[323] _Nature_, February 7, 1907. [324] _Ibid._, March 19, 1908. [325] _Popular Astronomy_, vol. 15 (1907), p. 9. [326] _Astrophysical Journal_, June, 1907, p. 330. [327] _Ibid._, vol. 22, p. 172. [328] _Nature_, November 18, 1886. [329] _Astrophysical Journal_, vol. 17 (1903), p. 282. [330] _Astrophysical Journal_, vol. 12 (1900), p. 54. [331] _Nature_, March 21, 1878. [332] _Bulletin, Ast. Soc. de France_, June, 1904. [333] _Journal_, B.A.A., vol. 17 (1903), p. 282. [334] _Nature_, June 20, 1909. [335] _The Observatory_, vol. 7 (1884), p. 17. [336] _The Observatory_, vol. 14 (1891), p. 69. [337] _Astronomy and Astrophysics_, 1896, p. 54 [338] _Nature_, August 28, 1902. [339] _Astrophysical Journal_, October, 1903. [340] _Nature_, May 30, 1907. [341] _Popular Astronomy_, February, 1909, p. 125. [342] _The Observatory_, May, 1907, p. 216. [343] _Astrophysical Journal_, May, 1907. [344] _Histoire de l'Astronomie Moderne_, vol. i. pp. 185-6. [345] Humboldt's _Cosmos_, vol. iii. p. 210 (Otté's translation). [346] _Ibid._, vol. iii. pp. 213-14. [347] J. C. Duncan, _Lick Observatory Bulletin_, No. 151. [348] _Astrophysical Journal_, vol. 17, p. 283. [349] _The Origin of the Stars_, p. 143. [350] _Ibid._, p. 135. [351] Quoted by Ennis in _The Origin of the Stars_, p. 133. [352] _Astrophysical Journal_, vol. 20 (1904), p. 357. [353] _Nature_, March 8, 1906. [354] _Astronomical Society of the Pacific_, August, 1908. [355] _Astronomy and Astrophysics_, 1894, p. 812. [356] _The Observatory_, May, 1905. [357] This is a misquotation. See my _Astronomical Essays_, p. 135. [358] _Nature_, February 3, 1870. [359] _Bedford Catalogue_, p. 14. [360] _Ibid._, p. 307. [361] _Astrophysical Journal_, vol. 14, p. 37. [362] _Ibid._, vol. 9, p. 149. [363] _Nature_, July 20, 1899. [364] _Ast. Nach._, No. 3476. [365] _Astronomische Nachrichten_, No. 4213. [366] _Astrophysical Journal_, vol. 9, p. 149. [367] _Cape Observations_, p. 61. [368] _Ibid._, p. 85. [369] _Cape Observations_, p. 98. [370] _Transactions_, Royal Dublin Society, vol. 2. [371] _Ast. Nach._, 3628, quoted in _The Observatory_, April, 1900. [372] _Nature_, April 8, 1909. [373] _Problems in Astrophysics_, p. 477. [374] _Ibid._, p. 499. [375] _Copernicus_, vol. iii. p. 55. [376] _Lick Observatory Bulletin_, No. 149. [377] _Ibid._ [378] _Ibid._ [379] _Monthly Notices_, R.A.S., April, 1908, pp. 465-481. [380] _Lick Observatory Bulletin_, No. 155 (February, 1909). [381] _Outlines of Astronomy_, par. 870 (Edition of 1875). [382] _Georgics_, i. II. 217-18. [383] See paper by Mr. and Mrs. Maunder in _Monthly Notices_, R.A.S., March, 1904, p. 506. [384] _Primitive Constellations_, vol. ii. p. 143. [385] _Recherches sur l'Histoire de l'Astronomie Ancienne_, by Paul Tannery (1893), p. 298. [386] _Primitive Constellations_, vol. ii. p. 225. [387] _Nature_, October 2, 1890. [388] Lalande's _Astronomie_, vol. i. pp. 243-4.