"What happens when iron changes to rust? A small muslin bag is filled with iron-filings which have been thoroughly wetted with water; the bag is hung on a stand and the stand is placed in a basin containing water, and is covered with a glass cylinder. An examination of the apparatus after 24 hours or so shows that the water has risen about one-fifth of the distance from the lower to the upper end of the glass cylinder, and the iron-filings are covered with rust. The air which now remains in the cylinder is about four fifths of the volume of the air which was in the cylinder when the experiment began. The air in the cylinder is transferred to a smaller cylinder of glass (standing in water) wherein wetted iron filings, free from rust have been placed; the water does not rise in the second cylinder, nor does the iron rust, even after several days. ...by inverting the second cylinder, and plunging a lighted taper into it; the taper is extinguished; but if the same taper is lighted, and plunged into a similar cylinder full of ordinary air, it continues to burn."
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The Elements of Chemistry (Muir)
The Elements of Chemistry was written by Matthew Moncrieff Pattison Muir and published in 1904. Muir was a Praelector and Fellow of Gonville and Caius College, Cambridge and head of their Caius Laboratory.
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