[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.