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no single part nor portion of the whole sky which has not in itself variety of color enough for a separate picture, and yet no single part which is like another, or which has not some peculiar source of beauty, and some peculiar arrangement of color of its own.

THE CENTRAL CLOUD REGION,

I CoNSIDER as including all clouds which are the usual characteristic of ordinary serene weather, and which touch and envelope the mountains of Switzerland; they may be considered as occupying a space of air ten thousand feet in height. extending from five to fifteen thousand feet above the sea.

These clouds, according to their elevation, appear with great variety of form, often partaking of the streaked or mottled character of the higher region, and as often, when the precursors of storm, manifesting forms closely connected with the lowest rain clouds; but the species especially characteristic of the central region is a white, ragged, irregular, and scattered vapor, which has little form and less color.

But although this kind of cloud is, as I have said, typical of the central region, it is not one which nature is fond of. She scarcely ever lets an hour pass without some manifestation of finer forms, sometimes approaching the upper cirri, sometimes the lower cumulus. And then in the lower outlines, we have the nearest approximation which nature even presents to the clouds of Claude, Salvator, and Poussin. When vapor collects into masses, it is partially rounded, clumsy, and ponderous, as if it would tumble out of the sky, shaded with a dull gray, and totally devoid of any appear

ance of energy or motion. Even in nature, these clouds are comparatively uninteresting, scarcely worth raising our heads to look at; and on canvas, valuable only as a means of introducing light, and breaking the monotony of blue; yet they are, perhaps, beyond all others the favorite clouds of the Dutch masters. The originality and vigor of separate conception in cloud forms, give to the scenery of the sky a force and variety no less delightful than that of the changes of mountain outline in a hill district of great elevation; and there is added to this a spirit-like feeling, a capricious, mocking imagery of passion and life, totally different from any effects of inanimate form that the earth can show. The minor contours, out of which the larger outlines are composed, are indeed beautifully curvilinear; but they are never monotonous in their curves. First comes a concave line, then a convex one, then an angular jag, breaking off into spray, then a downright straight line, then a curve again, then a deep gap, and a place where all is lost and melted away, and so on; displaying in every inch of the form renewed and ceaseless invention, setting off grace with rigidity, and relieving flexibility with force, in a manner scarcely less admirable, and far more changeful than even in the muscular forms of the human frame. Nay, such is the exquisite composition of all this, that you may take any single fragment of any cloud in the sky, and you will find it put together as if there had been a year's thought over the plan of it, arranged with the most studied inequality—with the most delicate symmetry—with the most elaborate contrast, a picture in itself. You may try every other piece of cloud in the heaven, and you will find them every one as perfect, and yet not one in the least like another. When rain falls on a mountain composed chiefly of barren rocks, their surfaces, being violently heated by the sun, whose most intense warmth always precedes rain, occasion sudden and violent evaporation, actually converting the first shower into steam. Consequently, upon all such hills, on the commencement of rain, white volumes of vapor are instantaneously and universally formed, which rise, are absorbed by the atmosphere, and again descend in rain, to rise in fresh volumes until the surfaces of the hills are cooled. Where there is grass or vegetation, this effect is diminished; where there is foliage it scarcely takes place at all. Now this effect has evi. dently been especially chosen by Turner for Loch Coriskin, not only because it enabled him to relieve its jagged forms with veiling vapor, but to tell the tale which no pencilling could, the story of its utter absolute barrenness of unlichened, dead, desolate rock:—

“The wildest glen, but this, can show
Some touch of nature's genial glow,
On high Benmore green mosses grow
And heath-bells bud in deep Glencoe.
And copse on Cruchan Ben;
But here, above, around, below,
On mountain, or in glen,
Nor tree, nor plant, nor shrub, nor flower,
Nor ought of vegetative power,
The wearied eye may ken;
But all its rocks at random thrown,
Black waves, bare crags, and banks of stone.'

LORD OF THE ISLES, Canto III.

“Be as a Presence or a motion—one
Among the many there—while the mists
Flying, and rainy vapors, call out shapes
And phantoms from the crags and solid earth,
As fast as a musician scatters sounds
Out of an instrument.”-

Stand upon the peak of some isolated mountain at day . break, when the night-mists first rise from off the plains, and watch their white and lake-like fields as they float in level bays and winding gulphs about the islanded summits of the lower hills, untouched yet by more than dawn, colder and more quiet than a windless sea under the moon of midnight. Watch when the first sunbeam is sent upon the silver channels, how the foam of their undulating surface parts and passes away; and down under their depths the glittering city and green pasture lie like Atlantis, between the white paths of winding rivers; the flakes of light falling every moment faster and broader among the starry spires, as the wreathed surges break and vanish above them, and the confused crests and ridges of the dark hills shorten their gray shadows upon the plain. Wait a little longer, and you shall see those scattered mists rallying in the ravines and floating up towards you, along the winding valleys, till they couch in quiet masses, iridescent with the morning light, upon the broad breasts of the higher hills, whose leagues of massy undulation will melt back and back into that robe of material light, until they fade away, lost in its lustre, to appear again above, in the serene heaven, like a wild, bright, impossible dream, foundationless and inaccessible, their very bases vanishing in the unsubstantial and mocking blue of the deep lake below. Wait yet a little longer, and you shall see those mists gather themselves into white towers, and stand like fortresses along the promontories, massy and motionless, only piling with every instant higher and higher into the sky, and casting longer shadows athwart the rocks; and out of the pale blue of the horizon you will see forming and advancing a troop of narrow, dark, pointed vapors, which will cover the sky, inch by inch, with their gray network, and take the light off the landscape with an eclipse which will stop the singing of the birds and the

motion of the leaves together; and then you will see horizon. tal bars of black shadow forming under them, and lurid wreaths create themselves, you know not how, along the shoulders of the hills; you never see them form, but when you look back to a place which was clear an instant ago, there is a cloud on it, hanging by the precipices, as a hawk pauses over his prey. And then you will hear the sudden rush of the awakened wind, and you will see those watch-towers of vapor swept away from their foundations, and waving curtains of opaque rain let down to the valleys, swinging from the bur dened clouds in black, bending fringes, or pacing in pale columns along the lake level, grazing its surface into foam as they go. And then, as the sun sinks, you shall see the storm drift for an instant from off the hills, leaving their broad sides smoking, and loaded yet with snow-white, torn, steam-like rags of capricious vapor, now gone, now gathered again; while the smouldering sun, seeming not far away, but burning like a red-hot ball beside you, and as if you could reach it, plunges through the rushing wind and rolling cloud with headlong fall, as if it meant to rise no more, dyeing all the air about it with blood. And then you shall hear the fainting tempest die in the hollow of the night, and you shall see a green halo kindling on the summit of the eastern hills, brighter—brighter yet, till the large white circle of the slow moon is lifted up among the barred clouds, step by step, line by line; star after star she quenches with her kindling light, setting in their stead an army of pale, penetrable, fleecy wreaths in the heaven, to give light upon the earth, which move together, hand in hand, company by company, troop by troop, so measured in their unity of motion, that the whole heaven seems to roll with them, and the earth to reel under them. And then wait yet for one hour, until the east again becomes purple, and the heaving mountains, rolling against it in darkness, like waves

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