The lad changed his position, and once more took careful aim. He took a long breath, and his finger began to tighten on the trigger. At that instant there came a puff of wind, and the wire at which he was aiming swayed toward the unfortunate man. There was a cry of horror, and several persons in the crowd started toward Bart, as if to stop the firing of the gun. But the lad was on the alert, and waited until the wire was still again.