Myths of the Norsemen From the Eddas and Sagas
Page: 179Thor’s wife, Sif, with her luxuriant golden hair, is, as we have already stated, an emblem of the earth, and her hair of its rich vegetation. Loki’s theft of these tresses is equivalent to Pluto’s rape of Proserpine. To recover the golden locks, Loki must visit the dwarfs (Pluto’s servants), crouching in the low passages of the underground world; so Mercury must seek Proserpine in Hades.
The gadfly which hinders Jupiter from recovering possession of Io, after Mercury has slain Argus, reappears in the Northern myth to sting Brock and to endeavour to prevent the manufacture of the magic ring Draupnir, which is merely a counterpart of Sif’s tresses, as it also represents the fruits of the earth. The fly continues to torment the dwarf during the manufacture of Frey’s golden-bristled boar, a prototype of Apollo’s golden sun chariot, and it prevents the perfect formation of the handle of Thor’s hammer. 
The magic ship Skidbladnir, also made by the dwarfs, is like the swift-sailing Argo, which was a personification of the clouds sailing overhead; and just as the former was said to be large enough to accommodate all the gods, so the latter bore all the Greek heroes off to the distant land of Colchis.
The Germans, wishing to name the days of the week after their gods, as the Romans had done, gave the name of Thor to Jove’s day, and thus made it the present Thursday.
Thor’s struggle against Hrungnir is a parallel to the fight between Hercules and Cacus or Antæus; while Groa is evidently Ceres, for she, too, mourns for her absent child Orvandil (Proserpine), and breaks out into a song of joy when she hears that it will return.
Magni, Thor’s son, who when only three hours old exhibits his marvellous strength by lifting Hrungnir’s leg off his recumbent father, also reminds us of the infant Hercules; and Thor’s voracious appetite at Thrym’s wedding feast has its parallel in Mercury’s first meal, which consisted of two whole oxen.
The marvellous necklace worn by Frigga and Freya to enhance their charms is like the cestus or girdle of Venus, which Juno borrowed to subjugate her lord, and is, like Sif’s tresses and the ring Draupnir, an emblem of luxuriant vegetation or a type of the stars which shine in the firmament.
The Northern sword-god Tyr is, of course, the Greek war-god Ares, whom he so closely resembles that his name was given to the day of the week held sacred to Ares, which is even now known as Tuesday or Tiu’s day. Like Ares, Tyr was noisy and courageous; he delighted in the din of battle, and was fearless at all times. He alone dared to brave the Fenris wolf; and the Southern proverb concerning Scylla and Charybdis has its counterpart in the Northern adage, “to get loose out of Læding and to dash out of Droma.” The Fenris wolf, also a personification of subterranean fire, is bound, like his prototypes the Titans, in Tartarus.
The similarity between the gentle, music-loving Bragi, with his harp, and Apollo or Orpheus, is very great; so is the resemblance between the magic draught Od-hroerir and the waters of Helicon, both of which were supposed to serve as inspiration to mortal as well as to immortal poets. Odin dons eagle plumes to bear away this precious mead, and Jupiter assumes a similar guise to secure his cupbearer Ganymede.
Idun, like Adonis and Proserpine, or still more like Eurydice, is also a fair personification of spring. She is borne away by the cruel ice giant Thiassi, who represents the boar which slew Adonis, the kidnapper of Proserpine, or the poisonous serpent which bit Eurydice. Idun is detained for a long time in Jötun-heim (Hades), where she forgets all her merry, playful ways, and becomes mournful and pale. She cannot return alone to Asgard, and it is only when Loki (now an emblem of the south wind) comes to bear her away in the shape of a nut or a swallow that she can effect her escape. She reminds us of Proserpine and Adonis escorted back to earth by Mercury (god of the wind), or of Eurydice lured out of Hades by the sweet sounds of Orpheus’s harp, which were also symbolical of the soughing of the winds.