text:  "When that Great Charter which our fathers brought; With their best blood was into question bought When big with ruin o'er each English head Vile slav'ry hung suspended by a thread; When Liberty all trembling and aghast Fear'd for the future knowing what was past; When ev'ry breast was chill'd with deep despair Till reason pointed out that Pratt was there; Lurking most ruffian-like behind a screen So plac'd all things to see himself unseen Virtue with due contempt saw Hogarth stand The murd'rous pencil in his palsied hand