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

by Agnes M. Clerke

[1091] Month. Not., vol. xxxi., p. 34.

[1092] Beobachtungen, Heft ii., p. 99.

[1093] Ber. Sächs. Ges. der Wiss., 1871, p. 553.

[1094] Month. Not., vol. lix., p. 76.

[1095] Beziehungen der Sonnenfleckenperiode, p. 175.

[1096] A. Hall, Astr. Nach., No. 2,269.

[1097] Astr. Jour. (Gould's), vol. ii., p. 17.

[1098] Ibid., p. 5.

[1099] On the Stability of the Motion of Saturn's Rings, p. 67.

[1100] Mém. de l'Ac., 1715, p. 47; Montucla, Hist. des Math., t. iv., p. 19; An Original Theory of the Universe, p. 115.