What Length of Verse?

What length of verse can serve brave Mopsa's good to show
Whose virtues strange, and beauties such, as no man them may know?
Thus shrewdly burden, then, how can my Muse escape?
The gods must help, and precious things must serve to show her shape
Like great god Saturn, fair, and like fair Venus, chaste
As smooth as Pan, as Juno mild, like goddess Iris fast
With Cupid she foresees, and goes god Vulcan's pace;
And for a taste of all these gifts, she borrows Momus' grace
Her forehead jacinth-like, her cheeks of opal hue
Her twinkling eyes bedecked with pearl, her lips of sapphire blue
Her hair pure crapall stone, her mouth, O heavenly wide
Her skin like burnished gold, her hands like silver ore untried
As for those parts unknown, which hidden sure are best
Happy be they which will believe, and never seek the rest