Very easily conceived, but not rendered a jot more easy by aid of this legend of Hercules. The story of him of the Twelve Labours, who had been cheated of the divine mares for which he had bargained, and had mere earthly mares given to him, and who therefore, in revenge, had sacked the town of Troy, is, in the first place, so interpreted as to show "that the opulence of that city had in former times tempted the cupidity of the Greeks;" and then this interpretation is made a ground for supposing that a similar motive had led to the expedition of Agamemnon and his chiefs. As well, surely, have said at once of the second war, what is said of the first, that it was an ordinary case of plunder and violence. It is hard to understand how the earlier legend can assist in giving an historical character to the later. But the elder legend may assist in explaining how a siege of Troy became the great subject of the Homeric poems; and thus, whatever there was of actual siege may be carried altogether into that remote anterior epoch which is shadowed forth, if you will, under the exploits of Hercules. For with that charming candour by which he often contrives to neutralise the errors of his conjectural method of writing history, Dr Thirlwall himself adds:--"This expedition of Hercules may indeed suggest a doubt _whether it was not an earlier and simpler form of the same tradition, which grew at length into the argument of the Iliad_; for there is a striking resemblance between the two wars, not only in the events, but in the principal actors. As the prominent figures in the second siege are Agamemnon and Achilles, who represent the royal house of Mycenae, and that of the Aeacids; so in the first the Argive Hercules is accompanied by the Aeacid Telamon; and even the quarrel and reconciliation of the allied chiefs are features common to both traditions."[6]