He pictures the bolts, hurled by the gods, falling through the crystal spheres where angels sit and pick the fleas from their wings: hurtling, spinning and plunging till, with a roar of white flame, they crash down on Whitehall and fire the roofs; till they rattle the skeleton teeth of the abbey’s dead, melt the glass in the workshops of Southwark, and fry the fish in the Thames.
