<span>The answer is It describes the order of events as winter turns to spring. With the happening to April, the ice starts to liquefy from Walden Pond, making a booming thunder in which Thoreau delights. Thoreau says an old man he knows—whose astuteness, Thoreau says, he couldn't match in the event that he lived to be as old as Methuselah—who was hit with fear by the crash of the dissolving ice in spite of his long involvement with the methods for nature. Thoreau depicts it as a sort of all inclusive emergency, proclaiming complete change. The sand moves with the streaming rivulets of water</span>
