one in the morning
Then they realized that another earth-tremor was making the whole island tremble . Tom leaped from his blankets , followed by Mr. Damon and Mr. Fenwick , and rushed outside the shack . They felt the earth shaking , but it was over in a few seconds . The shock was a slight one , nothing like as severe as the one in the morning . But it set their nerves on edge . `` Another earthquake ! '' groaned Mr. Damon .