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

by Agnes M. Clerke

[1287] Ueber die Kometen von 371 v. Chr., 1668, 1843, I. und 1880 I. Göttingen, 1880.

[1288] Meteor., lib. i., cap. 6.

[1289] Mém. Soc. Phys. de Genève, t. xxviii., p. 23.

[1290] Annales de l'Obs. de Moscou, t. vii., pt. i., p. 60.

[1291] Brédikhine, Annales, t. viii., p. 68.

[1292] Am. Jour. of Sc., vol. xxii., p. 305.

[1293] Messrs. Burton and Green observed a dilatation of the stellar image into a nebulous patch by the transmission of its rays through a nuclear jet of the comet. Am. Jour. of Sc., vol. xxii., p. 163.

[1294] Archives des Sciences, t. viii., p. 535. Cf. Perrine's negative results for Swift's comet in 1899, Astr. Nach., No. 3,602.

[1295] Riem concluded in 1896 for a definitive period of 2,429 years; Observatory, vol. xix., p. 282.

[1296] Holden, Publ. Astr. Pac. Soc., vol. ix., p. 89.