Note 2 — William Hogarth: PAINTER, ENGRAVER, AND PHILOSOPHER. Essays on the Man, the Work, and the Time.

This “Prusia” occurred in the dedication of the “March to Finchley” to Frederick the Great. His friends quizzed him a good deal about the error, and he undertook to correct it by hand in every proof of the plate sold. But he soon grew tired of making the mark ~ with a pen over the single s, and at last had the offensive “Prusia” burnished out of the copper, and the orthodox “Prussia” substituted. But even then the quizzers were not tired, and showed him a Prussian thaler bearing Frederick’s effigy, and the legend of which spoke of him as Borussiæ Rex. ’Twas the story of the old man and his donkey over again.