II. With respect to Greece and the Olympiad in particular, she will inform her pupil that the Olympic games, celebrated near the town of Olympia, recurred every fifth year; that is to say, there was a clear interval of four years between each revolution of the games. Each Olympiad, therefore, containing four years, it is usual in citing the particular Olympiad in which an event happened, to cite also the year, should that be known, or, being known, should that be of importance. Thus Olymp. CX. 3 would mean that such a thing, say X, occurred in the third year of the 110th Olympiad; that is, four times 110 will be 440; and this, deducted from 777 (the era of the Olympiads), leaves 337 years B.C. as the era when X occurred. Only that, upon reviewing the case, we find that the 110th Olympiad was not absolutely completed, not by one year; which, subtracted from the 337, leaves 336 B.C. as the true date. If her pupil should say, 'But were there no great events in Greece before the Olympiads?' the teacher will answer, 'Yes, a few, but not many of a rank sufficient to be called Grecian.' They are merely local events; events of Thessaly, suppose; events of Argos; but much too obscure, both as to the facts, as to the meaning of the facts, and as to the dates, to be worth any student's serious attention. There were, however, three events worthy to be called _Grecian_; partly because they interested more States than one of Greece; and partly because they have since occupied the Athenian stage, and received a sort of consecration from the great masters of Grecian tragedy. These three events were the fatal story of the house of Oedipus; a story stretching through three generations; and in which the war against the Seven Gates of Thebes was but an episode. Secondly, the Argonautic expedition (voyage of the ship _Argo_, and of the sailors in that ship, _i.e._, the Argonauts), which is consecrated as the first voyage of any extent undertaken by Greeks. Both these events are as full of heroic marvels, and of supernatural marvels, as the legends of King Arthur, Merlin, and the Fairy Morgana. Later than these absolute romances comes the semi-romance of the Iliad, or expedition against Troy. This, the most famous of all Pagan romances, we know by two separate criteria to be later in date than either of the two others; first, because the actors in the Iliad are the descendants of those who figured as actors in the others; secondly, from the subdued tone of the romantic[38] which prevails throughout the Iliad. Now, with respect to these three events in Grecian history, anterior to the Olympiads, which are all that a young student ought to notice, it is sufficient if generally she is made aware of the order in which they stand to each other, or, at least, that the Iliad comes last in the series, and if as to this last and greatest of the series, she fixes its era precisely to one thousand years before Christ. Chronologers, indeed, sometimes bring it down to something