[1526] Reproduced in Knowledge, April, 1893.

[1527] Unless an exception be found in the Pleiades nebulæ, which may be assumed to share the small apparent movement of the stars they adhere to.

[1528] Abhandl. Akad. der Wiss., Leipzig, 1857, Bd. iii., p. 295.

[1529] Month. Not., vol. lii., p. 31.

[1530] Proc. Roy. Soc., 1874, p. 251.

[1531] Publ. Astr. Pac. Soc., vol. ii., p. 278.

[1532] System of the Stars, p. 257.

[1533] Proc. Roy. Soc., vol. xlix., p. 399.

[1534] Potsdam Publ., Bd. vii., Th. i.

[1535] Astr. Nach., No. 2,714; Schönfeld, V. J. S. Astr. Ges., Jahrg. xxi., p. 58.