A needless Alexandrine ends the song,

That, like a wounded snake, drags its slow length along.

Pope: Essay on Criticism.

Not so when swift Camilla scours the plain,

Flies o’er th’ unbending corn, and skims along the main.

Pope: Essay on Criticism.

Oft on a plat of rising ground

I hear the far-off curfew sound,

Over some wide-watered shore,

Swinging slow with sullen roar.—Milton: Il Penseroso.