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Pierre Jean Édouard Desor

Pierre Jean Édouard Desor (13 February 1811, Friedrichsdorf, Grand Duchy of Hesse – 23 February 1882) was a German-Swiss geologist and naturalist.

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He was in a guided party on the first ascent of the Lauteraarhorn on 8 August 1842 and of the Rosenhorn summit of the Wetterhorn on 28 August 1844.

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After spending a few years in the north of Europe, especially in Scandinavia, investigating the erratic phenomena peculiar to that region, Desor accompanied Agassiz in 1847 to the United States, found employment in the coast survey, and made with Whitney, Foster, and Rogers a geological survey of the mineral district of Lake Superior.

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