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Show Iceberg Dnt. One of tlie mot Interesting contributions contri-butions of Prof. Xordeuskjold to popular science Is his examination when stout S) degrees north latitude, lati-tude, before reaching Parry's Island, to the uorihu est of Spitsbergen of the snow which covered the Icebergs Ice-bergs and which had come from still higher latitudes. Hefoundltslre-ii with a multitude of minute black particle--, spread over the surface or situated at the bottom of little pits, a great number of which Were to be seen 011 thu outer layer of snow; many of such partlciej were also lodged in tlie low erstrato. Thedust, which became gray ou drying, the professor found to contain a large proportion of metallic articles attracted at-tracted by the magnet aud capable of decomprcing sulphate of cop;er. An olwrvatlon made a little latter on other icebergs proved the presence of similar dust in a layer of granular crystalline snow situated beneath a stratum of light fresh snow and another of hardt net! show. Upon analysis Prof. Nonleuskjold found this matter to be competed lu varying vary-ing proportions of metallic iron, phosphorus, cobalt and fragments of dlatomnccK-. Ex. |