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

by Agnes M. Clerke

[101] Astr. Nach., Nos. 1371-1373.

[102] Ueber die Doppelsterne, Bericht, 1827, p. 22.

[103] Ueber die Doppelsterne, Bericht, 1827, p. 25.

[104] Mensuræ Micr., p. xcix.

[105] Stellarum Fixarum imprimis Duplicium et Multiplicum Positiones Mediæ, pp. cxc., cciii.

[106] For instance, the southern stars, 36A Ophiuchi (itself double) and 30 Scorpii, which are 12′ 10″ apart. Ibid., p. cciii.

[107] Stellarum Fixarum, etc., p. ccliii.

[108] Études d'Astronomie Stellaire, 1847, p. 82.

[109] Ibid., p. 86.

[110] See Encke's criticism in Astr. Nach., No. 622.