But most commonly a sudden impulse sent Jacob leaping away into some antic or active amusement, when, instead of following the recitation he would return upon the foregoing words most ready to his tongue, and mouth or gabble, with a see-saw suited to the action of his limbs, a verse on which Mordecai had spent some of his too scanty heart's blood. 
But most commonly a sudden impulse sent Jacob leaping away into some active amusement. 