Abstract
I WISH to make a correction with reference to my observations on the spectrum of the aurora, as given by J. R. Capron on p. 182; for he has credited them with greater accuracy than they profess to have: I have no doubt that my line No. 5, seen at wave-length 500 or 510, is the same as Lord Lindsay's and Elger's No. 4, and probably as Procter's. This is the more likely, seeing that the two former placed the principal line much nearer the red end than I did; for I assumed Angström's position (5567) to be correct. This leaves but one observer of No. 5 (Barker), and possibly his line also is the same; in that case his No. 4 will be the same as Lord Lindsay's No. 3.
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BACKHOUSE, T. Spectrum of Aurora. Nature 7, 463 (1873). https://doi.org/10.1038/007463b0
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DOI: https://doi.org/10.1038/007463b0
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