<em>Logos</em> refers to an appeal based on logic. When an author uses logos, he wants to convince his audience of his position by using evidence and logical arguments. In these lines, Lincoln tells the audience that the union of the states is protected by the Constitution and by natural law. He also tells them that there is no provision in its organic law for its own termination. These are pieces of evidence that support Lincoln's arguments.
What happens is Poe implies incestuous relations sustained the genetic line and that Roderick and Madeline are the products of extensive intermarriage within the Usher family. In the end, both houses “die” at the same time: Madeline falls on her brother, and the mansion collapses.
<span>In the Odyssey, Zeus agrees if Helios shines over mortals in the fields of grain he will help Helios get revenge by throwing down one white-hot bolt to make splinters of their (Odysseus and his men) ship in the winedark sea.</span>
