2698. These are rhythms of the Hemiolic class (2527), in 5/8 time. The
fundamental foot is the Bacchīus (⏑ -́ -́). Either (or both) of the two
longs of a bacchīus is sometimes resolved. For the initial short
syllable an irrational long is sometimes substituted. Occasionally two
shorts are so substituted, especially in the first foot of a verse.
2699. (1.) The ictus on the first long of the bacchīus was probably
stronger than that on the second long.
2700. (2.) The bacchiac rhythm, like the Cretic, has an impetuous and
passionate character.