But the work on which his fame as a national and original poet chiefly rested was his epic or historical poem on the First Punic War. The poem was originally one continuous work, written in the Saturnian metre; though, at a later time, it was divided into seven books. The earlier part of the work dealt with the mythical origin of Rome and of Carthage, the flight of Aeneas from Troy, his sojourn at the court of Dido, and his settlement in Latium. The mythical background of the poem afforded scope for imaginative treatment and invention. Its main substance, however, appears to have been composed in the spirit and tone of a contemporary chronicle. The few fragments that remain from the longer and later portion of the work, evidently express a bare and literal adherence to fact, without any poetical colouring or romantic representation. Ennius and Virgil are both known to have borrowed much from this poem of Naevius. There are many passages in the Aeneid in which Virgil followed, with slight deviations, the track of the older poet. Naevius (as quoted by Servius) introduced the wives of Aeneas and of Anchises, leaving Troy in the night-time,-- Amborum Uxores noctu Troiade exibant capitibus Opertis, flentes abeuntes lacrimis cum multis. He represents Aeneas as having only one ship built by Mercury,--a limitation which did not suit Virgil's account of the scale on which the war was carried on, after the landing in Italy. The account of the storm in the first Aeneid, of Aeneas consoling his followers, of Venus complaining to Jupiter, and of his comforting her with the promise of the future greatness of Rome (one of the cardinal passages in Virgil's epic), were all taken from the old Saturnian poem of Naevius. He speaks also of Anna and Dido, as daughters of Agenor, though there is no direct evidence that he anticipated Virgil in telling the tale of Dido's unhappy love. He mentioned also the Italian Sibyl and the worship of the Penates--materials which Virgil fused into his great national and religious poem. Ennius followed Naevius in representing Romulus as the grandson of Aeneas. The exigencies of his chronology compelled Virgil to fill a blank space of three hundred years with the shadowy forms of a line of Alban kings.