How True Jacob dispatched the sea serpent

A saga from the early days of germ theory:
Mr. Jacob bravely set forth like St. George the Knight,
To kill the mythical creature in bloody grim spray.
(The boat is laden with cholera bacteria, opium pills, and bellows full of insect dust.)

German cholera cartoon

The sea serpent wanted to snap, Mr. Jacob speedily presented
a Koch bacillus to it, it had enticed the creature.

The bacillus was swallowed, the beast reared up in pain,
Mr. Jacob said quite merrily: “It comes from that, my dear!”

The monster had to die from real cholera,
And Jacob’s fame is immortal, here and in America.
(Der wahre Jacob, Stuttgart, 1884)