We now come to the story of the Trojan War, linked with which are the events which led up to it and those which immediately followed upon it—such as the Judgment of Paris on the one hand, and the stories of Odysseus and Orestes on the other. These events are so numerous that they require careful classification. They may be divided into three main sections: (1) Ante-Homerica, including the events that led to the war and those that took place during the first nine years of it; (2) Homerica, or the events of the _Iliad_; (3) Post-Homerica, or the stories of the death of Achilles, the fall of Troy, the _Odyssey_ and other Νοστοί, and the Oresteia. The literary authorities for these events, on the lines of which our classification follows, are discussed elsewhere (p. 4 ff.). In spite of the warning of Horace that in writing of the story of Troy it is not necessary to begin _ab ovo_, it is impossible here to avoid reference to the earliest event which bears at all on the subject—namely, the birth of Helen from the egg, which was the result of Zeus’ _amour_ with Nemesis. The subject is referred to on several vases, the moment chosen being that when the egg is found by Leda.[1341] Her husband Tyndareus and her other offspring, Klytaemnestra and the Twin Brethren, are usually present. There is one undoubted instance of the nuptials of Helen and Menelaos.[1342] The first event, however, which can be regarded as having a direct effect on the outbreak of the war is the marriage of Peleus and Thetis, at which the apple of discord was flung by Eris among the goddesses, and which brought about the birth of the hero of the war, Achilles. In ancient art, especially on vases,[1343] Peleus is depicted forcibly capturing Thetis from the company of her sister Nereids, while she tries to elude him by assuming various shapes, all conventionally indicated in the vase-paintings. Some vases represent the approach of Peleus and his pursuit of Thetis,[1344] the majority the actual struggle (Fig. 128),[1345] and one or two the announcement of the issue to Nereus and the company of Nereids (who are named).[1346] The next stage is the introduction of Thetis to the Centaur Cheiron by Peleus.[1347] Then we have the celebration of their nuptials, with the assembling of the gods, as described by Catullus, and vividly, if quaintly, depicted on the François vase,[1348] followed in due course by Peleus bringing the young Achilles to be educated by Cheiron,[1349] and his subsequent sojourn in Skyros.[1350] There is one possible representation of the seething of Achilles in the caldron to secure his immortality.[1351] * * * * * [Illustration: FIG. 128. PELEUS SEIZING THETIS (BRITISH MUSEUM).]