Impromptu In The Assize Court At Lincoln

The moon in the valley of Ajalon
  Stood still at the word of the prophet;
But since certain "Essays" were written
  We don't think so very much of it.
Now, a prophet is raised up among us,
  Whose miracles none can gainsay;
For he spoke, and the great river Witham
  Flowed three days, uphill, the wrong way.