Abstract
I SEE that it is sometimes permitted to ask questions in NATURE for information. If I might be allowed to do so, I would ask why common salt gives a blue light when cast into a fire of coal, and a yellow light when burned on the wick of a spirit lamp? The books I have consulted do not give the reason of this.
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G., E. The Flame of Common Salt. Nature 13, 287 (1876). https://doi.org/10.1038/013287c0
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DOI: https://doi.org/10.1038/013287c0
