[24] Smyth, Celestial Cycle, p. 60.
[25] Denning, Telescopic Work for Starlight Evenings, p. 225.
[26] The Observatory, 1894, p. 395.
[27] Ast. Nach. 4333, quoted in Nature, July 1, 1909, p. 20.
[28] English Mechanic, July 23, 1909.
[29] Nature, December 22, 1892.
[30] Celestial Objects, vol. i. p. 52, footnote.
[31] Ibid., p. 54.
[32] Astronomy and Astrophysics, 1892, p. 618.
[33] Nature, August 7, 1879.