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. [20] I have slightly modified and abridged what follows, being impatient of its prolixity, as well as ashamed of what is truly called the ludicrous under-estimate of the mass of the larger streams. 31. Few people, comparatively, have ever seen the effect on the sea of a powerful gale continued without intermission for three or four days and nights; and to those who have not, I believe it must be unimaginable, not from the mere force or size of surge, but from the complete annihilation of the limit between sea and air. The water, from its prolonged agitation, is beaten, not into mere creamy foam, but into masses of accumulated yeast, which hang in ropes and wreaths from wave to wave; and where one curls over to break, form a festoon like a drapery from its edge; these are taken up by the wind, not in dissipating dust, but bodily, in writhing, hanging, coiling masses, which make the air white, and thick as with snow, only the flakes are a foot or two long each; the surges themselves are full of foam in their very bodies, underneath, making them white all through, as the water is under a great cataract,--and their masses, being thus half water and half air, are torn to pieces by the wind whenever they rise, and carried away in roaring smoke, which chokes and strangles like actual water. Add to this, that when the air has been exhausted of its moisture by long rain, the spray of the sea is caught by it as described above, and covers its surface not merely with the smoke of finely divided water, but with boiling mist: imagine also the low rain-clouds brought down to the very level of the sea, as I have often seen them, whirling and flying in rags and fragments from wave to wave; and finally conceive the surges themselves in their utmost pitch of power, velocity, vastness, and madness, lifting themselves in precipices and peaks furrowed with their whirl of ascent, through all this chaos; and you will understand that there is indeed no distinction left between the sea and air; that no object, nor horizon, nor any landmark, or natural evidence of position is left; that the heaven is all spray, and the ocean all cloud, and that you can see no farther in any direction than you could see through a cataract.[21]