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Imp. de St. Pétersbourg, t. vi., col. 77. Von Dr. Nach., No. 3,267; Observatory, vol. xviii., p. 64; F. H. Seares, Astr. Corr., vol. xxv., pp. 3-22. Reprinted by Zöllner. See Bull. R. A. S., vol. x., p. 376. Rosenberger calculated no more, though he lived until 1890. Month. Report. Brit. Imp. de St. Stars seen through the tail, October 18, lost much of their lustre.
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