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

by Agnes M. Clerke

[1416] Phil. Trans., vol. clxxi., p. 669; Atlas of Stellar Spectra, p. 22.

[1417] Astr. Nach., No. 2,301; Monatsb., Berlin, 1879, p. 119; 1880, p. 192.

[1418] Jour. de Physique, t. v., p. 98.

[1419] System of the Stars, p. 39.

[1420] See ante, p. 198.

[1421] Proc. Roy. Soc., vol. xlviii., p. 314.

[1422] Harvard Circulars, Nos. 12, 18; Astroph. Jour., vol. v., p. 92.

[1423] Astroph. Jour., vol. vi., p. 233.

[1424] McClean, Phil. Trans., vol. cxci. A., p. 129.

[1425] Proc. Roy. Soc., vol. lxii., p. 417.