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Scientific American, Vol. 81, No. 23 (1899) (1899)

leaf 7

An illustration from Scientific American, Vol. 81, No. 23 (1899), 1899, leaf 7
rred, but occurs gradually. It would be entirely different if we should fasten a curious and interesting applications may be made. It Experiment with Hydrosulphuric Acid.—Some hy- is almost without a rival for the study of atmospheric string tothe handle of an umbrella and present the drosulphuric… … Fig. 5.PREPARATION OF NITROGEN. © 1899 SCIENTIFIC AMERICAN, INC.

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