The length of the sperm whale has been, as is always the case in which

size is the most striking characteristic, greatly exaggerated. Giants

are always said to be much larger than they really are, as tested by

rigid measurements. To say nothing of the fabulous dimensions given by

older writers, even Beale, who had immense opportunities of actual

observation, says that one captured in the Japan seas measured 84 feet

in length. Such statements, however intended in good faith, can never be

relied upon; the difficulties and sources of fallacy in making such

measurements are very great, and we are not assured whether the length

is taken, as it should be, in a straight line between the front end of

the head and the middle of the end of the tail, or following the curves

of the surface of the body, which of course would give a considerably

greater length. I have taken pains to obtain careful measurements of all

the skeletons available of perfectly adult or even aged animals in

various museums which I have visited, and it is curious how nearly alike

they are. Allowing for the distance between the vertebræ and for the

soft parts at either end, about 55 feet seems to be the usual length of

the male sperm whale, and I have never been able to find any substantial

proof that any one has even attained the length of 60 feet, fairly

measured. The skeleton at Burton Constable, prepared from a whale which

came ashore on the Yorkshire coast in 1825, is that of a very aged

animal, and now measures 48 feet 4 inches in length, the vertebræ being

articulated in close apposition, but even if 10 feet are allowed in

addition, this would not bring it up to 60 feet. In the museum of the

Royal College of Surgeons is a lower jaw presented by the late Mr. W. L.

Crowther, of Hobart Town, which was considered as that of the largest

sperm whale ever killed in the Tasmanian seas, and quite unique on

account of its size. It only measures one inch more than the jaw of the

Yorkshire specimen. The female of this species, contrary to what occurs

among the whalebone whales, is very much smaller than the male.

The products of the sperm whale which render it commercially valuable

when killed are (1) sperm oil, obtained by boiling the thick coating of

blubber which everywhere envelops the body of the animal; (2)

spermaceti, contained in the great cavity on the top of the head; (3)

ambergris, formerly used in medicine, and now in perfumery--a concretion

formed in the intestine of this whale, and often found floating on the

surface of the seas it inhabits. Its genuineness is proved by the

presence of the horny beaks of the cephalopods on which the whale feeds.

The capture or “fishery” of the sperm whale will be spoken of later on

in conjunction with that of the other species of whales.

All the other large whales which are of importance to man belong to the

group called “whalebone whales,” because they are provided with a

remarkable apparatus in the mouth for the purpose of obtaining their

food, to which the rather misleading name of “whalebone” has been

given,--a name for which naturalists have substituted “baleen”; but the

former is so completely engrafted into our language, especially in all

commercial transactions connected with the subject, that it will

probably last as long as the material itself, although it is now well

known that it has nothing to do with “bone” in the ordinary acceptation

of the word. What whalebone actually is was apparently a mystery to our

forefathers. Belon in 1551 hazarded the conjecture that it was the

eyebrows of the whale; but others thought that it was the apparatus by

which it steered itself through the water. This notion is probably

connected with the old feudal law cited by Blackstone (vol. i. p. 233),

that the tails of all whales belonged to the Queen as a perquisite to

furnish her Majesty’s wardrobe with whalebone. The whalebone whales have

no teeth in either jaw (except some of a most rudimentary nature, which

disappear even before birth), but in the place teeth usually occupy in

the upper jaw, or rather upon each side of the palate, the whalebone

grows. This consists of flattened horny plates, several hundred in

number on each side, separated by a narrow bare interval along the

middle line. The chemical composition and general character of these

plates resemble those of hair, horn, or hoof. In minute structure they

more nearly resemble the horn of the rhinoceros than any other similar

growth. They are placed transversely to the long axis of the palate,

with very short spaces between them. Each plate or blade is somewhat

triangular in form, with the base attached to the palate and the apex

hanging downwards. The outer edge of the blade is hard and smooth, but

the inner edge and apex fray out into long bristly fibres, so that the

roof of the whale’s mouth looks as if covered with hair, as described by

Aristotle. As the bony palate is more or less arched from before

backwards, the blades are longest near the middle of the series, and

gradually diminish towards the front and back of the mouth.

The use of the whalebone to the whale is to strain the water from the

small marine molluscs, crustaceans, or fish upon which the whales

subsist. In feeding they fill the immense mouth with water containing

shoals of these small creatures, and then on their closing the jaws and

raising the tongue, so as to diminish the cavity of the mouth, the water

streams out through the narrow intervals between the hairy fringe of the

whalebone blades, and escapes through the lips, leaving the living prey

to be swallowed. In the different kinds of whales, which I shall now

speak of, there are great differences in the character of the baleen. In

the Californian grey whale (_Rachianectes glaucus_), an animal which

attains a length of from 30 to 40 feet, the baleen blades are fewer than

two hundred on each side, and far apart, very short (the longest being

from 14 to 16 inches in length), coarse, and inelastic, light brown or

nearly white in colour. From this there is a gradual transition, through

the rorquals or finners, the humpbacks, the southern right whales, up to

the Greenland whale, which exhibits this structure in its greatest

perfection, both for the purposes it serves in the animal economy, and

for the uses to which it has been applied by man.

All the known whalebone whales may be divided into five different groups

or _genera_, as they are called by naturalists, the first of which

(genus _Balæna_) have long been distinguished by practical whalers as

“right whales,” as they are, compared to all the others, the right

whales to catch, being of far the greater commercial value. They are

readily distinguished externally by the perfectly smooth back, without

any trace of a dorsal fin, and by the skin of the throat and chest being

also smooth, whereas in most of the other forms this region presents a

number of deep longitudinal plaits or furrows. Of the right whales there

are two perfectly distinct forms, though whether each of these

represents a single species, or can be subdivided into several, is still

a matter of uncertainty, and for our present purpose of little

importance, as if minute investigation can prove that they are

separable, they are most closely allied and perfectly similar to all

ordinary observation. The two forms, which I shall speak of as species

or kinds, are the Greenland or rather Arctic right whale (_Balæna

mysticetus_) and the southern right whale (_Balæna australis_).

[Illustration: FIG. 9.]

The Arctic right whale (Fig. 9), when full grown, attains the length of

from 45 to 50 feet, a size which, as in the case of the sperm whale, has

generally been greatly exaggerated in old descriptions. As is apparently

the case in all whalebone whales, but contrary to what occurs in the

sperm whale, the female is rather larger than the male. Its external

form is shown in Fig. 9, from a careful drawing by Mr. Robert Gray. In

this species all the peculiarities which distinguish the head and mouth

of the whales from those of other mammals have attained their greatest

development. The head is of enormous size, exceeding one-third of the

whole length of the creature. The cavity of the mouth is fully as large

as that of the body, chest and abdomen together. The upper jaw is very

narrow but greatly arched from before backwards, to increase the height

of the cavity and allow for the great length of the baleen or

“whalebone” blades. The enormous rami of the lower jaw are widely

separated behind, and have a still farther outward sweep before they

meet in front, giving the floor of the mouth the shape of an immense

spoon. The baleen blades attain the number of 380 or more on each side,

and those in the middle of the series have a length of 10 or sometimes

12 feet. They are black in colour, fine, and highly elastic in texture,

and fray out at the inner edge and ends into long, delicate, soft,

almost silky, but very tough hairs. The remarkable development of the

mouth, and of the structures in connection with it, which distinguishes

the right whale among its allies is entirely in relation to the nature

of its food. It is by this apparatus that it is enabled to avail itself

of the minute but highly nutritious crustaceans and pteropods which

swarm in immense shoals in the seas it frequents. The large mouth

enables it to take in at one time a sufficient quantity of water filled

with these small organisms, and the length and delicate structure of the

baleen provide a sufficient strainer or hair-sieve by which the water

can be drained off. If the baleen were rigid, and only as long as is the

aperture between the upper and lower jaws when the mouth is shut, a

space would be left beneath it when the jaws are separated, through

which the water and the minute particles of food would escape together.

But instead of this, the long, slender, brush-like, elastic ends of the

whalebone blades fold back when the mouth is closed, the front ones

passing below the hinder ones in a channel lying between the tongue and

the lower jaw. When the mouth is opened their elasticity causes them to

straighten out like a bow unbent, so that at whatever distance the jaws

are separated the strainer remains in perfect action, filling the whole

of the interval. The mechanical perfection of the arrangement is

completed by the great development of the lower lip, which rises stiffly

above the jawbone, and prevents the long, slender, flexible ends of the

baleen from being carried outwards by the rush of water from the mouth,

when its cavity is being diminished by the closure of the jaws and

raising of the tongue.

If, as appears highly probable, the “bowhead” or right whale of the

Okhotsk Sea and Behring Strait belongs to this species, its range is

circumpolar, but it is strictly limited to the icy seas of the north.

“Though,” as Scammon says, “it is true that these animals are pursued in

the open water during the summer months, in no instance have we learned

of their being captured south of where winter ice-fields are

occasionally met with.” In the Behring Sea it is seldom seen south of

the 55th parallel, and the southern limit of its range in the North Sea

has been ascertained by Eschricht and Reinhardt to be from the east

coast of Greenland at 64° N. lat. along the north of Iceland towards

Spitzbergen. Though found in the seas on both sides of Greenland, and

passing freely from one to the other, it is never seen so far south as

Cape Farewell; but on the Labrador coast, where a cold stream sets down

from the north, its range is somewhat further. There is no authentic

instance of its having been seen or captured upon any European coast.

[Illustration: FIG. 10.]

The southern right whale, or “black whale” (Fig. 10), as it is often

called by whalers, attains about the same length as the last, but

differs in being more slender in form, in possessing a smaller head in

proportion to the body, shorter baleen (scarcely more than half the

length), a differently shaped contour of the upper margin of the lower

lip, and a greater number of vertebræ. Animals of this group closely

resembling each other have been found abundantly in the temperate seas

of both hemispheres, North Atlantic and North Pacific (where they are

regularly hunted by the Japanese), and in the neighbourhood of the Cape

of Good Hope, Kerguelen’s Island, Australia, and New Zealand, but

according to Captain Maury’s charts they are never or rarely seen in the

tropical seas. It is chiefly this supposed isolation of distribution

rather than any constant distinctive characters which has given rise to

the idea that the North Atlantic whale (called _Balæna biscayensis_),

the Japanese (_B. japonica_), the Cape whale (_B. australis_), and the

New Zealand whale (_B. antipodarum_), must be of different species.

Until more numerous specimens of skeletons are procured for our museums,

or more accurate descriptions can be obtained, the question cannot be

satisfactorily determined.

The whalebone whales, not called right whales, are (1) the humpback

(_Megaptera_), or “hunchback” (Fig. 11), so called by whalers on account

of the low hump-like form of the dorsal fin. In Dudley’s account of the

whales of the New England coast (_Phil. Trans._ 1725), the fourth

species is “The bunch or humpback whale, distinguished from the right

whale by having a bunch standing in the place where the fin does in the

finback. This bunch is as big as a man’s head, and a foot high, shaped

like a plug pointing backwards.” A better distinction from all other

whalebone whales is the immense length of the pectoral fins or flippers,

which are indented or scalloped along their margins. The usual length of

the adult ranges from 45 to 50 feet. The baleen plates are short and

broad, and of a deep black colour. This whale has a very wide range,

being found, with no important differences, in both the North and South

Atlantic and Pacific Oceans, and from Greenland to South Georgia. When

caught it yields a fair supply of oil, but much less than the right

whales, and its whalebone is of very inferior quality.

[Illustration: FIG. 11.]

[Illustration: FIG. 12.]

(2) The rorquals, or finners (_Balænoptera_) (Fig. 12). These have the

plicated skin of the throat like that of the humpback, the furrows being

more numerous and close set, but the pectoral fins are comparatively

small, and the dorsal fin distinct, compressed, and triangular. The head

is comparatively small and flat, and pointed in front, the whalebone

short and coarse, the body long and slender, and the tail very much

compressed before it expands into the “flukes.” The rorquals are perhaps

the most abundant and widely distributed of all the whales, being found

in all seas, except the extreme Arctic and probably Antarctic regions.

Owing to the small quantity and inferior quality of their whalebone, the

comparatively limited amount of blubber or subcutaneous fat, their great

activity, and the difficulty of capturing them by the old methods, these

whales were not until recently an object of pursuit by whale-fishers;

but since the introduction of steam-vessels, and especially of explosive

harpoons fired from guns in the place of those hurled by the human hand,

a regular fishery of “finbacks” has been established on the coast of

Finmark, where many hundreds are killed every year, their bodies being

towed to shore for the purpose of flensing. Some of the rorquals attain

the largest size of any of the _Cetacea_, the blue whale (_Balænoptera

sibbaldii_), not unfrequent in the British Seas, reaching a length of 80

or perhaps 85 feet when fully adult. On the other hand, one common

species (_B. rostrata_) never exceeds 30 feet in length.

(3) Besides these there are other two forms of whalebone whales not

reckoned as right whales, the grey whale of the North Pacific

(_Rhachianectes glaucus_), and a small and very peculiar species from

the seas around New Zealand and Australia (_Neobalæna marginata_); but

these being very local in distribution, and of little value except for

museums, are more interesting from a scientific than from a commercial

point of view.

I now proceed to the next part of my subject--the pursuit and capture of

whales by man for the sake of the materials they yield, which are of

value in commerce. The method universally followed is attacking the

animal when it comes to the surface of the water to breathe by means of

a weapon called a harpoon, with an iron sharp-pointed barbed head, and

to the shaft of which is attached a strong line. In former days this was

always thrown by the hand, and to do so effectually required great skill

on the part of the man who wielded it. Now the harpoon is generally

projected from a gun, which carries a considerably greater distance than

could be traversed by a hand-thrown weapon, and the necessity of

approaching so closely to the animal is avoided. Various methods to

increase the efficacy of harpoons have also been introduced including

devices by which they explode within the body of the victim. Long

straight spears or lances are also used to despatch the animal when it

has been secured by the line attached to the harpoon. The whale is

always approached by rowing in a boat as closely to it as necessary.

These boats may be directly connected with a station on the coast or

with a ship out at sea. This gives rise to the primary division of whale

fishing into two principal methods: shore fishing and open-sea fishing,

both of which are extensively practised in various parts of the world.

In the first, a look out is kept from a station on some projecting

headland, and when a whale appears within sight signals are given on

which the boats go out in pursuit, and when a capture takes place the

body is towed to shore for the purpose of obtaining its valuable

products. In the second, the ships sail to some distant part of the open

sea, where it is supposed that whales are likely to be met with. The

look out is kept from the “crow’s nest” on the masthead, and the boats

being all in readiness row out in pursuit the moment a whale is sighted,

and if successful tow their prey to the side of the vessel.

As I mentioned before, all cetaceans have immediately beneath their

skin, and closely connected with it, a very dense layer of what is

called “blubber,” in large whales as much as a foot in thickness,

composed of a network of cellular tissue, the interspaces of which are

filled with oil. This layer, though so adherent to the outer skin as to

be separated from it with difficulty, is only connected with the flesh

or muscles which lie below by loose tissue, and so is easily stripped

off. With a large whale this process, called “flensing,” is effected as

follows. If the animal is caught at sea, the carcass is lashed alongside

the ship, and men with spikes in their shoes, descend upon the slippery

surface, and with large sharp-edged spades perform the cutting part of

the operation, having first fixed, by means of a hook, a strong rope

into the blubber at the junction of the head and the body. This rope

runs over pulleys fixed to the rigging of the ship, and the blubber,

separated by the spades into strips about two or three feet broad, is

gradually hauled up on to the deck of the ship. The cuts being made in a

spiral direction round the body of the whale, the blubber is stripped

off from head to tail, much as a spiral roller or bandage might be, the

body of the whale meanwhile performing a rotatory motion. When the

blubber is brought on board, it is cut up into smaller pieces, and

either stowed in casks or tanks to be brought home to undergo the next

process, that of “trying out,” or if the voyage is of lengthened

duration, as in the case of the South Sea whalers hailing from European

or American ports, this is done on board the ship. It simply consists of

boiling the blubber in large iron pots until the oil is separated from

the mesh of cellular tissue which contained it, the latter being

generally used for fuel in subsequent boilings. In the case of the sperm

whale the upper surface of the great head is opened, and the liquid

spermaceti is baled out of the cavities which contain it, and in the

case of the whalebone whales the whalebone is removed from the mouth.

All the rest of the animal being useless is turned adrift into the sea,

and speedily becomes the prey of voracious sharks and other fish and sea

birds. When whales are caught near the shore, as in many of the

“fisheries,” from boats without the intervention of sea-going vessels,

they are towed into shallow water for the purpose of flensing and

removing the whalebone.

The earliest known regular whale fishery is that which took place from

the Basque towns of France and Spain, Bayonne, Biarritz, St. Jean de

Luz, Fuenterrabia, St. Sebastian, Guetaria, Ondarroa, and many others.

From the tenth century onwards the hardy fishermen of the towns and

villages of this coast pursued the Atlantic right whales in the Bay of

Biscay, at first only catching them from open boats near the shore, but

afterwards, as the whales became more scarce and the whalers more

adventurous, following them in ships across the Atlantic to the

Bermudas, Newfoundland, and Iceland. From this source all the whale oil

and all the whalebone used by our forefathers down to the year 1600 was

derived. Queen Elizabeth and all her court depended upon the Basque

fishermen for the most prominent characteristics of their costume. The

supply was, however, diminishing when the attempt to discover the

North-East route to China, about the close of the sixteenth century, led

to the opening up of the sea between Greenland and Spitzbergen, and the

discovery of the Arctic right whale, an animal up to that time

practically unknown to man. This being much more valuable, both on

account of the larger quantity and finer quality of the whalebone it

produced, and also the larger amount of oil, for many years attracted

the principal attention of the whaling ships of Europe. The English

entered into the business at a very early period, but, being

unacquainted with the methods of capturing whales, engaged Basque

harpooners for all their earliest voyages, and closely followed their

methods. The very word “harpoon” is said to be Basque. The Dutch also

took the fishing up on a very extensive scale, and established a

permanent settlement upon the northern shore of Spitzbergen, which they

named “Smeeremberg,” which was the rendezvous of the whaling fleet

during the summer, and to which the blubber was brought for boiling. In

its most flourishing period, about the year 1680, the Dutch whale

fishery employed as many as 260 ships and 14,000 men. When, however, the

whales became scarcer in the neighbourhood of the coast, and the ships

had to seek them further in the open sea, it was found more economical

to bring the blubber direct to Holland, and Smeeremberg was deserted.

The great war at the end of the last century, in which England kept

possession of the North Sea, put an end to the whale fishery, not only

of Holland, but of France and of all other countries which had engaged

in it, and henceforth we maintained a monopoly of the trade. From the

year 1732 to 1824, our government paid bounties, amounting altogether,

it is calculated, to £2,500,000, to vessels engaged in the northern

whaling business, with a view to encourage the enterprise. The ships at

first sailed from London, then Hull, Yarmouth, and Whitby entered into

the field. In 1819 as many as sixty-five ships went to the north from

Hull. Since 1836 no ship has gone from London, and now Dundee and

Peterhead are the only ports in the British Islands which keep up the

northern whale fishery, though on a much more limited scale than

formerly.

Essays on museums · 第 17 / 35 段