Moby Dick; Or, The Whale · 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. Thus ends BOOK II. (_Octavo_), and begins BOOK III. (_Duodecimo_). DUODECIMOES.—These include the smaller whales. I. The Huzza Porpoise. II. The Algerine Porpoise. III. The Mealy-mouthed Porpoise. To those who have not chanced specially to study the subject, it may possibly seem strange, that fishes not commonly exceeding four or five feet should be marshalled among WHALES—a word, which, in the popular sense, always conveys an idea of hugeness. But the creatures set down above as Duodecimoes are infallibly whales, by the terms of my definition of what a whale is—_i.e._ a spouting fish, with a horizontal tail.