The Life of the Fields

by Richard Jefferies

MIND UNDER WATER

The thud, thud of a horse's hoof does not alarm fish. Basking in the sun under the bank, a jack or pike lying close to the surface of the water will remain unmoved, however heavy the sound may be. The vibrations reach the fish in several ways. There is what we should ourselves call the noise as conveyed by the air, and which in the case of a jack actually at the surface may be supposed to reach him direct. Next there is the vibration passing through the water, which is usually pronounced to be a good medium. Lastly, there is the bodily movement of the substance of the water. When the bank is hard and dry this latter amounts only to a slight shaking, but it frequently happens that the side of a brook or pond is soft, and "gives" under a heavy weight. Sometimes the edge is even pushed into the water, and the brook in a manner squeezed. You can see this when cattle walk by the margin the grassy edge is pushed out, and in a minute way they may be said to contract the stream. It is in too small a degree to have the least apparent effect upon the water, but it is different with the sense of hearing, which is so delicate that the bodily movement thus caused may be reasonably believed to be very audible indeed to the jack. The wire fences which are now so much used round shrubberies and across parks give a very good illustration of the conveyance of sound. Strung tight by a spanner, the strands of twisted wire resemble a stringed instrument. If you place your hand on one of the wires and get a friend to strike it with his stick, say, thirty or forty yards away, you will distinctly feel it vibrate. If the ear is held close enough you will hear it, vibration and sound being practically convertible terms. To the basking jack three such wires extend, and when the cart-horse in the meadow puts down his heavy hoof he strikes them all at once. Yet, though fish are so sensitive to sound, the jack is not in the least alarmed, and there can be little doubt that he knows what it is. A whole herd of cattle feeding and walking about does not disturb him, but if the light step—light in comparison—of a man approach, away he goes. Poachers, therefore, unable to disguise their footsteps, endeavour to conceal them, and by moving slowly to avoid vibrating the earth, and through it the water.

In poaching, the intelligence of the man is backed against the intelligence of the fish or animal, and the poacher tries to get himself into the ways of the creature he means to snare. That is what really takes place as seen by us as lookers-on; to the poacher himself, in nine out of ten cases, it is merely an acquired knack learned from watching others, and improved by practice. But to us, as lookers-on, this is what occurs: the man fits himself to the ways of the creature, and for the time it becomes a struggle between them. It is the same with the Red Indians, and the white trappers and hunters in wild regions, who depend much more on their knowledge of the ways and habits of the fur-bearing animals than upon their skill with the rifle. A man may be an excellent shot with gun or rifle, and yet be quite incapable of coping on comparatively equal terms with wild creatures. He is a sportsman, depending on skill, quick sight, and ready hand—not a hunter. Perhaps the nearest approach to it in legitimate, English sport is in fly-fishing and salmon fishing, when the sportsman relies upon his own unassisted efforts. Deer-stalking, where the sportsman has to reckon on the wind, and its curious twists and turns in valleys and round rocks, would be a very near approach to it did the stalker stalk alone. But all this work is usually done for him by an attendant, a native Highlander; and this man really does pit his intelligence against that of the stag. The Highlander actually is a Red Indian, or hunter, and in this sense struggles with the wild animal. The poacher is the hunter on illegitimate ground, and with arts which it has been mutually agreed shall not be employed.

Considered in this sense it is interesting to observe to what extent the intelligence even of a fish reaches—and I think upon reflection it will be found that the fish is as clever as any creature could be in its position. I deny altogether that the cold-blooded fish—looked on with contempt so far as its intellectual powers are concerned—is stupid, or slow to learn. On the contrary, fish are remarkably quick, not only under natural conditions, but quick at accommodating themselves to altered circumstances which they could not foresee, and the knowledge how to meet which could not have been inherited. The basking jack is not alarmed at the cart-horse's hoofs, but remains quiet, let them come down with ever so heavy a thud. He has observed that these vibrations never cause him any injury. He hears them at all periods of the day and night, often with long intervals of silence and with every possible variation. Never once has the sound been followed by injury or by anything to disturb his peace. So the rooks have observed that passing trains are harmless, and will perch on the telegraph wires or poles over the steam of the roaring locomotive. Observation has given them confidence. Thunder of wheels and immense weight in motion, the open furnace and glaring light, the faces at the long tier of windows—all these terrors do not ruffle a feather. A little boy with a wooden clapper can set a flock in retreat immediately. Now the rooks could not have acquired this confidence in the course of innumerable generations; it is not hereditary; it is purely what we understand by intelligence. Why are the rooks afraid of the little boy with the clapper? Because they have noticed his hostile intent. Why is the basking jack off the instant he hears the light step of a man?

He has observed that after this step there have often followed attempts to injure him; a stone has been flung at him, a long pole thrust into the water; he has been shot at, or felt the pinch of a wire. He remembers this, and does not wait for the attempt to be repeated, but puts himself into safety. If he did not realise that it was a man—and a possible enemy—he would not trouble. The object consequently of the tricks of the poacher is to obliterate himself. If you can contrive to so move, and to so conduct yourself that the fish shall not recognise you as his enemy, you can do much as you please with him, and in varying degrees it is the same with animals. Think a moment by what tokens a fish recognises a man. First, his light, and, compared with other animals, brisk step—a two-step instead of a four-step, remember; two feet, not four hoofs. There is a difference at once in the rhythm of the noise. Four hoofs can by no possibility produce the same sound, or succession of sounds, as is made even by four feet—that is, by two men. The beats are not the same. Secondly, by his motions, and especially the brisk motions of the arms. Thirdly, by this briskness itself; for most animals, except man, move with a slow motion—paradox as it may seem—even when they are going along fast. With them it is usually repose in action. Fourthly, and this is rather curious—experience seems to show that fish, and animals and birds certainly, recognise man by his hat or cap, to which they have a species of superstitious dislike.

Hats are generally of a different hue to the rest of the suit, for one thing; and it was noted, a century ago, that wild creatures have a particular objection to a black hat. A covering to the head at all is so Opposite to their own ideas that it arouses suspicion, for we must remember that animals look on our clothes as our skin. To have a black skin over the hair of the head is somewhat odd. By all these signs a fish knows a man immediately, and as certainly as any creature moving on land would know him. There is no instinctive or hereditary fear of man at all—it is acquired by observation (which a thousand facts demonstrate); so that we are quite justified in believing that a fish really does notice some or all of these attributes of its enemy. What the poacher or wild hunter has to do is to conceal these attributes. To hide the two-step, he walks as slowly as possible, not putting the foot down hard, but feeling the ground first, and gradually pressing it. In this way progress may be made without vibration. The earth is not shaken, and does not communicate the sound to the water. This will bring him to the verge of the place where the fish is basking.

Very probably not only fish, but animals and some birds hear as much by the vibration of the earth as by the sound travelling in the atmosphere, and depend as much upon their immediate perception of the slightest tremor of the earth as upon recognition by the ear in the manner familiar to ourselves. When rabbits, for instance, are out feeding in the grass, it is often possible to get quite close to them by walking in this way, extremely slowly, and carefully placing the foot by slow degrees upon the ground. The earth is then merely pressed, and not stepped upon at all, so that there is no jar. By doing this I have often moved up within gunshot of rabbits without the least aid from cover. Once now and then I have walked across a field straight at them. Something, however, depends on the direction of the wind, for then the question of scent comes in. To some degree it is the same with hares. It is certainly the case with birds, as wood-pigeons, a flock of them, will remain feeding only just the other side of the hedge; but, if you stamp the earth, will rise instantly. So will rooks, though they will not fly far if you are not armed. Partridges certainly secure themselves by their attention to the faint tremor of the ground. Pheasants do so too, and make off, running through the underwood long before any one is in sight. The most sensitive are landrails, and it is difficult to get near them, for this reason. Though the mowing-grass must conceal an approaching person from them as it conceals them from him, these birds change their positions, no matter how quietly he walks. Let him be as cunning as he will, and think to cut off corners and cross the land-rail's retreat, the bird baffles him nine times in ten. That it is advised of the direction the pursuer takes by the vibration of the surface is at least probable. Other birds sit, and hope to escape by remaining still, till they detect the tremor coming direct towards them, when they rise.

Rain and dry weather change the susceptibility of the surface to vibrate, and may sometimes in part account for the wildness or apparent tameness of birds and animals. Should any one doubt the existence of such tremors, he has only to lie on the ground with his ear near the surface; but, being unused to the experiment, he will at first only notice the heavier sounds, as of a waggon or a cart-horse. In recent experiments with most delicate instruments devised to show the cosmic vibration of the earth, the movements communicated to it by the tides, or by the "pull" of the sun and moon, it has been found almost impossible as yet to carry out the object, so greatly are these movements obscured by the ceaseless and inexplicable vibrations of the solid earth. There is nothing unreasonable in the supposition that, if an instrument can be constructed to show these, the ears of animals and birds—living organisms, and not iron and steel—should be able to discover the tremors of the surface.

The wild hunter can still further check or altogether prevent observation by moving on hands and knees, when his weight is widely distributed. In the particular instance of a fish he endeavours to come to the margin of the water at the rear of the fish, whose eyes are so placed that it can see best in front. When he has arrived at the margin, and has to rear himself up, if from hands and knees, or, if already upright, when he commences his work, he tries to conceal his arms, or, rather, to minimise their peculiar appearance as much as practicable by keeping them close to his sides. All this time I am supposing that you are looking at the poacher from the fish. To a fish or any wild animal the arms of a man are suspicious. No other creature that they know possesses these singular appurtenances, which move in almost any direction, and yet have nothing to do with locomotion. You may be sure that this great difference in the anatomical construction of a man is recognised by all wild animals once they are compelled for their own safety to observe him. Arms are so entirely opposite to all the varieties of limb possessed by the varieties of living creatures.

Can you put yourselves in the position of either of these creatures—moving on all-fours, on wings, or by the aid of a membraneous tail and fins, and without arms, and imagine how strange the arms of a man must look? Suppose yourself with your arms tucked to your sides under the fur of an animal; something of the idea may be gathered by putting on a cloak without sleeves or armholes. At once it will be apparent how helpless all creatures are in comparison with man. It is true that apes are an exception; yet their arms are also legs, and they are deficient in the power of the thumb. Man may be defined as an animal with arms. While the creatures of the field or the water have no cause to fear him they do not observe him, but the moment they learn that he is bent on their destruction they watch him narrowly, and his arms are, above all, the part which alarms them. To them these limbs are men's weapons—his tusks, and tusks which strike and wound afar. From these proceed an invisible force which can destroy where it would seem the intervening distance alone would afford safety. The sharp shot, the keen hook, the lacerating wire, the spear—everything which kills or wounds, comes in some manner or other from the arms, down to the stone or the primitive knob-kerrie. Consequently animals, birds, and fishes not only in our own, but in the wildest countries, have learned to watch and to dread man's arms. He raises his arms, and in an instant there shoots forth a bright flash of flame, and before the swift wings can beat the air again the partridge is dashed to the ground.