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

by Agnes M. Clerke

[1496] Ibid., No. 3,133; Astr. and Astroph., vol. xi., p. 715.

[1497] Publ. Astr. Pac. Soc., vol. iv., p. 244.

[1498] Barnard, Astroph. Jour., vol. xiv., p. 152; Campbell, Observatory, vol. xxiv., p. 360.

[1499] Pop. Astr., March, 1895, p. 307.

[1500] Harvard Circular, No. 4, December 20, 1895. The first Nova Persei was spectrographically recorded in 1887.

[1501] Vogel, Sitzungsb., Berlin, April 19, 1900, p. 389.

[1502] Sidgreaves, Observatory, vol. xxiv., p. 191.

[1503] Ibid., Knowledge, vol. xxv., p. 10.

[1504] Lick Bulletin, No. 8.

[1505] Astr. Nach., No. 3,736.