| "I remember once, when in crossing the Tête Noire, I had turned up the  valley towards Trient, I noticed a rain-cloud form on the Glacier de  Trient. With a west wind, it proceeded towards the Col de Balme, being  followed by a prolonged wreath of vapour, always forming exactly at the  same spot over the glacier. This long, serpent-like line of cloud went  on at a great rate till it reached the valley leading down from the Col  de Balme, under the slate rocks of the Croix de Fer. There it turned  sharp round, and came down this valley, at right angles to its former  progress, and finally directly contrary to it, till it came down within  five hundred feet of the village, where it disappeared; the line behind  always advancing, and always disappearing at the same spot. This  continued for half an hour, the long line describing the curve of a  horse-shoe; always coming into existence and always vanishing at  exactly the same places; traversing the space between with enormous  swiftness. This cloud, ten miles off, would have looked like a  perfectly motionless wreath, in the form of a horse-shoe, hanging over  the hills."  From Modern Painters,  vol. 1 (1843) by John Ruskin. |