part i.

1894 Publication of Roberts's _Celestial Photographs_, vol. i. 1894 Wilson and Gray's determination of the sun's temperature. 1894 Barnard's micrometric measures of asteroids. 1894 McClean's gift of an astrophysical outfit to the Cape Observatory. 1894 Establishment of the Lowell Observatory at Flagstaff, Arizona. 1894 Taylor's triple achromatic objective described. 1894, April 3 Discovery of Gale's Comet. 1894 Sampson's investigation of the sun's rotation. 1894, Oct. 20 Favourable opposition of Mars. 1894, Nov. 11 Transit of Mercury. 1894, December Howlett impugns the Wilsonian theory of sun-spots. 1894, Dec. 14 Death of A. Cowper Ranyard. 1895 Publication of Newcomb's _Astronomical Constants_. 1895 Bailey's Photometric Catalogue of 7,922 Southern Stars. 1895 Bailey's photographic discovery of variable star clusters. 1895 Publication of E. W. Brown's _Lunar Theory_. 1895 Tisserand's theory of the inequalities of Algol. 1895 Stratonoff's determination of the sun's rotation from photographs of faculae. 1895 Binary character of Eta Aquilae spectroscopically recognised by Belopolsky. 1895 Presentation of the Crossley reflector to the Lick Observatory. 1895, March 23 Great nebula in Ophiuchus discovered photographically by Barnard. 1895, March 25 Ramsay's capture of Helium. 1895, April Constitution of Saturn's rings spectrographically demonstrated by Keeler. 1895 Binary character of Delta Cephei spectroscopically detected by Belopolsky. 1895, June 11 Death of Daniel Kirkwood. 1895, July 7 Death of F. W. G. Sporer. 1895, October Nova Carinae spectrographically discovered by Mrs. Fleming. 1895, Dec. 12 Nova Centauri spectrographically discovered by Mrs. Fleming. 1895, Dec. 28 Death of John Russell Hind. 1896 Gill's Report on the Geodetic Survey of South Africa. 1896 Appearance of Loewy's Photographic Atlas of the Moon,