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

by Agnes M. Clerke

[1556] Annals N. Y. Acad. of Sciences, vol. vi., p. 239, 1892; Elkin, Publ. Astr. Pac. Soc., vol. iv., p. 134.

[1557] Trans. Yale Observatory, vol. i., pt. i.

[1558] Astroph. Jour., vol. xiii., p. 56.

[1559] Astr. Nach., No. 2,719.

[1560] Ibid., No. 2,726.

[1561] Ibid., No. 2,730.

[1562] Month. Not., vol. xlvii., p. 24.

[1563] Les Mondes, t. iii., p. 529.

[1564] Mouchez, Comptes Rendus, t. cvi., p. 912.

[1565] Astr. Nach., No. 3,422.