When the Olympian deities overtook the older deities of Greece and she was born of Metis (inside Zeus who had swallowed the goddess) and "re-born" through the head of Zeus fully clothed, Athena already wore her typical garments. When the Olympian shakes the aegis, Mount Ida is wrapped in clouds, the thunder rolls and men are struck down with fear. "Aegis-bearing Zeus", as he is in the Iliad, sometimes lends the fearsome aegis to Athena. In the Iliad when Zeus sends Apollo to revive the wounded Hector, Apollo, holding the aegis, charges the Achaeans, pushing them back to their ships drawn up on the shore. According to Edith Hamilton's Mythology: Timeless Tales of Gods and Heroes, the Aegis is the breastplate of Zeus, and was "awful to behold". However, Zeus is normally portrayed in classical sculpture holding a thunderbolt or lightning, bearing neither a shield nor a breastplate. In classical poetry and art Classical Greece interpreted the Homeric aegis usually as a cover of some kind borne by Athena. It was supposed by Euripides (Ion, 995) that the aegis borne by Athena was the skin of the slain Gorgon, yet the usual understanding is that the Gorgoneion was added to the aegis, a votive offering from a grateful Perseus. In a similar interpretation, Aex, a daughter of Helios, represented as a great fire-breathing chthonic serpent similar to the Chimera, was slain and flayed by Athena, who afterwards wore its skin, the aegis, as a cuirass (Diodorus Siculus iii. 70), or as a chlamys. The Douris cup shows that the aegis was represented exactly as the skin of the great serpent, with its scales clearly delineated. John Tzetzes says that aegis was the skin of the monstrous giant Pallas whom Athena overcame and whose name she attached to her own. In a late rendering by Gaius Julius Hyginus (Poetical Astronomy ii. 13), Zeus is said to have used the skin of a pet goat owned by his nurse Amalthea (aigis "goat-skin") which suckled him in Crete, as a shield when he went forth to do battle against the Titans. The aegis appears in works of art sometimes as an animal's skin thrown over Athena's shoulders and arms, occasionally with a border of snakes, usually also bearing the Gorgon head, the gorgoneion. In some pottery it appears as a tasselled cover over Athena's dress. It is sometimes represented on the statues of