ĒLECTRUM (ἤλεκτρος and ἤλεκτρον), is used by the ancient writers in two different senses, either for _amber_ or for a mixture of metals composed of gold and silver. In Homer and Hesiod, it has, in all probability, the former meaning. The earliest passage of any Greek writer, in which the word is _certainly_ used for the metal, is in the _Antigone_ of Sophocles (1038). This alludes to _native electrum_; but the compound was also made artificially. Pliny states that when gold contains a fifth part of silver, it is called _electrum_; that it is found in veins of gold; and that it is also made by art: if, he adds, it contains more than a fifth of silver, it becomes too brittle to be malleable. But Isidorus mentions electrum composed of _three_ parts gold, and _one_ of silver. Electrum was used for plate, and the other similar purposes for which gold and silver were employed. It was also used as a material for money. Lampridius tells us, that Alexander Severus struck coins of it; and coins are in existence, of this metal, struck by the kings of Bosporus, by Syracuse, and by other Greek states. ĔLEUSĪNĬA (ἐλευσίνια), a festival and mysteries, originally celebrated only at Eleusis in Attica, in honour of Demeter and Persephone. The Eleusinian mysteries, or _the_ mysteries, as they were sometimes called, were the holiest and most venerable of all that were celebrated in Greece. Various traditions were current among the Greeks respecting the author of these mysteries: for, while some considered Eumolpus or Musaeus to be their founder, others stated that they had been introduced from Egypt by Erechtheus, who at a time of scarcity provided his country with corn from Egypt, and imported from the same quarter the sacred rites and mysteries of Eleusis. A third tradition attributed the institution to Demeter herself, who, when wandering about in search of her daughter, Persephone, was believed to have come to Attica, in the reign of Erechtheus, to have supplied its inhabitants with corn, and to have instituted the mysteries at Eleusis. This last opinion seems to have been the most common among the ancients, and in subsequent times a stone was shown near the well Callichoros at Eleusis, on which the goddess, overwhelmed with grief and fatigue, was believed to have rested on her arrival in Attica. All the accounts and allusions in ancient writers seem to warrant the conclusion, that the legends concerning the introduction of the Eleusinia are descriptions of a period when the inhabitants of Attica were becoming acquainted with the benefits of agriculture, and of a regularly constituted form of society.--In the reign of Erechtheus a war is said to have broken out between the Athenians and Eleusinians; and when the latter were defeated, they acknowledged the supremacy of Athens in everything except the mysteries, which they wished to conduct and regulate for themselves. Thus the superintendence remained with the descendants of Eumolpus