He ceased; wide conflagration blazing round; The bubbling waters yield a hissing sound. As when the flames beneath a cauldron rise,[272] To melt the fat of some rich sacrifice, Amid the fierce embrace of circling fires The waters foam, the heavy smoke aspires: So boils the imprison’d flood, forbid to flow, And choked with vapours feels his bottom glow. To Juno then, imperial queen of air, The burning river sends his earnest prayer: