FOOTNOTES:

The crystal Thamis wont to glideIn silver channel, down along the lee,[5]

WINDSOR CASTLE.WINDSOR CASTLE.To face page 13.

by lawns and parks, meadows and wooded banks, dotted with country houses and crowned by Windsor Castle itself (see Frontispiece). By many Scotland is considered even more beautiful.

And yet too many of us see nothing in the fields but sacks of wheat, in the meadows but trusses of hay, and in woods but planks for houses, or cover for game. Even from this more prosaic point of view, how much there is to wonder at and admire, in the wonderful chemistry which changes grass and leaves, flowers and seeds, into bread and milk, eggs and cream, butter and honey!

Almost everything, says Hamerton, "that the Peasant does, is lifted above vulgarity by ancient, and often sacred, associations." There is, indeed, hardly any business or occupation with reference to which the same might not be said. The triviality or vulgarity does not depend on what we do, but on the spirit in which it is done. Not only the regular professions, but every useful occupation in life, however humble, is honourable in itself, and may be pursued with dignity and peace.

Working in this spirit we have also the satisfaction of feeling that, as in some mountain track every one who takes the right path, seems to make the way clearer for those who follow; so may we also raise the profession we adopt, and smooth the way for those who come after us. But, even for those who are not Agriculturists, it must be admitted that the country has special charms. One perhaps is the continual change. Every week brings some fresh leaf or flower, bird or insect. Every month again has its own charms and beauty. We sit quietly at home and Nature decks herself for us.

In truth we all love change. Some think they do not care for it, but I doubt if they know themselves.

"Not," said Jefferies, "for many years was I able to see why I went the same round and did not care for change. I do not want change: I want the same old and loved things, the same wild flowers, the same trees and soft ash-green; the turtle-doves, the blackbirds, the coloured yellow-hammer sing, sing, singing so long as there is light to cast a shadowon the dial, for such is the measure of his song, and I want them in the same place. Let me find them morning after morning, the starry-white petals radiating, striving upwards up to their ideal. Let me see the idle shadows resting on the white dust; let me hear the humble-bees, and stay to look down on the yellow dandelion disk. Let me see the very thistles opening their great crowns—I should miss the thistles; the reed grasses hiding the moor-hen; the bryony bine, at first crudely ambitious and lifted by force of youthful sap straight above the hedgerow to sink of its weight presently and progress with crafty tendrils; swifts shot through the air with outstretched wings like crescent-headed shaftless arrows darted from the clouds; the chaffinch with a feather in her bill; all the living staircase of the spring, step by step, upwards to the great gallery of the summer, let me watch the same succession year by year."

After all then he did enjoy the change and the succession.

Kingsley again in his charming proseidyll "My Winter Garden" tries to persuade himself that he was glad he had never travelled, "having never yet actually got to Paris." Monotony, he says, "is pleasant in itself; morally pleasant, and morally useful. Marriage is monotonous; but there is much, I trust, to be said in favour of holy wedlock. Living in the same house is monotonous; but three removes, say the wise, are as bad as a fire. Locomotion is regarded as an evil by our Litany. The Litany, as usual, is right. 'Those who travel by land or sea' are to be objects of our pity and our prayers; and I do pity them. I delight in that same monotony. It saves curiosity, anxiety, excitement, disappointment, and a host of bad passions."

But even as he writes one can see that he does not convince himself. Possibly, he admits, "after all, the grapes are sour"; and when some years after he did travel, how happy he was! At last, he says, triumphantly, "At last we too are crossing the Atlantic. At last the dream of forty years, please God, would be fulfilled, and I shouldsee (and happily not alone), the West Indies and the Spanish Main. From childhood I had studied their Natural History, their Charts, their Romances; and now, at last, I was about to compare books with facts, and judge for myself of the reported wonders of the Earthly Paradise."

No doubt there is much to see everywhere. The Poet and the Naturalist find "tropical forests in every square foot of turf." It may even be better, and especially for the more sensitive natures, to live mostly in quiet scenery, among fields and hedgerows, woods and downs; but it is surely good for every one, from time to time, to refresh and strengthen both mind and body by a spell of Sea air or Mountain beauty.

On the other hand we are told, and told of course with truth, that though mountains may be the cathedrals of Nature, they are generally remote from centres of population; that our great cities are grimy, dark, and ugly; that factories are creeping over several of our counties, blighting them into building ground, replacing trees by chimneys, anddestroying almost every vestige of natural beauty.

But if this be true, is it not all the more desirable that our people should have access to pictures and books, which may in some small degree, at any rate, replace what they have thus unfortunately lost? We cannot all travel; and even those who can, are able to see but a small part of the world. Moreover, though no one who has once seen, can ever forget, the Alps, the Swiss lakes, or the Riviera, still the recollection becomes less vivid as years roll on, and it is pleasant, from time to time, to be reminded of their beauties.

There is one other advantage not less important. We sometimes speak as if to visit a country, and to see it, were the same thing. But this is not so. It is not every one who can see Switzerland like a Ruskin or a Tyndall. Their beautiful descriptions of mountain scenery depend less on their mastery of the English language, great as that is, than on their power of seeing what is before them. It has been to me therefore amatter of much interest to know which aspects of Nature have given the greatest pleasure to, or have most impressed, those who, either from wide experience or from their love of Nature, may be considered best able to judge. I will begin with an English scene from Kingsley. He is describing his return from a day's trout-fishing:—

"What shall we see," he says, "as we look across the broad, still, clear river, where the great dark trout sail to and fro lazily in the sun? White chalk fields above, quivering hazy in the heat. A park full of merry hay-makers; gay red and blue waggons; stalwart horses switching off the flies; dark avenues of tall elms; groups of abele, 'tossing their whispering silver to the sun'; and amid them the house,—a great square red-brick mass, made light and cheerful though by quoins and windows of white Sarsden stone, with high peaked French roofs, broken by louvres and dormers, haunted by a thousand swallows and starlings. Old walled gardens, gay with flowers, shall stretch right and left. Clipt yew alleys shall wander away into mysteriousglooms, and out of their black arches shall come tripping children, like white fairies, to laugh and talk with the girl who lies dreaming and reading in the hammock there, beneath the black velvet canopy of the great cedar tree, like some fair tropic flower hanging from its boughs; and we will sit down, and eat and drink among the burdock leaves, and then watch the quiet house, and lawn, and flowers, and fair human creatures, and shining water, all sleeping breathless in the glorious light beneath the glorious blue, till we doze off, lulled by the murmur of a thousand insects, and the rich minstrelsy of nightingale and blackcap, thrush and dove.

"Peaceful, graceful, complete English country life and country houses; everywhere finish and polish; Nature perfected by the wealth and art of peaceful centuries! Why should I exchange you, even for the sight of all the Alps?"

Though Jefferies was unfortunately never able to travel, few men have loved Nature more devotedly, and speaking of his own home he expresses his opinion that: "Of allsweet things there is none so sweet as fresh air—one great flower it is, drawn round about; over, and enclosing us, like Aphrodite's arms; as if the dome of the sky were a bell-flower drooping down over us, and the magical essence of it filling all the room of the earth. Sweetest of all things is wild-flower air. Full of their ideal the starry flowers strained upwards on the bank, striving to keep above the rude grasses that push by them; genius has ever had such a struggle. The plain road was made beautiful by the many thoughts it gave. I came every morning to stay by the star-lit bank."

Passing to countries across the ocean, Humboldt tells us that: "If I might be allowed to abandon myself to the recollection of my own distant travels, I would instance, amongst the most striking scenes of nature, the calm sublimity of a tropical night, when the stars, not sparkling, as in our northern skies, shed their soft and planetary light over the gently heaving ocean; or I would recall the deep valleys of the Cordilleras, where the tall and slender palms pierce the leafy veil around them, andwaving on high their feathery and arrow-like branches, form, as it were, 'a forest above a forest'; or I would describe the summit of the Peak of Teneriffe, when a horizon layer of clouds, dazzling in whiteness, has separated the cone of cinders from the plain below, and suddenly the ascending current pierces the cloudy veil, so that the eye of the traveller may range from the brink of the crater, along the vine-clad slopes of Orotava, to the orange gardens and banana groves that skirt the shore. In scenes like these, it is not the peaceful charm uniformly spread over the face of nature that moves the heart, but rather the peculiar physiognomy and conformation of the land, the features of the landscape, the ever-varying outline of the clouds, and their blending with the horizon of the sea, whether it lies spread before us like a smooth and shining mirror, or is dimly seen through the morning mist. All that the senses can but imperfectly comprehend, all that is most awful in such romantic scenes of nature, may become a source of enjoyment to man, by opening a wide field to the creative power of his imagination.Impressions change with the varying movements of the mind, and we are led by a happy illusion to believe that we receive from the external world that with which we have ourselves invested it."

Humboldt also singles out for especial praise the following description given of Tahiti by Darwin[6]:—

"The land capable of cultivation is scarcely in any part more than a fringe of low alluvial soil, accumulated round the base of mountains, and protected from the waves of the sea by a coral reef, which encircles at a distance the entire line of coast. The reef is broken in several parts so that ships can pass through, and the lake of smooth water within, thus affords a safe harbour, as well as a channel for the native canoes. The low land which comes down to the beach of coral sand is covered by the most beautiful productions of the inter-tropical regions. In the midst of bananas, orange, cocoa-nut, and breadfruit trees, spots are cleared where yams, sweet potatoes, sugar-cane, and pine-apples are cultivated. Eventhe brushwood is a fruit tree, namely, the guava, which from its abundance is as noxious as a weed. In Brazil I have often admired the contrast of varied beauty in the banana, palm, and orange tree; here we have in addition the breadfruit tree, conspicuous from its large, glossy, and deeply digitated leaf. It is admirable to behold groves of a tree, sending forth its branches with the force of an English Oak, loaded with large and most nutritious fruit. However little on most occasions utility explains the delight received from any fine prospect, in this case it cannot fail to enter as an element in the feeling. The little winding paths, cool from the surrounding shade, led to the scattered houses; and the owners of these everywhere gave us a cheerful and most hospitable reception."

Darwin himself has told us, after going round the world that "in calling up images of the past, I find the plains of Patagonia frequently cross before my eyes; yet these plains are pronounced by all to be most wretched and useless. They are characterised only by negative possessions; without habitations,without water, without trees, without mountains, they support only a few dwarf plants. Why then—and the case is not peculiar to myself—have these arid wastes taken so firm possession of my mind? Why have not the still more level, the greener and more fertile pampas, which are serviceable to mankind, produced an equal impression? I can scarcely analyse these feelings, but it must be partly owing to the free scope given to the imagination. The plains of Patagonia are boundless, for they are scarcely practicable, and hence unknown; they bear the stamp of having thus lasted for ages, and there appears no limit to their duration through future time. If, as the ancients supposed, the flat earth was surrounded by an impassable breadth of water, or by deserts heated to an intolerable excess, who would not look at these last boundaries to man's knowledge with deep but ill-defined sensations?"

Hamerton, whose wide experience and artistic power make his opinion especially important, says:—

"I know nothing in the visible world thatcombines splendour and purity so perfectly as a great mountain entirely covered with frozen snow and reflected in the vast mirror of a lake. As the sun declines, its thousand shadows lengthen, pure as the cold green azure in the depth of a glacier's crevasse, and the illuminated snow takes first the tender colour of a white rose, and then the flush of a red one, and the sky turns to a pale malachite green, till the rare strange vision fades into ghastly gray, but leaves with you a permanent recollection of its too transient beauty."[7]

Wallace especially, and very justly, praises the description of tropical forest scenery given by Belt in his charmingNaturalist in Nicaragua:—

"On each side of the road great trees towered up, carrying their crowns out of sight amongst a canopy of foliage, and with lianas hanging from nearly every bough, and passing from tree to tree, entangling the giants in a great network of coiling cables. Sometimes a tree appears covered with beautiful flowers which do not belong to it, but to one of thelianas that twines through its branches and sends down great rope-like stems to the ground. Climbing ferns and vanilla cling to the trunks, and a thousand epiphytes perch themselves on the branches. Amongst these are large arums that send down long aerial roots, tough and strong, and universally used instead of cordage by the natives. Amongst the undergrowth several small species of palms, varying in height from two to fifteen feet, are common; and now and then magnificent tree ferns send off their feathery crowns twenty feet from the ground to delight the sight by their graceful elegance. Great broad-leaved heliconias, leathery melastomæ, and succulent-stemmed, lop-sided leaved and flesh-coloured begonias are abundant, and typical of tropical American forests; but not less so are the cecropia trees, with their white stems and large palmated leaves standing up like great candelabra. Sometimes the ground is carpeted with large flowers, yellow, pink, or white, that have fallen from some invisible tree-top above; or the air is filled with a delicious perfume, the source of which one seeks aroundin vain, for the flowers that cause it are far overhead out of sight, lost in the great over-shadowing crown of verdure."

"But," he adds, "the uniformity of climate which has led to this rich luxuriance and endless variety of vegetation is also the cause of a monotony that in time becomes oppressive." To quote the words of Mr. Belt: "Unknown are the autumn tints, the bright browns and yellows of English woods; much less the crimsons, purples, and yellows of Canada, where the dying foliage rivals, nay, excels, the expiring dolphin in splendour. Unknown the cold sleep of winter; unknown the lovely awakening of vegetation at the first gentle touch of spring. A ceaseless round of ever-active life weaves the fairest scenery of the tropics into one monotonous whole, of which the component parts exhibit in detail untold variety of beauty."

Siberia is no doubt as a rule somewhat severe and inhospitable, but M. Patrin mentions with enthusiasm how one day descending from the frozen summits of the Altai, he came suddenly on a view of the plain of theObi—the most beautiful spectacle, he says, which he had ever witnessed. Behind him were barren rocks and the snows of winter, in front a great plain, not indeed entirely green, or green only in places, and for the rest covered by three flowers, the purple Siberian Iris, the golden Hemerocallis, and the silvery Narcissus—green, purple, gold, and white, as far as the eye could reach.

Wallace tells us that he himself has derived the keenest enjoyment from his sense of colour:—

"The heavenly blue of the firmament, the glowing tints of sunset, the exquisite purity of the snowy mountains, and the endless shades of green presented by the verdure-clad surface of the earth, are a never-failing source of pleasure to all who enjoy the inestimable gift of sight. Yet these constitute, as it were, but the frame and background of a marvellous and ever-changing picture. In contrast with these broad and soothing tints, we have presented to us in the vegetable and animal worlds an infinite variety of objects adorned with the most beautiful and mostvaried hues. Flowers, insects, and birds are the organisms most generally ornamented in this way; and their symmetry of form, their variety of structure, and the lavish abundance with which they clothe and enliven the earth, cause them to be objects of universal admiration. The relation of this wealth of colour to our mental and moral nature is indisputable. The child and the savage alike admire the gay tints of flowers, birds, and insects; while to many of us their contemplation brings a solace and enjoyment which is both intellectually and morally beneficial. It can then hardly excite surprise that this relation was long thought to afford a sufficient explanation of the phenomena of colour in nature; and although the fact that—

Full many a flower is born to blush unseen,And waste its sweetness on the desert air,

might seem to throw some doubt on the sufficiency of the explanation, the answer was easy,—that in the progress of discovery man would, sooner or later, find out and enjoy every beauty that the hidden recesses of the earth have in store for him."

Professor Colvin speaks with special admiration of Greek scenery:—

"In other climates, it is only in particular states of the weather that the remote ever seems so close, and then with an effect which is sharp and hard as well as clear; here the clearness is soft; nothing cuts or glitters, seen through that magic distance; the air has not only a new transparency so that you can see farther into it than elsewhere, but a new quality, like some crystal of an unknown water, so that to see into it is greater glory." Speaking of the ranges and promontories of sterile limestone, the same writer observes that their colours are as austere and delicate as the forms. "If here the scar of some old quarry throws a stain, or there the clinging of some thin leafage spreads a bloom, the stain is of precious gold, and the bloom of silver. Between the blue of the sky and the tenfold blue of the sea these bare ranges seem, beneath that daylight, to present a whole system of noble colour flung abroad over perfect forms. And wherever, in the general sterility, you find a little moderate verdure—a littlemoist grass, a cluster of cypresses—or whenever your eye lights upon the one wood of the district, the long olive grove of the Cephissus, you are struck with a sudden sense of richness, and feel as if the splendours of the tropics would be nothing to this."

Most travellers have been fascinated by the beauty of night in the tropics. Our evenings no doubt are often delicious also, though the mild climate we enjoy is partly due to the sky being so often overcast. In parts of the tropics, however, the air is calm and cloudless throughout nearly the whole of the year. There is no dew, and the inhabitants sleep on the house-tops, in full view of the brightness of the stars and the beauty of the sky, which is almost indescribable.

"Il faisait," says Bernardin de St. Pierre of such a scene, "une de ces nuits délicieuses, si communes entre les tropiques, et dont le plus abile pinceau ne rendrait pas le beauté. La lune paraissait au milieu du firmament, entourée d'un rideau de nuages, que ses rayons dissipaient par degrés. Sa lumière se répandait insensiblement sur les montagnes de l'îleet sur leurs pitons, qui brillaient d'un vert argenté. Les vents retenaient leurs haleines. On entendait dans les bois, au fond des vallées, au haut des rochers, de petits cris, de doux murmures d'oiseaux, qui se caressaient dans leurs nids, réjouis par la clarté de la nuit et la tranquillité de l'air. Tous, jusqu'aux insectes, bruissaient sous l'herbe. Les étoiles étincelaient au ciel, et se réfléchissaient au sein de la mer, qui répétait leurs images tremblantes."

In the Arctic and Antarctic regions the nights are often made quite gorgeous by the Northern Lights or Aurora borealis, and the corresponding appearance in the Southern hemisphere. The Aurora borealis generally begins towards evening, and first appears as a faint glimmer in the north, like the approach of dawn. Gradually a curve of light spreads like an immense arch of yellowish-white hue, which gains rapidly in brilliancy, flashes and vibrates like a flame in the wind. Often two or even three arches appear one over the other. After a while coloured rays dart upwards in divergent pencils, often green below, yellow in the centre, and crimsonabove, while it is said that sometimes almost black, or at least very dark violet, rays are interspersed among the rings of light, and heighten their effect by contrast. Sometimes the two ends of the arch seem to rise off the horizon, and the whole sheet of light throbs and undulates like a fringed curtain of light; sometimes the sheaves of rays unite into an immense cupola; while at others the separate rays seem alternately lit and extinguished. Gradually the light flickers and fades away, and has generally disappeared before the first glimpse of dawn.

We seldom see the Aurora in the south of England, but we must not complain; our winters are mild, and every month has its own charm and beauty.

InJanuarywe havethe lengthening days."February"the first butterfly."March"the opening buds."April"the young leaves and spring flowers."May"the song of birds."June"the sweet new-mown hay."July"the summer flowers."August"the golden grain."September"the fruit."October"the autumn tints."November"the hoar frost on trees and the pure snow."December"last not least, the holidays of Christmas, and the bright fireside.

It is well to begin the year in January, for we have then before us all the hope of spring.

Oh wind,If winter comes, can spring be long behind?[8]

Spring seems to revive us all. In the Song of Solomon—

My beloved spake, and said unto me,Rise up, my love, my fair one, and come away.For, lo, the winter is past,The rain is over and gone;The flowers appear on the earth;The time of the singing of birds is come,The voice of the turtle is heard in our land,The fig tree putteth forth her green figs,And the vines with the tender grape give a good smell.

"But indeed there are days," says Emerson, "which occur in this climate, at almost any season of the year, wherein the world reaches its perfection, when the air, the heavenly bodies, and the earth make a harmony, as if nature would indulge her offspring.... These halcyon days may be looked for with a little more assurance in that pure October weather, which we distinguish by the name of the Indian summer. The day, immeasurably long, sleeps over the broad hills and warm wide fields. To have lived through all its sunny hours, seems longevity enough." Yet does not the very name of Indian summer imply the superiority of the summer itself,—the real, the true summer, "when the young corn is bursting into ear; the awned heads of rye, wheat, and barley, and the nodding panicles of oats, shoot from their green and glaucous stems, in broad, level, and waving expanses of present beauty and future promise. The very waters are strewn with flowers: the buck-bean, the water-violet, the elegant flowering rush, and the queen of the waters, the pure and splendidwhite lily, invest every stream and lonely mere with grace."[9]

For our greater power of perceiving, and therefore of enjoying Nature, we are greatly indebted to Science. Over and above what is visible to the unaided eye, the two magic tubes, the telescope and microscope, have revealed to us, at least partially, the infinitely great and the infinitely little.

Science, our Fairy Godmother, will, unless we perversely reject her help, and refuse her gifts, so richly endow us, that fewer hours of labour will serve to supply us with the material necessaries of life, leaving us more time to ourselves, more leisure to enjoy all that makes life best worth living.

Even now we all have some leisure, and for it we cannot be too grateful.

"If any one," says Seneca, "gave you a few acres, you would say that you had received a benefit; can you deny that the boundless extent of the earth is a benefit? If a house were given you, bright with marble, its roof beautifully painted with colours andgilding, you would call it no small benefit. God has built for you a mansion that fears no fire or ruin ... covered with a roof which glitters in one fashion by day, and in another by night. Whence comes the breath which you draw; the light by which you perform the actions of your life? the blood by which your life is maintained? the meat by which your hunger is appeased?... The true God has planted, not a few oxen, but all the herds on their pastures throughout the world, and furnished food to all the flocks; he has ordained the alternation of summer and winter ... he has invented so many arts and varieties of voice, so many notes to make music.... We have implanted in us the seeds of all ages, of all arts; and God our Master brings forth our intellects from obscurity."[10]

FOOTNOTES:[1]Choses Vues.[2]Wordsworth.[3]Cicero,De Natura Deorum.[4]Thoreau.[5]Spenser.[6]Darwin'sVoyage of the Beagle.[7]Hamerton'sLandscape.[8]Shelley.[9]Howitt'sBook of the Seasons.[10]Seneca,De Beneficiis.

[1]Choses Vues.

[2]Wordsworth.

[3]Cicero,De Natura Deorum.

[4]Thoreau.

[5]Spenser.

[6]Darwin'sVoyage of the Beagle.

[7]Hamerton'sLandscape.

[8]Shelley.

[9]Howitt'sBook of the Seasons.

[10]Seneca,De Beneficiis.

If thy heart be right, then will every creature be to thee a mirror of life, and a book of holy doctrine.Thomas à Kempis.

If thy heart be right, then will every creature be to thee a mirror of life, and a book of holy doctrine.

Thomas à Kempis.

There is no species of animal or plant which would not well repay, I will not say merely the study of a day, but even the devotion of a lifetime. Their form and structure, development and habits, geographical distribution, relation to other living beings, and past history, constitute an inexhaustible study.

When we consider how much we owe to the Dog, Man's faithful friend, to the noble Horse, the patient Ox, the Cow, the Sheep, and our other domestic animals, we cannot be too grateful to them; and if we cannot, like some ancient nations, actually worship them, we have perhaps fallen into the other extreme, underrate the sacredness of animal life, and treat them too much like mere machines.

Some species, however, are no doubt more interesting than others, especially perhaps those which live together in true communities, and which offer so many traits—some sad, some comical, and all interesting,—which reproduce more or less closely the circumstances of our own life.

The modes of animal life are almost infinitely diversified; some live on land, some in water; of those which are aquatic some dwell in rivers, some in lakes or pools, some on the sea-shore, others in the depths of the ocean. Some burrow in the ground, some find their home in the air. Some live in the Arctic regions, some in the burning deserts; one little beetle (Hydrobius) in the thermal waters of Hammam-Meskoutin, at a temperature of 130°. As to food, some are carnivorous and wage open war; some, more insidious, attack their victims from within; others feed on vegetable food, on leaves or wood, on seeds or fruits; in fact, there is scarcely an animal or vegetable substance which is not the special and favourite food of one or more species. Hence to adapt them to these various requirementswe find the utmost differences of form and size and structure. Even the same individual often goes through great changes.

The development, indeed, of an animal from birth to maturity is no mere question of growth. The metamorphoses of Insects have long excited the wonder and admiration of all lovers of nature. They depend to a great extent on the fact that the little creatures quit the egg at an early stage of development, and lead a different life, so that the external forces acting on them, are very different from those by which they are affected when they arrive at maturity. A remarkable case is that of certain Beetles which are parasitic on Solitary Bees. The young larva is very active, with six strong legs. It conceals itself in some flower, and when the Bee comes in search of honey, leaps upon her, but is so minute as not to be perceived. The Bee constructs her cell, stores itwith honey, and lays her egg. At that moment the little larva quits the Bee and jumps on to the egg, which she proceeds gradually to devour. Having finished the egg, she attacks the honey; but under these circumstances the activity which was at first so necessary has become useless; the legs which did such good service are no longer required; and the active slim larva changes into a white fleshy grub, which floats comfortably in the honey with its mouth just below the surface.

Even in the same group we may find great differences. For instance, in the family of Insects to which Bees and Wasps belong, some have grub larvæ, such as the Bee and Ant; some have larvæ like caterpillars, such as the Sawflies; and there is a group of minute forms the larvæ of which live inside the eggs of other insects, and present very remarkable and abnormal forms.

These differences depend mainly on the mode of life and the character of the food.

Such modifications may be called adaptive, but there are others of a different origin that have reference to the changes which the race has passed through in bygone ages. In fact the great majority of animals do go through metamorphoses (many of them as remarkable, though not so familiar as those of insects), but in many cases they are passed through within the egg and thus escape popular observation. Naturalists who accept the theory of evolution, consider that the development of each individual represents to a certain extent that which the species has itself gone through in the lapse of ages; that every individual contains within itself, so to say, a history of the race. Thus the rudimentary teeth of Cows, Sheep, Whales, etc. (which never emerge from their sockets), the rudimentary toes of many mammals, the hind legs of Whales and of the Boa-constrictor, which are imbedded in the flesh, the rudimentary collar-bone of the Dog, etc., are indicationsof descent from ancestors in which these organs were fully developed. Again, though used for such different purposes, the paddle of a Whale, the leg of a Horse and of a Mole, the wing of a Bird or a Bat, and the arm of a Man, are all constructed on the same model, include corresponding bones, and are similarly arranged. The long neck of the Giraffe, and the short one of the Whale (if neck it can be called), contain the same number of vertebræ.

Even after birth the young of allied species resemble one another much more than the mature forms. The stripes on the young Lion, the spots on the young Blackbird, are well-known cases; and we find the same law prevalent among the lower animals, as, for instance, among Insects and Crustacea. The Lobster, Crab, Shrimp, and Barnacle are very unlike when full grown, but in their young stages go through essentially similar metamorphoses.

No animal is perhaps in this respect more interesting than the Horse. The skull of a Horse and that of a Man, though differing somuch, are, says Flower,[11]"composed of exactly the same number of bones, having the same general arrangement and relation to each other. Not only the individual bones, but every ridge and surface for the attachment of muscles, and every hole for the passage of artery or nerve, seen in the one can be traced in the other." It is often said that the Horse presents a remarkable peculiarity in that the canine teeth grow but once. There are, however, in most Horses certain spicules or minute points which are shed before the appearance of the permanent canines, and which are probably the last remnants of the true milk canines.

The foot is reduced to a single toe, representing the third digit, but the second and fourth, though rudimentary, are represented by the splint bones; while the foot also contains traces of several muscles, originally belonging to the toes which have now disappeared, and which "linger as it were behind, with new relations and uses, sometimes in a reduced, and almost, if not quite, functionlesscondition." Even Man himself presents traces of gill-openings, and indications of other organs which are fully developed in lower animals.

There is in New Zealand a form of Crow (Hura), in which the female has undergone a very curious modification. It is the only case I know, in which the bill is differently shaped in the two sexes. The bird has taken on the habits of a Woodpecker, and the stout crow-like bill of the cock-bird is admirably adapted to tap trees, and if they sound hollow, to dig down to the burrow of the Insect; but it lacks the horny-pointed tip of the tongue, which in the true Woodpecker is provided with recurved hairs, thus enabling that bird to pierce the grub and draw it out. In the Hura, however, the bill of the hen-bird has become much elongated and slightly curved, and when the cock has dug down to the burrow, the hen inserts her long bill anddraws out the grub, which they then divide between them: a very pretty illustration of the wife as helpmate to the husband.

It was indeed until lately the general opinion that animals and plants came into existence just as we now see them. We took pleasure in their beauty; their adaptation to their habits and mode of life in many cases could not be overlooked or misunderstood. Nevertheless the book of Nature was like some missal richly illuminated, but written in an unknown tongue. The graceful forms of the letters, the beauty of the colouring, excited our wonder and admiration; but of the true meaning little was known to us; indeed we scarcely realised that there was any meaning to decipher. Now glimpses of the truth are gradually revealing themselves, we perceive that there is a reason, and in many cases we know what the reason is, for every difference in form, in size, and in colour; for every bone and every feather, almost for every hair.[12]

The colours of animals, generally, I believe, serve as a protection. In some, however, they probably render them more attractive to their mates, of which the Peacock is one of the most remarkable illustrations.

In richness of colour birds and insects vie even with flowers. "One fine red admiral butterfly," says Jefferies,[13]"whose broad wings, stretched out like fans, looked simply splendid floating round and round the willows which marked the margin of a dry pool. His blue markings were really blue—blue velvet—his red and the white stroke shone as if sunbeams were in his wings. I wish there were more of these butterflies; in summer, dry summer, when the flowers seem gone and the grass is not so dear to us, and the leaves are dull with heat, a little colour is so pleasant. To me colour is a sort of food; every spot of colour is a drop of wine to the spirit."

The varied colours which add so much tothe beauty of animals and plants are not only thus a delight to the eye, but afford us also some of the most interesting problems in Natural History. Some probably are not in themselves of any direct advantage. The brilliant mother-of-pearl of certain shells, which during life is completely hidden, the rich colours of some internal organs of animals, are not perhaps of any direct benefit, but are incidental, like the rich and brilliant hues of many minerals and precious stones.

But although this may be true, I believe that most of these colours are now of some advantage. "The black back and silvery belly of fishes" have been recently referred to by a distinguished naturalist as being obviously of no direct benefit. I should on the contrary have quoted this case as one where the advantage was obvious. The dark back renders the fish less conspicuous to an eye looking down into the water; while the white under-surface makes them less visible from below. The animals of the desert are sand-coloured; those of the Arctic regions arewhite like snow, especially in winter; and pelagic animals are blue.

Let us take certain special cases. The Lion, like other desert animals, is sand-coloured; the Tiger which lives in the Jungle has vertical stripes, making him difficult to see among the upright grass; Leopards and the tree-cats are spotted, like rays of light seen through leaves.

An interesting case is that of the animals living in the Sargasso or gulf-weed of the Atlantic. These creatures—Fish, Crustacea, and Mollusks alike—are characterised by a peculiar colouring, not continuously olive like the Seaweed itself, but blotched with rounded more or less irregular patches of bright, opaque white, so as closely to resemble fronds covered with patches of Flustra or Barnacles.

Take the case of caterpillars, which are especially defenceless, and which as a rule feed on leaves. The smallest and youngest are green, like the leaves on which they live. When they become larger, they are characterised by longitudinal lines, which break up the surface and thus render them lessconspicuous. On older and larger ones the lines are diagonal, like the nerves of leaves. Conspicuous caterpillars are generally either nauseous in taste, or protected by hairs.

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