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From the December 1910 issue of The Christian Science Journal

IN the Sunday edition of an eastern paper there appeared recently a very interesting article under the caption, "Making Darkness out of Daylight. " It was given with instructions for experiment somewhat as follows: Procure a wooden box, cover one side with glass, also make a small glass window in each end, and by a simple chemical process (which it is unnecessary to give here) extract all foreign matter from the air in the box.

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