[124] Ibid., September 28, 1905.

[125] Ibid., July 13, 1905.

[126] Nature, November 3, 1898.

[127] Ibid., July 14, 1881, p. 235.

[128] Quoted in The Observatory, February, 1896, p. 104, from Ast. Nach., No. 3319.

[129] Monthly Notices, R.A.S., February, 1909.

[130] Celestial Objects, vol. i. p. 163.

[131] Nature, December 29, 1898.

[132] Celestial Objects, vol. i. p. 166.

[133] Astrophysical Journal, vol. 14 (1901), pp. 248-9.