Abstract
THE accompanying photograph shows a form of frost not, I believe, usually seen except at a comparatively high altitude and unsheltered position. This photograph was taken on April 22 near the summit of Carnedd Llewelyn, N. Wales (3484 feet above sea-level). These delicate frost “feathers” appear gradually to grow outwards from the rock face on the windward side, and the delicacy of their form is, no doubt, modified-in some degree with the varying rate of the wind and the temperature. I have found, in the same district, these “feathers” 9 inches from root to tip; those shown are about 6 inches long. They form a comparatively solid mass where they touch, but the tips keep distinct, and the whole mass is in reality very brittle, and easily breaks up into small pieces.
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References
Dutton, "Earthquakes in the Light of the New Seismology," p. 137; Davison, "A Study of Recent Earthquakes," p. 280.
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WARNER, H. A Feather-like Form of Frost. Nature 72, 80 (1905). https://doi.org/10.1038/072080b0
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DOI: https://doi.org/10.1038/072080b0
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