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<p>The arc spectra of gadolinium and dysprosium were measured from  lambda 5500 to approximately  lambda 9000, using spectrograms prepared by the author and also by Eder. The sources were gadolinium oxide and dysprosium oxalate. Most of the lines are faint, and several suggest band-heads. The lines given amount to 950 for Gd, and 800 lines for Dy.
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<br>Subjects:</div>
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Kiess, C.C.</div>
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