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

by Agnes M. Clerke

[1566] Ibid., No. 3,441.

[1567] Ibid., Nos. 3,018, 3,032.

[1568] Journ. Brit. Astr. Assoc., vol. ix., p. 133.

[1569] Astr. Nach., No. 3,253.

[1570] Observatory, vol. xxi., pp. 351, 386.

[1571] Reproduced in Astroph. Journ., vol. xi., p. 324.

[1572] Ibid., p. 347.

[1573] Astr. Nach., No. 3,704.

[1574] Sitzungsb. Bayer. Akad., March 23, 1901.

[1575] Annals of the Cape Observatory, vols. iii., iv., v.