Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 160
ich appear in the spectrum of the chromo-sphere and prominences. The same gas has since been found in anumber of other minerals and in meteoric iron. Its density turns outto be about double that of hydrogen, but less than that of anyother known element. Chemically it is extremely inert, refusing…
Astronomy · Constellations
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