of Ivalldr. They first made the hair, which as soon as it was put on the head grew like natural hair; then the ship Skidbladnor[35], which always had the wind with it, wherever it would sail; and, thirdly, the spear Gugner, which always hit in battle. “Then Loke laid his head against the Dwarf Brock, that his brother Eitri could not forge three such valuable things as these were. They went to the forge; Eitri set the swine-skin (bellows) to the fire, and bid his brother Brock to blow, and not to quit the fire till he should have taken out the things he had put into it. “And when he was gone out of the forge, and that Brock was blowing, there came a fly and settled upon his hand, and bit him; but he blew without stopping till the smith took the work out of the fire; and it was a boar, and its bristles were of gold. “He then put gold into the fire, and bid him not to stop blowing till he came back. He went away, and then the fly came and settled on his neck, and bit him more severely than before; but he blew on till the smith came back and took out of the fire the gold ring which is called Drupner. “Then he put iron into the fire, and bid him blow, and said that if he stopped blowing all the work would be lost. The fly now settled between his eyes, and bit so hard that the blood ran into his eyes, so that he could not see; so when the bellows were down he caught at the fly in all haste, and tore off its wings; but then came the smith, and said that all that was in the fire had nearly been spoiled. He then took out of the fire the hammer Miölner, and gave all the things to his brother Brock, and bade him go with them to Asgard and settle the wager.