The first care of Adrastus was to aid Polynices in regaining possession of his lawful share in the government of Thebes. He accordingly invited the most powerful chiefs in his kingdom to join in the expedition,

all of whom readily obeyed the call with the exception of the king's brother-in-law, Amphiaraus, the seer. As he foresaw a disastrous termination to the enterprise, and knew that not one of the heroes, save Adrastus himself, would return alive, he earnestly dissuaded the king from carrying out his project, and declined to take any part in the undertaking. But Adrastus, seconded by Polynices and Tydeus, was obstinately bent on the achievement of his purpose, and Amphiaraus, in order to escape from their importunities, concealed himself in a hiding-place known only to his wife Eriphyle.

Now on the occasion of the marriage of Amphiaraus it had been agreed, that if he ever differed in opinion with the king, his wife should decide the question. As the presence of Amphiaraus was indispensable to the success of the undertaking, and, moreover, as Adrastus would not enter upon it without "the eye of the army," as he called his brother-in-law, Polynices, bent on securing his services, determined to bribe Eriphyle to use her influence with her husband and to decide the question in accordance with his wishes. He bethought himself of the beautiful necklace of Harmonia, wife of Cadmus, which he had brought with him in his flight from Thebes. Without loss of time he presented himself before the wife of Amphiaraus, and held up to her admiring gaze the glittering bauble, promising that if she revealed the hiding-place of her husband and induced him to join the expedition, the necklace should be hers. Eriphyle, unable to withstand the tempting bait, accepted the bribe, and thus Amphiaraus was compelled to join the army. But before leaving his home he extorted a solemn promise from his son Alcmæon that, should he perish on the field of battle, he would avenge his death on his mother, the perfidious Eriphyle.

Seven leaders were now chosen, each at the head of a separate detachment of troops. These were Adrastus the king, his two brothers Hippomedon and Parthenopæus, Capaneus his nephew, Polynices and Tydeus, and Amphiaraus.

When the army was collected they set out for Nemea, which was at this time governed by king Lycurgus. Here the Argives, being short of water, halted on the outskirts of a forest in order to search for a spring, when they saw a majestic and beautiful woman seated on the trunk of a tree, nursing an infant. They concluded from her noble and queenly appearance that she must be a goddess, but were informed by her that she was Hypsipile, queen of the Lemnians, who had been carried away captive by pirates, and sold as a slave to king Lycurgus, and that she was now acting as nurse to his infant son. When the warriors told her that they were in search of water, she laid the child down in the grass, and led them to a secret spring in the forest, with which she alone was acquainted. But on their return they found, to their grief, that the unfortunate babe had been killed during their absence, by a serpent. They slew the reptile, and then collecting the remains of the infant, they buried them with funereal honours and proceeded on their way.

The warlike host now appeared before the walls of Thebes, and each leader placed himself before one of the seven gates of the city in readiness for the attack. Eteocles, in conjunction with Creon, had made due preparations to repel the invaders, and had stationed troops, under the command of trusty leaders, to guard each of the gates. Then, according to the practice of the ancients of consulting soothsayers before entering upon any undertaking, the blind old seer Tiresias was sent for, who, after carefully taking the auguries from the flight of birds, declared that all efforts to defend the city would prove unavailing, unless the youngest descendant of the house of Cadmus would offer himself as a voluntary sacrifice for the good of the state.

When Creon heard the words of the seer his first thought was of his favourite son Menœceus, the youngest scion of the royal house, who was present at the interview. He therefore earnestly implored him to leave the city, and to repair for safety to Delphi. But the gallant youth heroically resolved to sacrifice his life for the

benefit of his country, and after taking leave of his old father, mounted the city walls, and plunging a dagger into his heart, perished in the sight of the contending hosts.

Adrastus now gave his troops the word of command to storm the city, and they rushed forward to the attack with great valour. The battle raged long and furiously, and after heavy losses on both sides the Argives were routed and put to flight.