A long syllable put after a short one is termed an iambus, a lively measure, whence also it commanded the name of trimeters to be added to iambics, though it yielded six beats of time, being similar to itself from first to last. Not long ago, that it might come somewhat slower and with more majesty to the ear, it obligingly and contentedly admitted into its paternal heritage the steadfast spondees; agreeing however, by social league, that it was not to depart from the second and fourth place. But this[ kind of measure] rarely makes its appearance in the notable trimeters of Accius, and brands the verse of Ennius brought upon the stage with a clumsy weight of spondees, with the imputation of being too precipitate and careless, or disgracefully accuses him of ignorance in his art. 