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

by Agnes M. Clerke

[873] Comptes Rendus, t. cxvi., p. 288.

[874] Vogel, Spectra der Planeten, p. 15.

[875] Nature, vol. xix., p. 23.

[876] Nova Acta Acad. Naturæ Curiosorum, Bd. x., 239.

[877] Astr. Jahrbuch, 1809, p. 164.

[878] Month Not., vol. xliii., p. 331.

[879] Report Brit. Ass., 1873, p. 407. The paper contains a valuable record of observations of the phenomenon.

[880] Photom. Untersuchungen, p. 301.

[881] Bothkamp Beobachtungen, Heft ii., p. 126.

[882] Astr. Nach., No. 2,818.