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

by Agnes M. Clerke

[813] Neueste Beyträge, Bd. iii., p. 50.

[814] Astr. Jahrbuch, 1804, pp. 97-102.

[815] Webb, Celestial Objects, p. 46 (4th ed.).

[816] L'Astronomie, t. ii., p. 141.

[817] Observations sur les Planètes Vénus et Mercure, p. 87.

[818] Observatory, vol. vi., p. 40.

[819] Atti dell' Accad. dei Lincei, t. v. ii., p. 283, 1889; Astr. Nach., No. 2,944.

[820] Astr. Nach. No. 2,479.

[821] Memoirs Amer. Acad., vol. xii., No. 4, p. 464.

[822] Hist. de l'Astr., p. 682.