Rogero shocked the valiant Gryphon, where The border of the buckler joined the sight, Who seemed as he would fall, now here, now there, And, from his courser far, last fell outright.
He at the shield had aimed, but smote not fair The mark; and (for Rogero's orb was bright And smooth) the hissing weapon slipt, and wrought Other effect than was in Gryphon's thought.