the mortals are often vulnerable to external influences. The poem stands in the tradition of mythological and etiological catalogue poetry such as Hesiod's Catalogue of Women, Callimachus' Aetia, Nicander's Heteroeumena, and Parthenius' Metamorphoses. The first book describes the formation of the world, the ages of man, the flood, the story of Daphne's rape by Apollo and Io's by Jupiter. The second book opens with Phaethon and continues describing the love of Jupiter with Callisto and Europa. The third book focuses on the mythology of Thebes with the stories of Cadmus, Actaeon, and Pentheus. The fourth book focuses on three pairs of lovers: Pyramus and Thisbe, Salmacis and Hermaphroditus, and Perseus and Andromeda. The fifth book focuses on the song of the Muses, which describes the rape of Proserpina. The sixth book is a collection of stories about the rivalry between gods and mortals, beginning with Arachne and ending with Philomela. The seventh book focuses on Medea, as well as Cephalus and Procris. The eighth book focuses on Daedalus' flight, the Calydonian boar hunt, and the contrast between pious Baucis and Philemon and the wicked Erysichthon. The ninth book focuses on Heracles and the incestuous Byblis. The tenth book focuses on stories of doomed love, such as Orpheus, who sings about Hyacinthus, as well as Pygmalion, Myrrha, and Adonis. The eleventh book compares the marriage of Peleus and Thetis with the love of Ceyx and Alcyone. The twelfth book moves from myth to history describing the exploits of Achilles, the battle of the centaurs, and Iphigeneia. The thirteenth book discusses the contest over Achilles' arms, and Polyphemus. The fourteenth moves to Italy, describing the journey of Aeneas, Pomona and Vertumnus, and Romulus and Hersilia. The final book opens with a philosophical lecture by Pythagoras and the deification of Caesar. The end of the poem praises Augustus and expresses Ovid's belief that his poem has earned him immortality. In analyzing the Metamorphoses, scholars have focused on Ovid's organization of his vast body of material. The ways that stories are linked by geography, themes, or contrasts creates interesting effects and constantly forces the reader to evaluate the connections. Ovid also varies his tone and material from different literary genres; G. B. Conte has called the poem "a sort of gallery of these various literary genres". In this spirit, Ovid engages creatively with his predecessors, alluding to the full spectrum of classical poetry. Ovid's