Red Dust of Doubtful Origin

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ON Tuesday morning, March 22, I noticed on the glass of our greenhouses, and on many of the shrubs, a sort of red dust. On making inquiries I found the same thing existed about two miles off, due west. I collected some, and, by the kindness of one of the directors of Messrs. Brunner, Mond, and Co., it was examined in the laboratory connected with their works. To-day I got the report, which is as follows:—

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