In the cloudless January sky the sun at noonday appears high above the southern horizon, and there is a broad band of sky between it and the line of the sea. This sense of the sun's elevation is caused by the level plain of water, which affords no contrast. Inland the hills rise up, and even at midday the sun in winter does not seem much above their ridges. But here by the shore the sun hangs high, and does not look as if he descended so low in his winter curve. There is little wind, and the wavelets swing gently rather than roll, illumined both in their hollows and on their crests with a film of silver. Three or four miles away a vessel at anchor occasionally sways, and at each movement flashes a bright gleam from her wet side like a mirror. White gulls hawk to and fro by the strand, darting on floating fragments and rising again; their plumage is snowy white in the sunshine. Brown nets lie on the pebbles; brown nets are stretched from the mastheads of the smacks to the sea-wall; brown and deeply wrinkled sails are hoisted to dry in the sun and air. The broad red streaks on the smacks' sides stand out distinctly among the general pitchy hues of gunwales and great coils of rope. Men in dull yellow tan frocks are busy round about among them, some mending nets some stooping over a boat turned bottom upwards, upon which a patch is being placed. It needs at least three or four men to manage this patch properly. These tan frocks vary from a dull yellow to a copperish red colour. A golden vane high overhead points to the westward, and the dolphin, with open mouth, faces the light breeze.

Under the groynes there is shadow as in summer; once and again the sea runs up and breaks on the beach, and the foam, white as the whitest milk, hisses as it subsides among the pebbles; it effervesces and bubbles at the brim of the cup of the sea. Farther along the chalk cliffs stand up clear and sharp, the green sea beneath, and the blue sky above them. There is a light and colour everywhere, the least fragment of colour is brought out, even the worn red tiles washed smooth by the tides and rolled over and over among the pebbles, the sea gleams, and there is everything of summer but the heat. Reflected in the plate-glass windows of the street the sea occupies the shop front, covering over the golden bracelets and jewellery with a moving picture of the silvery waves. The day is lengthened by the light, and dark winter driven away, till, the sun's curve approaching the horizon, misty vapours begin to thicken in the atmosphere where they had not been suspected. The tide is out, and for miles the foam runs in on the level sands, forming a long succession of graceful curves marked with a white edge.

As the sun sinks, the wet sands are washed with a brownish yellow, the colour of ripe wheat if it could be supposed liquid. The sunset, which has begun with pale hues, flushes over a rich violet, soon again overlaid with orange, and succeeded in its turn by a deep red glow—a glow which looks the deeper the more it is gazed at, like a petal of peony. There are no fair faces in the street now, they are all brunettes, fair complexions and dark skins are alike tinted by the sunset; they are all swarthy. On the sea a dull redness reaches away and is lost in the vapour on the horizon; eastwards great vapours, tinged rosy, stand up high in the sky, and seem to drift inland, carrying the sunset with them; presently the atmosphere round the houses is filled with a threatening light, like a great fire reflected over the housetops. It fades, and there is nothing left but a dark cloud at the western horizon, tinted blood-red along its upper edge. Next morning the sun rises, a ball of orange amid streaks of scarlet.

But sometimes the sunset takes other order than this, and after the orange there appears a rayed scarlet crown, such as one sees on old coins—rays of scarlet shoot upward from a common centre above where the sun went down. Sometimes, instead of these brilliant hues, there is the most delicate shading of pearly greys and nameless silver tints, such tints as might be imagined were the clouds like feathers, the art of which is to let the under hue shine through the upper layer of the plumage. Though not so gaudy or at first so striking, these pearl-greys, and silvers, and delicate interweaving of tints are really as wonderful, being graduated and laid on with a touch no camel's hair can approach. Sometimes, again, the sunset shows a burnished sky, like the surface of old copper burnt or oxidised—the copper tinted with rose, or with rose and violet. During the prevalence of the scarlet and orange hues, the moon, then young, shining at the edge of the sunset, appeared faintly green and people remarked how curious a green moon looked on a blue sky, for it was just where the sunset vapour melted into the upper sky. At the same moment the gas-lamps burned green—rows and rows of pale green lights. As the sunset faded both the moon and gas-lamps took their proper hue; hence it appeared as if the change of colour were due to contrast. The gas-lamps had looked greenish several evenings before the new moon shone, and in their case there can be no doubt the tint was contrast merely. One night, some hours after sunset, and long after the last trace of it had disappeared, the moon was sailing through light white clouds, which only partly concealed her, and was surrounded by the ordinary prismatic halo. But outside this halo there was a green circle, a broad green band, very distinct—a pale emerald green. Beautiful and interesting as these sunsets have been, I cannot subscribe to the opinion that they surpass all that have been observed; for I distinctly remember sunsets equally brilliant, and some even more so, which occurred not so very long ago. To those who are in the habit of observing out-of-door phenomena a beautiful sunset is by no means uncommon.

Sometimes the sea disappears under the haze of the winter's day: it is fine, but hazy, and from the hills, looking southwards, the sea seems gone, till, the sun breaking out, two or three horizontal streaks reflected suddenly reveal its surface. Another time the reflection of the sun's rays takes the form of a gigantic and exaggerated hour-glass; by the shore the reflection widens out, narrows as it recedes to a mere path, and again at the horizon widens and fills a mile or more. Then at the horizon the lighted sea seems raised above the general level. Rain is approaching, and then by the beach the sea becomes yellowish, beyond that green, and a hard blue at the horizon; there is one lovely streak of green on the right; in front a broad spot of sunlight where the clouds have parted. The wind sings, and a schooner is working rapidly out to windward for more room. During changeable weather the sky between the clouds occasionally takes a pale yellow hue, like that of the tinted paper used for drawing. This colour is opaque, and evidently depends upon the presence of thin vapour. It is seen when the wind is in the act of changing its direction, and the clouds, arrested in their march, are thrown out of rank. That which was the side becomes the rear of the cloud, and is banked up by the sudden pressure. Clouds coming in from the sea are met with a land wind, and so diverted. The effect of mist on the sea in the dark winter days is to increase distances, so that a ship at four or five miles appears hull down, and her shadowy sails move in vapour almost as thick as the canvas. At evening there is no visible sunset, but presently the whole sky, dull and gloomy, is suffused with a redness, not more in one part than another, but over the entire heavens. So in the clouded mornings, a deep red hue fills the whole dome.

But if the sun rises clear, the rays light up the yellow sand of the quarries inland, the dark brown ploughed fields, and the black copses where many a bud is sleeping and waiting for the spring. A haze lies about the Downs and softens their smooth outline as in summer, if you can but face the bleak wind which never rests up there. The outline starts on the left hand fairly distinguished against the sky. As it sweeps round, it sinks, and is lost in the bluish haze; gradually it rises again, and is visible on the right, where the woods stand leafless on the ridge. Or the vapour settles down thicker, and the vast expanse becomes gloomy in broad day. The formless hills loom round about, the roads and marks of civilisation seem blotted out, it may be some absolute desert for aught that appears. An immense hollow filled with mist lies underneath. Presently the wind drifts the earth-cloud along, and there by a dark copse are three or four horsemen eagerly seeking a way through the plantation. They are two miles distant, but as plainly visible as if you could touch them. By-and-by one finds a path, and in single file the troop rides into the wood. On the other side there is a long stretch of open ploughed field, and about the middle of it little white dots close together, sweeping along as if the wind drove them. Horsemen are galloping on the turf at the edge of the arable, which is doubtless heavy going. The troop that has worked through the wood labours hard to overtake; the vapour follows again, and horsemen and hounds are lost in the abyss.

On a ridge closer at hand, and above the mist, stand two conical wheat ricks sharply defined—all that a draughtsman could seize on. Still, even in winter there is about the hills the charm of outline, and the uncertain haze produces some of the effects of summer, but it is impossible to stay and admire, the penetrating wind will permit of nothing except hard exercise. Looking back now and then, the distant hollows are sometimes visible and sometimes filled; great curtains of mist sweep along illumined by the sunlight above them; the woods are now brown, now dark, and now faintly blue, as the light changes. Over the range-and down in the valley where the hursts or woods are situated, surrounded by meads and cornfields, there are other notes of colour to be found. In the leafless branches of the oak sometimes the sunshine plays on the bark of the smaller boughs, and causes a sense of light and colour among them. The slender boughs of the birch, too, reflect the sunshine as if polished. Beech leaves still adhere to the lower branches, spots of bright brown among the grey and ash tint of the underwood. If a woodpecker passes, his green plumage gleams the more from the absence of the abundant foliage which partly conceals even him in summer. The light-coloured wood-pigeons show distinctly against the dark firs; the golden crest of the tiny wren is to be seen in the furze or bramble.

All broader effects of colour must in winter be looked for in the atmosphere, as the light changes, as the mist passes, as the north wind brings down a blackness, or the gust dries up the furrow; as the colour of the air alters, for it is certain that the air is often full of colour. To the atmosphere we must look for all broader effects. Specks of detail may be sometimes discerned, one or two in a walk, as the white breasts of the lapwings on the dark ploughed ridges; yellow oat-straw by the farm, still retaining the golden tint of summer; if fortunate, a blue kingfisher by the brook, and always dew flashing emerald and ruby.

JANUARY IN THE SUSSEX WOODS

The lost leaves measure our years; they are gone as the days are gone, and the bare branches silently speak of a new year, slowly advancing to its buds, its foliage, and fruit. Deciduous trees associate with human life as this yew never can. Clothed in its yellowish-green needles, its tarnished green, it knows no hope or sorrow; it is indifferent to winter, and does not look forward to summer. With their annual loss of leaves, and renewal, oak and elm and ash and beech seem to stand by us and to share our thoughts. There is no wind at the edge of the wood, and the few flakes of snow that fall from the overcast sky flutter as they drop, now one side higher and then the other, as the leaves did in the still hours of autumn. The delicacy of the outer boughs of the great trees visible against the dark background of cloud is as beautiful in its own way as the massed foliage of summer. Each slender bough is drawn out to a line; line follows line as shade grows under the pencil, but each of these lines is separate. Great boles of beech, heavy timber at the foot, thus end at their summits in the lightest and most elegant pencilling. Where the birches are tall, sometimes the number and closeness of these bare sprays causes a thickening almost as if there were leaves there. The leaves, in fact, when they come, conceal the finish of the trees; they give colour, but they hide the beautiful structure under them. Each tree at a distance is recognisable by its particular lines; the ash, for instance, grows with its own marked curve.

Some flakes of snow have remained on this bough of spruce, pure white on dull green. Sparingly dispersed, the snow can be seen falling far ahead between the trunks; indeed, the white dots appear to increase the distance the eye can penetrate; it sees farther because there is something to catch the glance. Nothing seems left for food in the woods for bird or animal. Some ivy berries and black privet berries remain, a few haws may be found; for the rest, it is gone; the squirrels have had the nuts, the acorns were taken by the jays, rooks, and pheasants. Bushels of acorns, too, were collected by hand as food for the fallow deer in the park. A great fieldfare rises, like a lesser pigeon; fieldfares often haunt the verge of woods, while the redwing thrushes go out into the meadows. It can scarcely be doubted that both these birds come over to escape the keener cold of the winters in Norway, or that the same cause drives the blackbirds hither. In spring we listen to Norwegian songs—the blackbird and the thrush that please us so much, if not themselves of Scandinavian birth, have had a Scandinavian origin. Any one walking about woods like these in January can understand how, where there are large flocks of birds, they must find the pressure of numbers through the insufficiency of food. They go then to seek a warmer climate and more to eat; more particularly probably for sustenance.

The original and simple theory that the majority of birds migrate for food or warmth is not overthrown by modern observations. That appears to be the primary impulse, though others may be traced or reasonably imagined. To suppose, as has been put forward, that birds are endowed with a migratory instinct for the express purpose of keeping down their numbers, in order, that is, that they may perish in crossing the sea, is really too absurd for serious consideration. If that were the end in view, it would be most easily obtained by keeping them at home, where snow would speedily starve them. On the contrary, it will appear to any one who walks about woods and fields that migration is essential to the preservation of these creatures. By migration, in fact, the species is kept in existence, and room is found for life. Apart from the necessity of food, movement and change is one of the most powerful agencies in renewing health. This we see in our own experience; the condition of the air is especially important, and it is well within reasonable supposition that some birds and animals may wish to avoid certain states of atmosphere. There is, too, the question of moulting and change of plumage, and the possibility that this physiological event may influence the removal to a different climate. Birds migrate principally for food and warmth; secondly, on account of the pressure of numbers (for in good seasons they increase very fast); thirdly, for the sake of health; fourthly, for sexual reasons; fifthly, from the operation of a kind of prehistoric memory; sixthly, from choice. One or other of these causes will explain almost every case of migration.

Birds are lively and intellectual, imaginative and affectionate creatures, and all their movements are not dictated by mere necessity. They love the hedge and bush where they were born, they return to the same tree, or the same spot under the eave. On the other hand, they like to roam about the fields and woods, and some of them travel long distances during the day. When the pleasurable cares of the nest are concluded, it is possible that they may in some cases cross the sea solely for the solace of change. Variety of food is itself a great pleasure. By prehistoric memory is meant the unconscious influence of ancient habit impressed upon the race in times when the conformation of land and sea and the conditions of life were different. No space is left for a mysterious agency; migration is purely natural, and acts for the general preservation. Try to put yourself in a bird's place, and you will see that migration is very natural indeed. If at some future period of the world's history men should acquire the art of flying, there can be no doubt that migration would become the custom, and whole nations would change their localities. Man has, indeed, been always a migratory animal. History is little beyond the record of migrations, how one race moved on and overcame the race in front of it. In ancient days lots were cast as to who should migrate, and those chosen by this conscription left their homes that the rest remaining might have room and food. Checking the attempted migration of the Helvetii was the beginning of Caesar's exploits. What men do only at intervals birds do frequently, having greater freedom of movement.

Who can doubt that the wild fowl come south because the north is frozen over? The Laplander and the reindeer migrate together; the Tartars migrate all the year through, crossing the steppes in winding and devious but fixed paths, paths settled for each family, and kept without a map, though invisible to strangers. It is only necessary to watch the common sparrow. In spring his merry chirp and his few notes of song are heard on the roof or in the garden; here he spends his time till the broods are reared and the corn is ripe. Immediately he migrates into the fields. By degrees he is joined by those left behind to rear second broods, and at last the stubble is crowded with sparrows, such flocks no one would believe possible unless they had seen them. He has migrated for food, for his food changes with the season, being mainly insects in spring, and grain and seeds in autumn. Something may, I venture to think, in some cases of migration, be fairly attributed to the influence of a desire for change, a desire springing from physiological promptings for the preservation of health. I am personally subject twice a year to the migratory impulse. I feel it in spring and autumn, say about March, when the leaves begin to appear, and again as the corn is carried, and most strongly as the fields are left in stubble. I have felt it every year since boyhood, often so powerfully as to be quite unable to resist it. Go I must, and go I do, somewhere; if I do not I am soon unwell. The general idea of direction is southerly, both spring and autumn; no doubt the reason is because this is a northern country.

Some little green stays on the mounds where the rabbits creep and nibble the grasses. Cinquefoil remains green though faded, and wild parsley the freshest looking of all; plantain leaves are found under shelter of brambles, and the dumb nettles, though the old stalks are dead, have living leaves at the ground. Grey-veined ivy trails along, here and there is a frond of hart's-tongue fern, though withered at the tip, and greenish grey lichen grows on the exposed stumps of trees. These together give a green tint to the mound, which is not so utterly devoid of colour as the season of the year might indicate. Where they fail, brown brake fern fills the spaces between the brambles; and in a moist spot the bunches of rushes are composed half of dry stalks, and half of green. Stems of willow-herb, four feet high, still stand, and tiny long-tailed tits perch sideways on them. Above, on the bank, another species of willow-herb has died down to a short stalk, from which springs a living branch, and at its end is one pink flower. A dandelion is opening on the same sheltered bank; farther on the gorse is sprinkled with golden spots of bloom. A flock of greenfinches starts from the bushes, and their colour shows against the ruddy wands of the osier-bed over which they fly. The path winds round the edge of the wood, where a waggon track goes up the hill; it is deeply grooved at the foot of the hill. These tracks wear deeply into the chalk just where the ascent begins. The chalk adheres to the shoes like mortar, and for some time after one has left it each footstep leaves a white mark on the turf. On the ridge the low trees and bushes have an outline like the flame of a candle in a draught—the wind has blown them till they have grown fixed in that shape. In an oak across the ploughed field a flock of wood-pigeons have settled; on the furrows there are chaffinches, and larks rise and float a few yards farther away. The snow has ceased, and though there is no wind on the surface, the clouds high above have opened somewhat, not sufficient for the sun to shine, but to prolong the already closing afternoon a few minutes. If the sun shines to-morrow morning the lark will soar and sing, though it is January, and the quick note of the chaffinch will be heard as he perches on the little branches projecting from the trunks of trees below the great boughs. Thrushes sing every mild day in December and January, entirely irrespective of the season, also before rain.

A curious instance of a starling having a young brood at this time of the year, recently recorded, seems to suggest that birds are not really deceived by the passing mildness of a few days, but are obliged to prepare nests, finding themselves in a condition to require them. The cause, in short, is physiological, and not the folly of the bird. This starling had had two previous broods, one in October, and now again in December-January. The starling was not, therefore, deceived by the chance of mild weather; her own bodily condition led her to the nest, and had she been a robin or thrush she would have built one instead of resorting to a cranny. It is certain that individuals among birds and animals do occasionally breed at later periods than is usual for the generality of their species. Exceptionally prolific individuals among birds continue to breed into the winter. They are not egregiously deceived any more than we are by a mild interval; the nesting is caused by their individual temperament.

The daylight has lingered on longer than expected, but now the gloom of the short January evening is settling down fast in the wood. The silent and motionless trees rise out of a mysterious shadow, which fills up the spaces between their trunks. Only above, where their delicate outer branches are shown against the dark sky, is there any separation between them. Somewhere in the deep shadow of the underwood a blackbird calls "ching, ching" before he finally settles himself to roost. In the yew the lesser birds are already quiet, sheltered by the evergreen spray; they have also sought the ivy-grown trunks. "Twit, twit," sounds high overhead as one or two belated little creatures, scarcely visible, pass quickly for the cover of the furze on the hill. The short January evening is of but a few minutes' duration; just now it was only dusky, and already the interior of the wood is impenetrable to the glance. There rises a loud though distant clamour of rooks and daws, who have restlessly moved in their roost-trees. Darkness is almost on them, yet they cannot quite settle. The cawing and dawing rises to a pitch, and then declines; the wood is silent, and it is suddenly night.