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doi: 10.1038/034570a0
THE article upon this subject in NATURE, vol. xxxiv. p. 439, requires a correction which has been pointed out by Dr. Copeland. The spectrum of the star DM. + 37° 3821 was observed by him on September 22, 1884, and found to contain bright lines; the observation was published in the Monthly Notices for December 1884, but was overlooked at the time when the article above mentioned was prepared.
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