And when he thought of that he clung with all his force to the wooden bar. He was still swinging to and fro, and on this first swing Bunny had knocked to one side the pile of boxes and the barrel with which he had made himself a sort of ladder so he could reach Mart's trapeze, which was several feet above the barn floor. So, now that the boxes by which he had climbed up were out of reach, Bunny could not get down by using them.