-- 7. It remains only to be noticed, that the direction of the lamination (or separation into small folio) is, in these rocks, not always, nor even often indicative of the true direction of their larger beds. It is not, however, necessary for the reader to enter into questions of such complicated nature as those which belong to the study of slaty cleavage; and only a few points, which I could not pa.s.s over, are noted in the Appendix; but it is necessary to observe here, that all rocks, however const.i.tuted, or however disposed, have certain ways of breaking in one direction rather than another, and separating themselves into blocks by means of smooth cracks or fissures, technically called joints, which often influence their forms more than either the position of their beds, or their slaty lamination; and always are conspicuous in their weathered ma.s.ses. Of these, however, as it would be wearisome to enter into more detail at present, I rather choose to speak incidentally, as we meet with examples of their results in the scenery we have to study more particularly.

FOOTNOTES

[48] Compare the close of -- 11, Chap. III. Vol. III., and, here, Chap. III. -- 23.

CHAPTER XI.

OF THE MATERIALS OF MOUNTAINS:--FOURTHLY, COMPACT COHERENTS.

-- 1. This group of rocks, the last we have to examine, is, as far as respects geographical extent and usefulness to the human race, more important than any of the preceding ones. It forms the greater part of all low hills and uplands throughout the world, and supplies the most valuable materials for building and sculpture, being distinguished from the group of the slaty coherents by its incapability of being separated into thin sheets. All the rocks belonging to the group break irregularly, like loaf sugar or dried clay. Some of them are composed of hardened calcareous matter, and are known as limestone; others are merely hardened sand, and are called freestone or sandstone; and others, appearing to consist of dry mud or clay, are of less general importance, and receive different names in different localities.

-- 2. Among these rocks, the foremost position is, of course, occupied by the great group of the marbles, of which the substance appears to have been prepared expressly in order to afford to human art a perfect means of carrying out its purposes. They are of exactly the necessary hardness,--neither so soft as to be incapable of maintaining themselves in delicate forms, nor so hard as always to require a blow to give effect to the sculptor's touch; the mere pressure of his chisel produces a certain, effect upon them. The color of the white varieties is of exquisite delicacy, owing to the partial translucency of the pure rock; and it has always appeared to me a most wonderful ordinance,--one of the most _marked_ pieces of purpose in the creation,--that all the variegated kinds should be comparatively opaque, so as to set off the color on the surface, while the white, which if it had been opaque would have looked somewhat coa.r.s.e (as, for instance, common chalk does), is rendered just translucent enough to give an impression of extreme purity, but not so translucent as to interfere in the least with the distinctness of any forms into which it is wrought. The colors of variegated marbles are also for the most part very beautiful, especially those composed of purple, amber, and green, with white; and there seems to be something notably attractive to the human mind in the vague and veined labyrinths of their arrangements. They are farther marked as the prepared material for human work by the dependence of their beauty on smoothness of surface; for their veins are usually seen but dimly in the native rock; and the colors they a.s.sume under the action of weather are inferior to those of the crystallines: it is not until wrought and polished by man that they show their character. Finally, they do not decompose. The exterior surface is sometimes destroyed by a sort of mechanical disruption of its outer flakes, but rarely to the extent in which such action takes place in other rocks; and the most delicate sculptures, if executed in good marble, will remain for ages undeteriorated.

-- 3. Quarries of marble are, however, rare, and we owe the greatest part of the good architecture of this world to the more ordinary limestones and sandstones, easily obtainable in blocks of considerable size, and capable of being broken, sawn, or sculptured with ease; the color, generally grey, or warm red (the yellow and white varieties becoming grey with age), being exactly that which will distinguish buildings by an agreeable contrast from the vegetation by which they may be surrounded.

To these inferior conditions of the compact coherence we owe also the greater part of the _pretty_ scenery of the inhabited globe. The sweet winding valleys, with peeping cliffs on either side; the light, irregular wanderings of broken streamlets; the knolls and slopes covered with rounded woods; the narrow ravines, carpeted with greensward, and haunted by traditions of fairy or gnome; the jutting crags, crowned by the castle or watch-tower; the white sea-cliff and sheep-fed down; the long succession of coteau, sunburnt, and bristling with vines,--all these owe whatever they have of simple beauty to the peculiar nature of the group of rocks of which we are speaking; a group which, though occasionally found in mountain ma.s.ses of magnificent form and size, is on the whole characterized by a comparative smallness of scale, and a tendency to display itself less in true mountains than in elevated downs or plains, through which winding valleys, more or less deep, are cut by the action of the streams.

-- 4. It has been said that this group of rocks is distinguished by its incapability of being separated into sheets. This is only true of it in small portions, for it is usually deposited in beds or layers of irregular thickness, which are easily separable from each other; and when, as not unfrequently happens, some of these beds are only half an inch or a quarter of an inch thick, the rock appears to break into flat plates like a slaty coherent. But this appearance is deceptive. However thin the bed may be, it will be found that it is in its own substance compact, and not separable into two other beds; but the true slaty coherents possess a delicate slatiness of structure, carried into their most minute portions, so that however thin a piece of them may be, it is usually possible, if we have instruments fine enough, to separate it into two still thinner flakes. As, however, the slaty and compact crystallines, so also the slaty and compact coherents pa.s.s into each other by subtle gradations, and present many intermediate conditions, very obscure and indefinable.

-- 5. I said just now that the colors of the compact coherents were usually such as would pleasantly distinguish buildings from vegetation.

They are so; but considered as abstract hues, are yet far less agreeable than those of the n.o.bler and older rocks. And it is to be noticed, that as these inferior rocks are the materials with which we usually build, they form the ground of the idea suggested to most men's minds by the word "stone," and therefore the general term "stone-color" is used in common parlance as expressive of the hue to which the compact coherents for the most part approximate. By stone-color I suppose we all understand a sort of tawny grey, with too much yellow in it to be called cold, and too little to be called warm. And it is quite true that over enormous districts of Europe, composed of what are technically known as "Jura" and "mountain" limestones, and various pale sandstones, such is generally the color of any freshly broken rock which peeps out along the sides of their gentler hills. It becomes a little greyer as it is colored by time, but never reaches anything like the n.o.ble hues of the gneiss and slate; the very lichens which grow upon it are poorer and paler; and although the deep wood mosses will sometimes bury it altogether in golden cushions, the minor mosses, whose office is to decorate and chequer the rocks without concealing them, are always more meagrely set on these limestones than on the crystallines.

-- 6. I never have had time to examine and throw into cla.s.ses the varieties of the mosses which grow on the two kinds of rock, nor have I been able to ascertain whether there are really numerous differences between the species, or whether they only grow more luxuriantly on the crystallines than on the coherents. But this is certain, that on the broken rocks of the foreground in the crystalline groups the mosses seem to set themselves consentfully and deliberately to the task of producing the most exquisite harmonies of color in their power. They will not conceal the form of the rock, but will gather over it in little brown bosses, like small cushions of velvet made of mixed threads of dark ruby silk and gold, rounded over more subdued films of white and grey, with lightly crisped and curled edges like h.o.a.r frost on fallen leaves, and minute cl.u.s.ters of upright orange stalks with pointed caps, and fibres of deep green, and gold, and faint purple pa.s.sing into black, all woven together, and following with unimaginable fineness of gentle growth the undulation of the stone they cherish, until it is charged with color so that it can receive no more; and instead of looking rugged, or cold, or stern, as anything that a rock is held to be at heart, it seems to be clothed with a soft, dark leopard skin, embroidered with arabesque of purple and silver. But in the lower ranges this is not so. The mosses grow in more independent spots, not in such a clinging and tender way over the whole surface; the lichens are far poorer and fewer; and the color of the stone itself is seen more frequently; altered, if at all, only into a little chiller grey than when it is freshly broken. So that a limestone landscape is apt to be dull, and cold in general tone, with some aspect even of barrenness. The sandstones are much richer in vegetation: there are, perhaps, no scenes in our own island more interesting than the wooded dingles which traverse them, the red rocks growing out on either side, and shelving down into the pools of their deep brown rivers, as at Jedburgh and Langholme; the steep oak copses climbing the banks, the paler plumes of birch shaking themselves free into the light of the sky above, and the few arches of the monastery where the fields in the glen are greenest, or the stones of the border tower where its cliffs are steepest, rendering both field and cliff a thousandfold more dear to the heart and sight. But deprived of a.s.sociations, and compared in their mere natural beauty with the ravines of the central ranges, there can be no question but that even the loveliest pa.s.sages of such scenery are imperfect and poor in foreground color. And at first there would seem to be an unfairness in this, unlike the usual system of compensation which so often manifests itself throughout nature. The higher mountains have their scenes of power and vastness, their blue precipices and cloud-like snows: why should they also have the best and fairest colors given to their foreground rocks, and overburden the human mind with wonder; while the less majestic scenery, tempting us to the observance of details for which amidst the higher mountains we had no admiration left, is yet, in the beauty of those very details, as inferior as it is in scale of magnitude?

-- 7. I believe the answer must be, simply, that it is not good for man to live among what is most beautiful;--that he is a creature incapable of satisfaction by anything upon earth; and that to allow him habitually to possess, in any kind whatsoever, the utmost that earth can give, is the surest way to cast him into la.s.situde or discontent.

If the most exquisite orchestral music could be continued without a pause for a series of years, and children were brought up and educated in the room in which it was perpetually resounding, I believe their enjoyment of music, or understanding of it, would be very small. And an accurately parallel effect seems to be produced upon the powers of contemplation, by the redundant and ceaseless loveliness of the high mountain districts. The faculties are paralyzed by the abundance, and cease, as we before noticed of the imagination, to be capable of excitement, except by other subjects of interest than those which present themselves to the eye. So that it is, in reality, better for mankind that the forms of their common landscape should offer no violent stimulus to the emotions,--that the gentle upland, browned by the bending furrows of the plough, and the fresh sweep of the chalk down, and the narrow winding of the copse-clad dingle, should be more frequent scenes of human life than the Arcadias of cloud-capped mountain or luxuriant vale; and that, while humbler (though always infinite) sources of interest are given to each of us around the homes to which we are restrained for the greater part of our lives, these mightier and stranger glories should become the objects of adventure,--at once the cynosures of the fancies of childhood, and themes of the happy memory, and the winter's tale of age.

-- 8. Nor is it always that the inferiority is felt. For, so natural is it to the human heart to fix itself in hope rather than in present possession, and so subtle is the charm which the imagination casts over what is distant or denied, that there is often a more touching power in the scenes which contain far-away promise of something greater than themselves, than in those which exhaust the treasures and powers of Nature in an unconquerable and excellent glory, leaving nothing more to be by the fancy pictured, or pursued.

I do not know that there is a district in the world more calculated to ill.u.s.trate this power of the expectant imagination, than that which surrounds the city of Fribourg in Switzerland, extending from it towards Berne. It is of grey sandstone, considerably elevated, but presenting no object of striking interest to the pa.s.sing traveller; so that, as it is generally seen in the course of a hasty journey from the Bernese Alps to those of Savoy, it is rarely regarded with any other sensation than that of weariness, all the more painful because accompanied with reaction from the high excitement caused by the splendor of the Bernese Oberland.

The traveller, footsore, feverish, and satiated with glacier and precipice, lies back in the corner of the diligence, perceiving little more than that the road is winding and hilly, and the country through which it pa.s.ses cultivated and tame. Let him, however, only do this tame country the justice of staying in it a few days, until his mind has recovered its tone, and take one or two long walks through its fields, and he will have other thoughts of it. It is, as I said, an undulating district of grey sandstone, never attaining any considerable height, but having enough of the mountain spirit to throw itself into continual succession of bold slope and dale; elevated, also, just far enough above the sea to render the pine a frequent forest tree along its irregular ridges. Through this elevated tract the river cuts its way in a ravine some five or six hundred feet in depth, which winds for leagues between the gentle hills, unthought of, until its edge is approached; and then suddenly, through the boughs of the firs, the eye perceives, beneath, the green and gliding stream, and the broad walls of sandstone cliff that form its banks; hollowed out where the river leans against them, at its turns, into perilous overhanging, and, on the other sh.o.r.e, at the same spots, leaving little breadths of meadow between them and the water, half-overgrown with thicket, deserted in their sweetness, inaccessible from above, and rarely visited by any curious wanderers along the hardly traceable footpath which struggles for existence beneath the rocks. And there the river ripples, and eddies, and murmurs in an utter solitude. It is pa.s.sing through the midst of a thickly peopled country; but never was a stream so lonely. The feeblest and most far-away torrent among the high hills has its companions: the goats browse beside it; and the traveller drinks from it, and pa.s.ses over it with his staff; and the peasant traces a new channel for it down to his mill-wheel. But this stream has no companions: it flows on in an infinite seclusion, not secret nor threatening, but a quietness of sweet daylight and open air,--a broad s.p.a.ce of tender and deep desolateness, drooped into repose out of the midst of human labor and life; the waves plashing lowly, with none to hear them; and the wild birds building in the boughs, with none to fray them away; and the soft, fragrant herbs rising, and breathing, and fading, with no hand to gather them;--and yet all bright and bare to the clouds above, and to the fresh fall of the pa.s.sing sunshine and pure rain.

-- 9. But above the brows of those scarped cliffs, all is in an instant changed. A few steps only beyond the firs that stretch their branches, angular, and wild, and white, like forks of lightning, into the air of the ravine, and we are in an arable country of the most perfect richness; the swathes of its corn glowing and burning from field to field; its pretty hamlets all vivid with fruitful orchards and flowery gardens, and goodly with steep-roofed storehouse and barn; its well-kept, hard, park-like roads rising and falling from hillside to hillside, or disappearing among brown banks of moss, and thickets of the wild raspberry and rose; or gleaming through lines of tall trees, half glade, half avenue, where the gate opens, or the gateless path turns trustedly aside, unhindered, into the garden of some statelier house, surrounded in rural pride with its golden hives, and carved granaries, and irregular domain of latticed and espaliered cottages, gladdening to look upon in their delicate homeliness--delicate, yet, in some sort, rude; not like our English homes--trim, laborious, formal, irreproachable in comfort; but with a peculiar carelessness and largeness in all their detail, harmonizing with the outlawed loveliness of their country. For there is an untamed strength even in all that soft and habitable land. It is, indeed, gilded with corn and fragrant with deep gra.s.s, but it is not subdued to the plough or to the scythe. It gives at its own free will,--it seems to have nothing wrested from it nor conquered in it. It is not redeemed from desertness, but unrestrained in fruitfulness,--a generous land, bright with capricious plenty, and laughing from vale to vale in fitful fulness, kind and wild; nor this without some sterner element mingled in the heart of it. For along all its ridges stand the dark ma.s.ses of innumerable pines, taking no part in its gladness, a.s.serting themselves for ever as fixed shadows, not to be pierced or banished, even in the intensest sunlight; fallen flakes and fragments of the night, stayed in their solemn squares in the midst of all the rosy bendings of the orchard boughs, and yellow effulgence of the harvest, and tracing themselves in black network and motionless fringes against the blanched blue of the horizon in its saintly clearness. And yet they do not sadden the landscape, but seem to have been set there chiefly to show how bright everything else is round them; and all the clouds look of purer silver, and all the air seems filled with a whiter and more living sunshine, where they are pierced by the sable points of the pines; and all the pastures look of more glowing green, where they run up between the purple trunks: and the sweet field footpaths skirt the edges of the forest for the sake of its shade, sloping up and down about the slippery roots, and losing themselves every now and then hopelessly among the violets, and ground ivy, and brown sheddings of the fibrous leaves; and, at last, plunging into some open aisle where the light through the distant stems shows that there is a chance of coming out again on the other side; and coming out, indeed, in a little while, from the scented darkness, into the dazzling air and marvellous landscape, that stretches still farther and farther in new wilfulness of grove and garden, until, at last, the craggy mountains of the Simmenthal rise out of it, sharp into the rolling of the southern clouds.

-- 10. I believe, for general development of human intelligence and sensibility, country of this kind is about the most perfect that exists.

A richer landscape, as that of Italy, enervates, or causes wantonness; a poorer contracts the conceptions, and hardens the temperament of both mind and body; and one more curiously or prominently beautiful deadens the sense of beauty. Even what is here of attractiveness,--far exceeding, as it does that of most of the thickly peopled districts of the temperate zone,--seems to act harmfully on the poetical character of the Swiss; but take its inhabitants all in all, as with deep love and stern penetration they are painted in the works of their princ.i.p.al writer, Gotthelf, and I believe we shall not easily find a peasantry which would completely sustain comparison with them.

-- 11. But be this as it may, it is certain that the compact coherent rocks are appointed to form the greatest part of the earth's surface, and by their utility, and easily changed and governed qualities, to tempt man to dwell among them; being, however, in countries not definitely mountainous, usually covered to a certain depth by those beds of loose gravel and sand to which we agreed to give the name of diluvium. There is nothing which will require to be noted respecting these last, except the forms into which they are brought by the action of water; and the account of these belongs properly to the branch of inquiry which follows next in the order we proposed to ourselves, namely, that touching the sculpture of mountains, to which it will be best to devote some separate chapters; this only being noted in conclusion respecting the various rocks whose nature we have been describing, that out of the entire series of them we may obtain almost every color pleasant to human sight, not the less so for being generally a little softened or saddened. Thus we have beautiful subdued reds, reaching tones of deep purple, in the porphyries, and of pale rose color, in the granites; every kind of silvery and leaden grey, pa.s.sing into purple, in the slates; deep green, and every hue of greenish grey, in the volcanic rocks and serpentines; rich orange, and golden brown, in the gneiss; black, in the lias limestones; and all these, together with pure white, in the marbles. One color only we hardly ever get in an exposed rock--that dull _brown_ which we noticed above, in speaking of color generally, as the most repulsive of all hues; every approximation to it is softened by nature, when exposed to the atmosphere, into a purple grey. All this can hardly be otherwise interpreted, than as prepared for the delight and recreation of man; and I trust that the time may soon come when these beneficent and beautiful gifts of color may be rightly felt and wisely employed, and when the variegated fronts of our houses may render the term "stone-color" as little definite in the mind of the architect as that of "flower-color" would be to the horticulturist.

CHAPTER XII.

ON THE SCULPTURE OF MOUNTAINS:--FIRST, THE LATERAL RANGES.

-- 1. Close beside the path by which travellers ascend the Montanvert from the valley of Chamouni, on the right hand, where it first begins to rise among the pines, there descends a small stream from the foot of the granite peak known to the guides as the Aiguille Charmoz. It is concealed from the traveller by a thicket of alder, and its murmur is hardly heard, for it is one of the weakest streams of the valley. But it is a constant stream; fed by a permanent though small glacier, and continuing to flow even to the close of the summer, when more copious torrents, depending only on the melting of the lower snows, have left their beds "stony channels in the sun."

I suppose that my readers must be generally aware that glaciers are ma.s.ses of ice in slow motion, at the rate of from ten to twenty inches a day, and that the stones which are caught between them and the rocks over which they pa.s.s, or which are embedded in the ice and dragged along by it over those rocks, are of course subjected to a crushing and grinding power altogether unparalleled by any other force in constant action. The dust to which these stones are reduced by the friction is carried down by the streams which flow from the melting glacier, so that the water which in the morning may be pure, owing what little strength it has chiefly to the rock springs, is in the afternoon not only increased in volume, but whitened with dissolved dust of granite, in proportion to the heat of the preceding hours of the day, and to the power and size of the glacier which feeds it.

-- 2. The long drought which took place in the autumn of the year 1854, sealing every source of waters except these perpetual ones, left the torrent of which I am speaking, and such others, in a state peculiarly favorable to observance of their _least_ action on the mountains from which they descend. They were entirely limited to their own ice fountains, and the quant.i.ty of powdered rock which they brought down was, of course, at its minimum, being nearly unmingled with any earth derived from the dissolution of softer soil, or vegetable mould, by rains.

At three in the afternoon, on a warm day in September, when the torrent had reached its average maximum strength for the day, I filled an ordinary Bordeaux wine-flask with the water where it was least turbid.

From this quart of water I obtained twenty-four grains of sand and sediment, more or less fine. I cannot estimate the quant.i.ty of water in the stream; but the runlet of it at which I filled the flask was giving about two hundred bottles a minute, or rather more, carrying down therefore about three quarters of a pound of powdered granite every minute. This would be forty-five pounds an hour; but allowing for the inferior power of the stream in the cooler periods of the day, and taking into consideration, on the other side, its increased power in rain, we may, I think, estimate its average hour's work at twenty-eight or thirty pounds, or a hundred weight every four hours. By this insignificant runlet, therefore, some four inches wide and four inches deep, rather more than two tons of the substance of the Mont Blanc are displaced, and carried down a certain distance every week; and as it is only for three or four months that the flow of the stream is checked by frost, we may certainly allow eighty tons for the ma.s.s which it annually moves.

-- 3. It is not worth while to enter into any calculation of the relation borne by this runlet to the great torrents which descend from the chain of Mont Blanc into the valley of Chamouni. To call it the thousandth part of the glacier waters, would give a ludicrous under-estimate of their total power; but even so calling it, we should find for result that eighty thousand tons of mountain must be yearly transformed into drifted sand, and carried down a certain distance.[49] How much greater than this is the actual quant.i.ty so transformed I cannot tell; but take this quant.i.ty as certain, and consider that this represents merely the results of the labor of the constant summer streams, utterly irrespective of all sudden falls of stones and of ma.s.ses of mountain (a single thunderbolt will sometimes leave a scar on the flank of a soft rock, looking like a trench for a railroad); and we shall then begin to apprehend something of the operation of the great laws of change, which are the conditions of all material existence, however apparently enduring. The hills, which, as compared with living beings, seem "everlasting," are, in truth, as perishing as they: its veins of flowing fountain weary the mountain heart, as the crimson pulse does ours; the natural force of the iron crag is abated in its appointed time, like the strength of the sinews in a human old age; and it is but the lapse of the longer years of decay which, in the sight of its Creator, distinguishes the mountain range from the moth and the worm.

-- 4. And hence two questions arise of the deepest interest. From what first created forms were the mountains brought into their present condition? into what forms will they change in the course of ages? Was the world anciently in a more or less perfect state than it is now? was it less or more fitted for the habitation of the human race? and are the changes which it is now undergoing favorable to that race or not? The present conformation of the earth appears dictated, as has been shown in the preceding chapters, by supreme wisdom and kindness. And yet its former state must have been different from what it is now; as its present one from that which it must a.s.sume hereafter. Is this, therefore, the earth's prime into which we are born; or is it, with all its beauty, only the wreck of Paradise?

I cannot entangle the reader in the intricacy of the inquiries necessary for anything like a satisfactory solution of these questions. But, were he to engage in such inquiries, their result would be his strong conviction of the earth's having been brought from a state in which it was utterly uninhabitable into one fitted for man;--of its having been, when first inhabitable, more beautiful than it is now; and of its gradually tending to still greater inferiority of aspect, and unfitness for abode.

It has, indeed, been the endeavor of some geologists to prove that destruction and renovation are continually proceeding simultaneously in mountains as well as in organic creatures; that while existing eminences are being slowly lowered, others, in order to supply their place, are being slowly elevated; and that what is lost in beauty or healthiness in one spot is gained in another. But I cannot a.s.sent to such a conclusion.

Evidence altogether incontrovertible points to a state of the earth in which it could be tenanted only by lower animals, fitted for the circ.u.mstances under which they lived by peculiar organizations. From this state it is admitted gradually to have been brought into that in which we now see it; and the circ.u.mstances of the existing dispensation, whatever may be the date of its endurance, seem to me to point not less clearly to an end than to an origin; to a creation, when "the earth was without form and void," and to a close, when it must either be renovated or destroyed.

-- 5. In one sense, and in one only, the idea of a continuous order of things is admissible, in so far as the phenomena which introduced, and those which are to terminate, the existing dispensation, may have been, and may in future be, nothing more than a gigantic development of agencies which are in continual operation around us. The experience we possess of volcanic agency is not yet large enough to enable us to set limits to its force; and as we see the rarity of subterraneous action generally proportioned to its violence, there may be appointed, in the natural order of things, convulsions to take place after certain epochs, on a scale which the human race has not yet lived long enough to witness. The soft silver cloud which writhes innocently on the crest of Vesuvius, rests there without intermission; but the fury which lays cities in sepulchres of lava bursts forth only after intervals of centuries; and the still fiercer indignation of the greater volcanoes, which make half the globe vibrate with earthquake, and shrivels up whole kingdoms with flame, is recorded only in dim distances of history: so that it is not irrational to admit that there may yet be powers dormant, not destroyed, beneath the apparently calm surface of the earth, whose date of rest is the endurance of the human race, and whose date of action must be that of its doom. But whether such colossal agencies are indeed in the existing order of things or not, still the effective truth, for us, is one and the same. The earth, as a tormented and trembling ball, may have rolled in s.p.a.ce for myriads of ages before humanity was formed from its dust; and as a devastated ruin it may continue to roll, when all that dust shall again have been mingled with ashes that never were warmed by life, or polluted by sin. But for us the intelligible and substantial fact is that the earth has been brought, by forces we know not of, into a form fitted for our habitation: on that form a gradual, but destructive, change is continually taking place, and the course of that change points clearly to a period when it will no more be fitted for the dwelling-place of men.

-- 6. It is, therefore, not so much what these forms of the earth actually are, as what they are continually becoming, that we have to observe; nor is it possible thus to observe them without an instinctive reference to the first state out of which they have been brought. The existing torrent has dug its bed a thousand feet deep. But in what form was the mountain originally raised which gave that torrent its track and power? The existing precipice is wrought into towers and bastions by the perpetual fall of its fragments. In what form did it stand before a single fragment fell?

Yet to such questions, continually suggesting themselves, it is never possible to give a complete answer. For a certain distance, the past work of existing forces can be traced; but there gradually the mist gathers, and the footsteps of more gigantic agencies are traceable in the darkness; and still, as we endeavor to penetrate farther and farther into departed time, the thunder of the Almighty power sounds louder and louder; and the clouds gather broader and more fearfully, until at last the Sinai of the world is seen altogether upon a smoke, and the fence of its foot is reached, which none can break through.

-- 7. If, therefore, we venture to advance towards the spot where the cloud first comes down, it is rather with the purpose of fully pointing out that there is a cloud, than of entering into it. It is well to have been fully convinced of the existence of the mystery, in an age far too apt to suppose that everything which is visible is explicable, and everything that is present, eternal. But besides ascertaining the existence of this mystery, we shall perhaps be able to form some new conjectures respecting the facts of mountain aspects in the past ages.

Not respecting the processes or powers to which the hills owe their origin, but respecting the aspect they first a.s.sumed.

-- 8. For it is evident that, through all their ruin, some traces must still exist of the original contours. The directions in which the ma.s.s gives way must have been dictated by the disposition of its ancient sides; and the currents of the streams that wear its flanks must still, in great part, follow the course of the primal valleys. So that, in the actual form of any mountain peak, there must usually be traceable the shadow or skeleton of its former self; like the obscure indications of the first frame of a war-worn tower, preserved, in some places, under the heap of its ruins, in others to be restored in imagination from the thin remnants of its tottering sh.e.l.l; while here and there, in some sheltered spot, a few unfallen stones retain their Gothic sculpture, and a few touches of the chisel, or stains of color, inform us of the whole mind and perfect skill of the old designer. With this great difference, nevertheless, that in the human architecture the builder did not calculate upon ruin, nor appoint the course of impendent desolation; but that in the hand of the great Architect of the mountains, time and decay are as much the instruments of His purpose as the forces by which He first led forth the troops of hills in leaping flocks:--the lightning and the torrent, and the wasting and weariness of innumerable ages, all bear their part in the working out of one consistent plan; and the Builder of the temple for ever stands beside His work, appointing the stone that is to fall, and the pillar that is to be abased, and guiding all the seeming wildness of chance and change, into ordained splendors and foreseen harmonies.

-- 9. Mountain ma.s.ses, then, considered with respect to their first raising and first sculpture, may be conveniently divided into two great groups; namely, those made up of beds or layers, commonly called stratified; and those made of more or less united substance, called unstratified. The former are nearly always composed of coherent rocks, the latter of crystallines; and the former almost always occupy the outside, the latter the centre of mountain chains. It signifies, therefore, very little whether we distinguish the groups by calling one stratified and the other unstratified, or one "coherent" and the other "crystalline," or one "lateral" and the other "central." But as this last distinction in position seems to have more influence on their forms than either of the others, it is, perhaps, best, when we are examining them in connection with art, that this should be thoroughly kept in mind; and therefore we will consider the first group under the t.i.tle of "lateral ranges," and the second under that of "central peaks."

[Ill.u.s.tration: FIG. 8.]

-- 10. The LATERAL RANGES, which we are first to examine, are, for the most part, broad tabular ma.s.ses of sandstone, limestone, or whatever their material may be,--tilted slightly up over large s.p.a.ces (several or many miles square), and forming precipices with their exposed edges, as a book resting obliquely on another book forms miniature precipices with its back and sides. The book is a tolerably accurate representation of the mountain in substance, as well as in external aspect; nearly all these tabular ma.s.ses of rock being composed of a mult.i.tude of thinner beds or layers, as the thickness of the book is made up of its leaves; while every one of the mountain leaves is usually written over, though in dim characters, like those of a faded ma.n.u.script, with history of departed ages.

"How were these mountain volumes raised, and how are they supported?"

are the natural questions following such a statement.

And the only answer is: "Behold the cloud."

No eye has ever seen one of these raised on a large scale; no investigation has brought completely to light the conditions under which the materials which support them were prepared. This only is the simple fact, that they _are_ raised into such sloping positions; generally several resting one upon another, like a row of books fallen down (Fig.

8); the last book being usually propped by a piece of formless compact crystalline rock, represented by the piece of crumpled paper at _a_.

[Ill.u.s.tration: FIG. 9.]