But the punishment which Heaven sent him was terrible. Thousands of mice came out of the burning barn, made their way to the palace, filled every chamber and corner, and at last attacked the bishop himself. His servants killed them by hundreds, but their numbers seemed only to increase, as did their ferocity also. The bishop was seized with horror and, anticipating God's punishment, he fled from the town and went on board a boat hoping to defend himself from his terrible pursuers. But the innumerable horde swam in legions after him, and when he reached his tower on the island thinking at least he would be safe there, the mice followed him, gnawing the tower and tearing for themselves an entrance with their sharp teeth, till at last they reached him whom they sought. The cruel man was devoured by the mice, which attacked him by scores. In his despair he offered his soul to the Evil One, if he would release his body from such awful agony. The Evil Spirit came, freed his body, but took his soul away for himself.
Thus runs the legend. History however speaks less severely of Hatto, the imperious prelate.
His great ambition was his desire of power. He was the founder of the temporal power which the seat of Mayence obtained, and which later on made it the first bishopric of the kingdom, but he was always hated by the citizens, who suffered much owing to his proud, despotic character.
It is true that he was the founder of the toll which ships in olden times were obliged to pay on the Rhine, so that this fact and many other cruel exactions of his, have helped to evolve the terrible legend of the Mouse-Tower.
