...roduce anarchy, which, in some way, might lead to the accession to power of the leaders of the rebellion. Accordingly, on the night, and at the same hour, when Mr. Lincoln was murdered, a man named Lewis Payne Powell , of Florida, who had been a Confederate soldier, attempted to slay Mr. Seward, the Secretary of State, who was seriously ill at his house, in consequence ,of having been thrown from his carriage a fe...