A Popular History of Astronomy During the Nineteenth Century / Fourth Edition

by Agnes M. Clerke

[260] D'Arrest, Astr. Nach., No. 1,624.

[261] Der Brorsen'sche Comet. Von Dr. E. Lamp, Kiel, 1892; Plummer, Knowledge, vol. xix., p. 41.

[262] Schulhof, Astr. Nach., No. 3,267; Observatory, vol. xviii., p. 64; F. H. Seares, Astr. Nach., Nos. 3,606-7; Plummer, Knowledge, vol. xix., p. 156.

[263] Comptes Rendus, t. xxv., p. 570.

[264] Month. Not., vol. xii., p. 248.

[265] Bull. Astr., t. vi., pp. 241, 289.

[266] Étude sur la Théorie des Comètes périodiques. Annales de l'Observatoíre, t. xx., Paris, 1891.

[267] Amer. Journ. of Science, vol. xlii., pp. 183, 482, 1891.

[268] Observatory, vol. xiv., p. 194.

[269] Phil. Trans., vol. cii., pp. 118-124.