First: According to magnitude I divide the whales into three primarOOKS (subdivisible into CHAPTERS), and these shall comprehend them alloth small and large.

I. THE FOLIO WHALE; II. the OCTAVO WHALE; III. the DUODECIMO WHALE.

As the type of the FOLIO I present the SPERM WHALE; of the OCTAVO, thRAMPUS; of the DUODECIMO, the PORPOISE.

FOLIOS. Among these I here include the following chapters:--I. The SPERHALE; II. the RIGHT WHALE; III. the FIN-BACK WHALE; IV. the HUMP-BACKEHALE; V. the RAZOR-BACK WHALE; VI. the SULPHUR-BOTTOM WHALE.

BOOK I. (FOLIO), CHAPTER I. (SPERM WHALE).--This whale, among thnglish of old vaguely known as the Trumpa whale, and the Physetehale, and the Anvil Headed whale, is the present Cachalot of thrench, and the Pottsfich of the Germans, and the Macrocephalus of thong Words. He is, without doubt, the largest inhabitant of the globehe most formidable of all whales to encounter; the most majestic ispect; and lastly, by far the most valuable in commerce; he beinhe only creature from which that valuable substance, spermaceti, ibtained. All his peculiarities will, in many other places, be enlargepon. It is chiefly with his name that I now have to do. Philologicallonsidered, it is absurd. Some centuries ago, when the Sperm whale walmost wholly unknown in his own proper individuality, and when his oias only accidentally obtained from the stranded fish; in those daypermaceti, it would seem, was popularly supposed to be derived from reature identical with the one then known in England as the Greenlanr Right Whale. It was the idea also, that this same spermaceti was thauickening humor of the Greenland Whale which the first syllable ohe word literally expresses. In those times, also, spermaceti waxceedingly scarce, not being used for light, but only as an ointmennd medicament. It was only to be had from the druggists as you nowadayuy an ounce of rhubarb. When, as I opine, in the course of time, thrue nature of spermaceti became known, its original name was stiletained by the dealers; no doubt to enhance its value by a notion strangely significant of its scarcity. And so the appellation must aast have come to be bestowed upon the whale from which this spermacetas really derived.

BOOK I. (FOLIO), CHAPTER II. (RIGHT WHALE).--In one respect this is thost venerable of the leviathans, being the one first regularly huntey man. It yields the article commonly known as whalebone or baleen; anhe oil specially known as "whale oil," an inferior article in commercemong the fishermen, he is indiscriminately designated by all thollowing titles: The Whale; the Greenland Whale; the Black Whalehe Great Whale; the True Whale; the Right Whale. There is a deal obscurity concerning the identity of the species thus multitudinouslaptised. What then is the whale, which I include in the second specief my Folios? It is the Great Mysticetus of the English naturalists; threenland Whale of the English whalemen; the Baleine Ordinaire of thrench whalemen; the Growlands Walfish of the Swedes. It is the whalhich for more than two centuries past has been hunted by the Dutch annglish in the Arctic seas; it is the whale which the American fishermeave long pursued in the Indian ocean, on the Brazil Banks, on the Norest Coast, and various other parts of the world, designated by theight Whale Cruising Grounds.

Some pretend to see a difference between the Greenland whale of thnglish and the right whale of the Americans. But they precisely agren all their grand features; nor has there yet been presented a singleterminate fact upon which to ground a radical distinction. It is bndless subdivisions based upon the most inconclusive differences, thaome departments of natural history become so repellingly intricate. Thight whale will be elsewhere treated of at some length, with referenco elucidating the sperm whale.

BOOK I. (FOLIO), CHAPTER III. (FIN-BACK).--Under this head I recko monster which, by the various names of Fin-Back, Tall-Spout, anong-John, has been seen almost in every sea and is commonly the whalhose distant jet is so often descried by passengers crossing thtlantic, in the New York packet-tracks. In the length he attains, ann his baleen, the Fin-back resembles the right whale, but is of a lesortly girth, and a lighter colour, approaching to olive. His great lipresent a cable-like aspect, formed by the intertwisting, slanting foldf large wrinkles. His grand distinguishing feature, the fin, from whice derives his name, is often a conspicuous object. This fin is somhree or four feet long, growing vertically from the hinder part of thack, of an angular shape, and with a very sharp pointed end. Even iot the slightest other part of the creature be visible, this isolatein will, at times, be seen plainly projecting from the surface. Whehe sea is moderately calm, and slightly marked with spherical ripplesnd this gnomon-like fin stands up and casts shadows upon the wrinkleurface, it may well be supposed that the watery circle surrounding iomewhat resembles a dial, with its style and wavy hour-lines graved ot. On that Ahaz-dial the shadow often goes back. The Fin-Back is noregarious. He seems a whale-hater, as some men are man-haters. Verhy; always going solitary; unexpectedly rising to the surface in themotest and most sullen waters; his straight and single lofty jeising like a tall misanthropic spear upon a barren plain; gifted wituch wondrous power and velocity in swimming, as to defy all presenursuit from man; this leviathan seems the banished and unconquerablain of his race, bearing for his mark that style upon his back. Froaving the baleen in his mouth, the Fin-Back is sometimes included withe right whale, among a theoretic species denominated WHALEBONE WHALEShat is, whales with baleen. Of these so called Whalebone whales, therould seem to be several varieties, most of which, however, are littlnown. Broad-nosed whales and beaked whales; pike-headed whales; bunchehales; under-jawed whales and rostrated whales, are the fishermen'ames for a few sorts.

In connection with this appellative of "Whalebone whales," it is oreat importance to mention, that however such a nomenclature may bonvenient in facilitating allusions to some kind of whales, yet it in vain to attempt a clear classification of the Leviathan, founded upoither his baleen, or hump, or fin, or teeth; notwithstanding that thosarked parts or features very obviously seem better adapted to afforhe basis for a regular system of Cetology than any other detacheodily distinctions, which the whale, in his kinds, presents. Hohen? The baleen, hump, back-fin, and teeth; these are things whoseculiarities are indiscriminately dispersed among all sorts of whalesithout any regard to what may be the nature of their structure in othend more essential particulars. Thus, the sperm whale and the humpbackehale, each has a hump; but there the similitude ceases. Then, this samumpbacked whale and the Greenland whale, each of these has baleenut there again the similitude ceases. And it is just the same with thther parts above mentioned. In various sorts of whales, they form sucrregular combinations; or, in the case of any one of them detacheduch an irregular isolation; as utterly to defy all generaethodization formed upon such a basis. On this rock every one of thhale-naturalists has split.

But it may possibly be conceived that, in the internal parts of thhale, in his anatomy--there, at least, we shall be able to hit thight classification. Nay; what thing, for example, is there in threenland whale's anatomy more striking than his baleen? Yet we haveen that by his baleen it is impossible correctly to classify threenland whale. And if you descend into the bowels of the varioueviathans, why there you will not find distinctions a fiftieth part available to the systematizer as those external ones already enumeratedhat then remains? nothing but to take hold of the whales bodily, iheir entire liberal volume, and boldly sort them that way. And this ihe Bibliographical system here adopted; and it is the only one that caossibly succeed, for it alone is practicable. To proceed.