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

by Agnes M. Clerke

[843] Month. Not., vol. lvii., p. 402; Astr. Nach., No. 3,406.

[844] Mem. Spettroscopisti Italiani, t. xxv., p. 93; Nature, vol. liii., p. 306.

[845] Astr. Nach., No. 3,329.

[846] Ibid.

[847] Bull. de l'Acad. de Belgique, t. xxi., p. 452, 1891.

[848] Observations sur les Planètes Vénus et Mercure, 1892.

[849] Astr. Nach., No. 3,300.

[850] Ibid., No. 3,332.

[851] Ibid., No. 3,314.

[852] Ibid., No. 3,170.