BOOK II. (Octavo), CHAPTER V. (Thrasher).—This gentleman is famous for his tail, which he uses for a ferule in thrashing his foes. He mounts the Folio whale’s back, and as he swims, he works his passage by flogging him; as some schoolmasters get along in the world by a similar process. Still less is known of the Thrasher than of the Killer. Both are outlaws, even in the lawless seas.