[259] _Ast. Soc. of the Pacific_, December, 1908, p. 280. [260] _Nature_, November 1, 1906. [261] _Ibid._, November 22, 1906, p. 93. [262] _Nature_, August 30, 1906. [263] _Cosmos_, vol. i. p. 131, footnote. [264] _Nature_, December 16, 1875. [265] _Ibid._, July 23, 1891. [266] _Bulletin, Ast. Soc. de France_, April, 1903. [267] _Bulletin, Ast. Soc. de France_, April, 1903. [268] _The Observatory_, May, 1896. The italics are Brenner's. [269] _Cosmos_, vol. iv. p. 563. [270] For details of this enumeration, see _Astronomical Essays_, p. 222. [271] _Nature_, June 11, 1908. [272] _Popular Astronomy_, vol. 14 (1906), p. 510. [273] _Bedford Catalogue_, p. 532. [274] _Popular Astronomy_, vol. 15 (1907), p. 194. [275] _Popular Astronomy_, vol. 15 (1907), p. 195. [276] _Bulletin, Ast. Soc. de France_, February, 1903. [277] Here χ is probably 17 Cygni, χ being the famous variable near it. [278] _Popular Astronomy_, vol. 13 (1904), p. 509. [279] _Astrophysical Journal_, December, 1895. [280] _The Observatory_, July, 1895, p. 290. [281] _Celestial Cycle_, p. 302. [282] _Nature_, December 13, 1894. [283] _Histoire Celeste_, p. 211. [284] _Nature_, October, 1887. [285] _Ibid._, August 29, 1889. [286] _Science Abstracts_, February 25, 1908, pp. 82, 83. [287] _Bedford Catalogue_, pp. 227-8. [288] _Knowledge_, February 1, 1888. [289] _Celestial Cycle_, p. 280. [290] _Popular Astronomy_, February, 1904. [291] _Ibid._, vol. 15 (1907), p. 444. [292] _Journal_, B.A.A., June, 1899. [293] _Astrophysical Journal_, vol. 8 (1898), p. 314. [294] _Astrophysical Journal_, vol. 8, p. 213. [295] _Ibid._, vol. 17, January to June, 1902. [296] _Astronomy and Astrophysics_, 1894, pp. 569-70. [297] _The Study of Stellar Evolution_ (1908), p. 171. [298] _Astrophysical Journal_, January, 1905. [299] _Journal_, B.A.A., June, 1901. [300] _Ast. Soc. of the Pacific_, December, 1908. [301] _The Observatory_, November, 1902, p. 391. [302] _Cosmos_, vol. iv. p. 567 (Otté's translation). [303] _Journal_, B.A.A., February, 1898. [304] _The Observatory_, April, 1887. [305] _Evangeline_, Part the Second, III. [306] _Legend of Robert, Duke of Normandy._ [307] _Copernicus_, vol. iii. p. 231. [308] _Ibid._, p. 61. [309] _Cosmos_, vol. i. p. 142. [310] These apertures are computed from the formula, minimum visible = 9 + 5 log. aperture. [311] _Cosmos_, vol. iii. p. 73. [312] _Darwin and Modern Science_, p. 563. [313] _Journal_, B.A.A., October, 1895. [314] Burnham's _General Catalogue of Double Stars_, p. 494. [315] _Journal_, B.A.A., November 18, 1896. [316] _Ibid._, B.A.A., January, 1907. [317] _Studies in Astronomy_, p. 185. [318] _Knowledge_, June, 1891. [319] Seen by Drs. Ludendorff and Eberhard, _The Observatory_, April, 1906, p. 166, quoted from _Ast. Nach._, No. 4067. [320] _The Observatory_, January, 1907, p. 61. [321] _Astronomy and Astrophysics_, 1894. [322] Smyth's _Celestial Cycle_, p. 223.