The Narwhale has a very picturesque, leopard-like look, being of a milk-white ground color, dotted with round and oblong spots of black.  His oil is very superior, clear and fine; but there is little of it, and he is seldom hunted.  He is mostly found in the circumpolar seas.

Book II. (Octavo), chapter IV. (Killer).—­Of this whale little is precisely known to the Nantucketer, and nothing at all to the professed naturalists.  From what I have seen of him at a distance, I should say that he was about the bigness of a grampus.  He is very savage—­a sort of Feegee fish.  He sometimes takes the great Folio whales by the lip, and hangs there like a leech, till the mighty brute is worried to death.  The Killer is never hunted.  I never heard what sort of oil he has.  Exception might be taken to the name bestowed upon this whale, on the ground of its indistinctness.  For we are all killers, on land and on sea; Bonapartes and Sharks included.

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.

Book III. (Duodecimo), chapter 1. (Huzza Porpoise).—­This is the common porpoise found almost all over the globe.  The name is of my own bestowal; for there are more than one sort of porpoises, and something must be done to distinguish them.  I call him thus, because he always swims in hilarious shoals, which upon the broad sea keep tossing themselves to heaven like caps in a Fourth-of-July crowd.  Their appearance is generally hailed with delight by the mariner.  Full of fine spirits, they invariably come from the breezy billows to windward.  They are the lads that always live before the wind.  They are accounted a lucky omen.  If you yourself can withstand three cheers at beholding these vivacious fish, then heaven help ye; the spirit of godly gamesomeness is not in ye.  A well-fed, plump Huzza Porpoise will yield you one good gallon of good oil.  But the fine and delicate fluid extracted from his jaws is exceedingly valuable.  It is in request among jewellers and watchmakers.  Sailors put it on their hones.  Porpoise meat is good eating, you know.  It may never have occurred to you that a porpoise spouts.  Indeed, his spout is so small that it is not very readily discernible.  But the next time you have a chance, watch him; and you will then see the great Sperm whale himself in miniature.