Part 4

Beasts, having twice as many feet as birds, have learned to apply them to many uses. They dig with them, hold down their food with them, fondle their children with them, paw their friends, and scratch their enemies. One does more of one thing and another of another, and the feet soon show the effects of the occupation, the claws first, then the muscles, and even the bones dwindling by disuse, or waxing stout and strong. Then the joy of doing what it can do well impels the beast further on the same path, and its offspring after it.

And this leads at last to specialism. The Indian black bear is a "handy man," like the British Tar--good all round. Its great soft paw is a very serviceable tool and weapon, armed with claws which will take the face off a man or grub up a root with equal ease. When a black bear has found an ant-hill it takes but a few minutes to tear up the hard, cemented clay and lay the deep galleries bare; then, putting its gutta-percha muzzle to the mouth of each, it draws such a blast of air through them that the industrious labourers are sucked into its gullet in drifts. Afterwards it digs right down to the royal chamber, licks up the bloated queen, and goes its way.

But there is another worker in the same mine which does not go to work this way. The ant-eater found fat termites so satisfying that it left all other things and devoted its life to the exploiting of anthills, and now it has no rival at that business, but it is fit for nothing else. Its awkward digging tools will not allow it to put the sole of its foot to the ground, so it has to double them under and hobble about like a Chinese lady. It has no teeth, and stupidity is the most prominent feature of its character. It has become that poor thing, a man of one idea.

But the bear is like a sign-post at a parting of the ways. If you compare a brown bear with the black Indian, or sloth bear, as it is sometimes called, you may detect a small but pregnant difference. When the former walks, its claws are lifted, so that their points do not touch the ground. Why? I have no information, but I know that it is not content with a vegetarian diet, like its black relative, but hankers after sheep and goats, and I guess that its murderous thoughts flow down its nerves to those keen claws. It reminds me of a man clenching his fist unconsciously when he thinks of the liar who has slandered him.

But what ages of concentration on the thought and practice of assassination must have been required to perfect that most awful weapon in Nature, the paw of a tiger, or, indeed, of any cat, for they are all of one pattern. The sharpened flint of the savage has become the scimitar of Saladin, keeping the keenness of its edge in a velvet sheath and flashing out only on the field of battle. Compare that paw with the foot of a dog, and you will, perhaps, see with me that the servility and pliancy of the slave of man has usurped a place in his esteem which is not its due. The cat is much the nobler animal. Dogs, with wolves, jackals, and all of their kin, love to fall upon their victim in overwhelming force, like a rascally mob, and bite, tear, and worry until the life has gone out of it; the tiger, rushing single-handed, with a fearful challenge, on the gigantic buffalo, grasps its nose with one paw and its shoulder with the other, and has broken its massive neck in a manner so dexterous and instantaneous that scarcely two sportsmen can agree about how the thing is done.

I have said that the foot first appeared when the backboned creatures came out of the waters to live upon the dry land. But all mundane things (not excepting politics) tend to move in circles, ending where they began; and so the foot, if we follow it far enough, will take us back into water. See how the rat--I mean our common, omnivorous, scavenging, thieving, poaching brown rat--when it lives near a pond or stream, learns to swim and dive as naturally as a duck. Next comes the vole, or water-rat, which will not live away from water. Then there are water shrews, the beaver, otter, duck-billed platypus, and a host of others, not related, just as, among birds, there are water ousels, moorhens, ducks, divers, etc., which have permanently made the water their home and seek their living in it. All these have attained to web-footedness in a greater or less degree.

That this has occurred among reptiles, beasts, and birds alike shows what an easy, or natural, or obvious (put it as you will) modification it is. And it has a consequence not to be escaped. Just as a man who rides a great deal and never walks acquires a certain indirectness of the legs, and you never mistake a jockey for a drill-sergeant, so the web-footed beasts are not among the things that are "comely in going."

Following this road you arrive at the seal and sea-lion. Of all the feet that I have looked at I know only one more utterly ridiculous than the twisted flipper on which the sea-lion props his great bulk in front, and that is the forked fly-flap which extends from the hinder parts of the same. How can it be worth any beast's while to carry such an absurd apparatus with it just for the sake of getting out into the air sometimes and pushing itself about on the ice and being eaten by Polar bears? The porpoise has discarded one pair, turned the other into decent fins, and recovered a grace and power of motion in water which are not equalled by the greyhound on land. Why have the seals hung back? I believe I know the secret. It is the baby! No one knows where the porpoise and the whale cradle their newborn infants--it is so difficult to pry into the domestic ways of these sea-people--but evidently the seals cannot manage it, so they are forced to return to the land when the cares of maternity are on them.

I have called the feet of these sea beasts ridiculous things, and so they are as we see them; but strip off the skin, and lo! there appears a plain foot, with its five digits, each of several joints, tipped with claws--nowise essentially different, in short, from that with which the toad, or frog, first set out in a past too distant for our infirm imagination. Admiration itself is paralysed by a contrivance so simple, so transmutable, and so sufficient for every need that time and change could bring.

There remains yet one transformation which seems simple compared with some that I have noticed, but is more full of fate than they all; for by it the foot becomes a hand. This comes about by easy stages. The reason why one of a bird's four toes is turned back is quite plain: trees are the proper home of birds, and they require feet that will grasp branches. So those beasts also that have taken to living in trees have got one toe detached more or less from the rest and arranged so that it can co-operate with them to catch hold of a thing. Then other changes quickly follow. For, in judging whether you have got hold of a thing and how much force you must put forth to keep hold of it, you are guided entirely by the pressure on the finger-points, and to gauge this pressure nicely the nerves must be refined and educated. In fact, the exercise itself, with the intent direction of the mind to the finger-points, brings about the refinement and education in accordance with Sandow's principle of muscle culture.

For an example of the result do not look at the gross paw of any so-called anthropoid ape, gorilla, orang-outang, or chimpanzee, but study the gentle lemur. At the point of each digit is a broad elastic pad, plentifully supplied with delicate nerves, and the vital energy which has been directed into them appears to have been withdrawn from the growth of the claws, which have shrunk into fine nails just shielding the fleshy tips. In short, the lemur has a hand on each of its four limbs, and no feet at all. And as it goes about its cage--I am at the Zoo in spirit--with a silent wonder shining out of its great eyes, it examines things by feeling them with its hands.

How plainly a new avenue from the outer world into its mind has been opened by those fingers! But how about scratching? What would be the gain of having higher susceptibilities and keener perceptions if they only aggravated the triumph of the insulting flea? Nay, this disaster has been averted by reserving a good sharp claw on the forefinger (not the thumb) of each hind hand.

The old naturalists called the apes and lemurs Quadrumana, the "four-handed," and separated the Bimana, with one species--namely, Homo sapiens. Now we have anatomy cited to belittle the difference between a hand and a foot, and geology importuned to show us the missing link, pending which an order has been instituted roomy enough to hold monkeys, gorillas, and men. It is a strange perversity. How much more fitting it were to bow in reverent ignorance before the perfect hand, taken up from the ground, no more to dull its percipient surfaces on earth and stones and bark, but to minister to its lord's expanding mind and obey his creative will, while his frame stands upright and firm upon a single pair of true feet, with their toes all in one rank.

BILLS OF BIRDS

The prospectus, or advertisement, of a certain American typewriting machine commences by informing the public that "The ---- typewriter is founded on an idea." When I saw this phrase I secured it for my collection, for I felt that, without jest, it contained the kernel of a true philosophy of Nature. The forms, the phainomena, of Nature are innumerable, multifarious, interwoven, and infinitely perplexing, and you may spend a happy life in unravelling their relations and devising their evolutions; but until you have looked through them and seen the ideas that are behind them you are a mere materialist and a blind worker. The soul of Nature is hid from you.

What is the bill of a bird and what does it mean? I do not refer to the bill of a hawk, or a heron, or an owl, or an ostrich, but to that which is the abstract of all these and a thousand more. I hold, regardless of anatomy and physiology, that a bird is a higher being than a beast. No beast soars and sings to its sweetheart; no beast remains in lifelong partnership with the wife of its youth; no beast builds itself a summer-house and decks it with feathers and bright shells. A beast is a grovelling denizen of the earth; a bird is a free citizen of the air. And who can say that there is not a connection between this difference and other developments? The beast, thinking only of its appetites, has evolved a delicate nose, a discriminating palate, three kinds of teeth to cut, tear, and grind its food, salivary glands to moisten the same, and a perfected apparatus of digestion.

The bird, occupied with thoughts of love and beauty, with "fields, or waves, or mountains" and "shapes of sky or plain," has made little advance in the art and instruments of good living. It swallows its food whole, scarcely knowing the taste of it, and a pair of forceps for picking it up, tipped and cased with horn, is the whole of its dining furniture. For the bill of a bird, primarily and essentially, is that and nothing else. In the chickens and the sparrows that come to steal their food, and the robin that looks on, and all the little dicky-birds, you may see it in its simplicity. The size and shape may vary, as a Canadian axe differs from a Scotch axe; some are short and stout and have a sharp edge for shelling seeds; some are longer and fine-pointed, for picking worms and caterpillars out of their hiding-places; some a little hooked at their points, and one, that of the crossbill, with points crossed for picking the small seeds out of fir-cones; but all are practically the same tool. Yet the last distinctly points the way to those modifications by which the simple bill is gradually adapted to one special purpose or another, until it becomes a wonderful mechanism in which the original intention is quite out of sight.

At this point I find an instructive parable in my tool chest. Fully half of the tools are just knives. A chisel is a knife, a plane is a knife set in a block of wood, a saw is a knife with the edge notched. Moreover, there are many sorts of curious planes and saws, each intended for one distinct kind of fine work. All these the joiner has need of, but a schoolboy would rather have one good, strong pocket-knife than the whole boxful. For, just in proportion as each tool is perfected for its own special work, it becomes useless for any other. And your schoolboy is not a specialist. He wants a tool that will cut a stick, carve a boat, peel an apple, dig out a worm--in short, one that will do whatever his active mind wants done.

Now apply this parable to the birds. If you see a bill that is nothing but a large and powerful pair of forceps, good for any rough job, you may know without further inquiry that the owner is no limited specialist, but a "handy man," bold, enterprising, resourceful, and good all round. He will not starve in the desert. No wholesome food comes amiss to him--grub, slug, or snail, fruit, eggs, a live mouse or a dead rat, and he can deal with them all. Such are the magpie, the crow, the jackdaw, and all of that ilk; and these are the birds that are found in all countries and climates, and prosper wherever they go.

But all birds cannot play that part. One is timid, another fastidious, another shy but ingenious. So, in the universal competition for a living, each has taken its own line according to the bent of its nature, and its one tool has been perfected for its trade until it can follow no other. The thrush catches such worms as rashly show themselves above-ground; but an ancient ancestor of the snipe found that, if it followed them into marshy lands, it could probe the soft ground and drag them out of their chambers. For this operation it has now a bill three inches long, straight, thin and sensitive at the tip, a beautiful instrument, but good for no purpose except extracting worms from soft ground. If frost or drought hardens the ground, the snipe must starve or travel. Among the many "lang nebbit" birds that follow the same profession as the snipe, some, like the curlew and the ibis, have curved bills of prodigious length. I do not know the comparative advantages of the two forms, but no doubt each bird swears by its own pattern, as every golfer does by his own putter.

But now behold another grub-hunter, which, distasting mud, has discovered an unworked mine in the trunks of trees. There, in deep burrows, lurked great succulent beetle-grubs, demanding only a tool with which they might be dug out. This has been perfected by many stages, and I have now before me a splendid specimen of the most improved pattern--namely, the bill of the great black woodpecker of Western India, a bird nearly as big as a crow. It is nothing else than a hatchet in two parts, which, when locked together, present a steeled edge about three-eighths of an inch in breadth. The hatchet is two and a half inches long by one in breadth at the base, and a prominent ridge, or keel, runs down the top from base to point. It is further strengthened by a keel on each side. Inside of it, ere the bird became a mummy, was her tongue, which I myself drew out three inches beyond the point of the bill. It was rough and tough, like gutta-percha, tipped with a fine spike, and armed on each side, for the last inch of its length, with a row of sharp barbs pointing backwards. The whole was lubricated with some patent stickfast, "always ready for use." That grub must sit tight indeed which this corkscrew will not draw when once the hatchet has opened a way.

The swallows and swifts, untirable on their wings, but too gentle to hold their own in a jostling crowd, soared away after the midges and May-flies and pestilent gnats that rise from marsh and pond to hold their joyous dances under the blue dome. Continually rushing open-mouthed after these, they have stretched their gape from ear to ear; but their bills have dwindled by disuse and left only an apology for their absence.

Compared with all these, the birds that can do with a diet of fruit only lead an easy life. They have just to pluck and eat--that is, if they are pleased with small fruits and content to swallow them whole. But the hornbills, being too bulky to hop among twigs, need a long reach; hence the portentous machines which they carry on their faces. The beak of a hornbill is nothing else than a pair of tongs long enough to reach and strong enough to wrench off a wild fig from its thick stem. If it were of iron it would be thin and heavy; being of cellular horn-stuff it is bulky but light. If you ask why it should rise up into an absurd helmet on the queer fowl's head, I cannot tell. Nature has quaint ways of using up surplus material.

An easy life begets luxury, and among fruit-eaters the parrot has become an epicure. It will not swallow its food whole, and its bill deserves study. In birds generally the upper mandible is more or less joined to the skull, leaving only the lower jaw free to move. But in the parrot the upper mandible is also hinged, so that each plays freely on the other. The upper, as we all know, is hooked and pointed; the lower has a sharp edge. The tongue is thick, muscular, and sensitive. The whole makes a wonderful instrument, unique among birds, for feelingly manipulating a dainty morsel, shelling, peeling, and slicing, until nothing is left but the sweetest part of the core. Of all gourmands Polly is the most shameless waster.

Long before land, trees, and air had been exploited the primitive bird must have discovered the harvest of the waters, and here the competition has been very keen indeed. Yet the form of bill most in use is very simple--just a plain pair of forceps, long and sharp-pointed like scissors. This is evidently hard to beat, for birds of many sorts use it, handling it variously. The kingfisher plumps bodily down on the minnow from an overhanging perch; the solan goose, soaring, plunges from a "pernicious height"; the heron, high on its stilts, darts out a long and serpentine neck; the diver, with similar beak and neck, but different legs, pursues the fleeing shoals under water; to the swift and slippery fish all are alike terrible in their certainty.

There are, however, other varieties of the fishing bill. Some have a hook at the point, as that of the cormorant, and some are straight at the top, but curved on the under side. This last form is handy for storks, which do not pluck fish out of water so much, but scoop up frogs, crabs, and reptiles from the ground. The ridiculous bill of the puffin, or sea-parrot, is an eccentricity. There may be some idea in it, but I suspect it is an effect of vanity merely, being coloured blue, yellow, and red, and quite in keeping with the other absurdities of the wearer.

Apart from all these and by itself stands a princely fisher whose bill is no modification, but an original invention and a marvellous one. Larger than a swan and gluttonous withal, the pelican cannot live on single fishes. It has given up angling altogether and taken to netting; and the way in which the net has been constructed out of the pair of forceps provided in the original plan of its construction is as well worth your examining as anything I know. It is a foot in length, the upper jaw is flat and broad, while the lower consists of two thin, elastic bones joined at the point, a mere ring to carry the curious yellow bag that hangs from it. In pictures this is represented as a creel in which the kind pelican carries home the children's breakfast; you are allowed to see the tail of a big fish hanging out. But it is not a creel; it is a net. The great birds, marshalled in line on some broad lake or marsh, and beating the water with their wings, drive the fish before them until they have got a dense crowd huddled in panic and confusion between them and the shore. Now watch them narrowly. As each monstrous bill opens, the thin bones of the lower jaw stretch sideways to the breadth of a span by some curious mechanism not described in the books, and at the same time the shrunken bag expands into a deep, capacious net. Simultaneously the whole instrument is plunged into the struggling, silvery mass and comes up full. The side bones instantly contract again, and the upper jaw is clapped on them like a lid. No wonder the fishermen of the East detest the pelican.

In the same marsh, perhaps, standing with unequalled grace upon the longest legs known in this world, is a troop of giant birds as wonderful as the pelican, but how opposite! The beautiful flamingo is a bird of feeble intellect, delicate appetite, and genteel tastes. It cannot eat fish, for its slender throat would scarcely admit a pea. Besides, the idea of catching anything, or even picking up food from the ground, does not occur to its simple mind. Its diet consists of certain small crustaceans, classed by naturalists with water-fleas, which abound in brackish water; and it has an instrument for taking these which it knows how to use. I kept flamingos once, and, after trying many things in vain, offered them bran, or boiled rice, floating in water. Then they dined, and I learned the construction and working of the most marvellous of all bills. The lower jaw is deep and hollow, and its upper edges turn in to meet each other, so that you may fairly describe it as a pipe with a narrow slit along the upper side. In this pipe lies the tongue, and it cannot get out, for it is wider than the slit, but it can be pressed against the top to close the slit, and then the lower jaw becomes an actual pipe. The root of the tongue is furnished on both sides with a loose fringe which we will call the first strainer. The upper jaw is thin and flat and rests on the lower like a lid, and it is beautifully fringed along both sides with small, leathery points, close set, like the teeth of a very fine saw. This is the second strainer. To work the machine you dip the point into dirty water full of water-fleas, draw back the tip of the tongue a little, and suck in water till the lower jaw (the pipe) is full, then close the point again with the tip of the tongue and force the water out. It can only get out by passing through the first strainers at the root of the tongue, then over the palate, and so through the second strainers at the sides of the bill; and all the solid matter it contained will remain in the mouth. The sucking in and squirting out of the water is managed by the cheeks, or rather by the cheek, for a flamingo has only one cheek, and that is situated under the chin. When the bird is feeding you will see this throbbing faster than the eye can follow it, while water squirts from the sides of the mouth in a continuous stream. I should have said that the whole bill is sharply bent downwards at the middle. The advantage of this is that when the bird lets down its head into the water, like a bucket into a well, the point of the bill does not stick in the mud, but lies flat on it, upside down.