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

by Agnes M. Clerke

[1546] Sid. Mess., vol. ix., p. 1.

[1547] Knowledge, vol. xv., p. 191.

[1548] Month. Not., vol. xlix., p. 65.

[1549] System of the Stars, p. 269.

[1550] Astr. Nach., Nos. 2,749, 2,754.

[1551] Vogel, Astr. Nach., 2,854.

[1552] Nature, vol. xliii., p. 419.

[1553] L'Astronomie, t. xl., p. 171.

[1554] Astr. Nach., Bände xlvii., p. 1; xlviii., p. 1; xlix., p. 81. Pickering, Mem. Am. Ac., vol. xi., p. 180.

[1555] Gould on Celestial Photography, Observatory, vol. ii., p. 16.