1904 June 15 meeting of the Royal Meteorological Society

1904 June 29 meeting of the British Astronomical Association

1904 March 11 meeting of the Royal Astronomical Society

1904 March 16 meeting of the Royal Meteorological Society

1904 March 30 meeting of the British Astronomical Association

1904 Massevitch Average CCD Spectrum

1904 May 13 meeting of the Royal Astronomical Society

1904 May 18 meeting of the Royal Meteorological Society

1904 May 25 meeting of the British Astronomical Association

1904 November 11 meeting of the Royal Astronomical Society

1904 November 16 meeting of the Royal Meteorological Society

1904 November 30 meeting of the British Astronomical Association

1904 October 26 meeting of the British Astronomical Association

1905 April 14 meeting of the Royal Astronomical Society

1905 April 19 meeting of the Royal Meteorological Society

1905 April 26 meeting of the British Astronomical Association

1905 December 20 meeting of the Royal Meteorological Society

1905 December 27 meeting of the British Astronomical Association

1905 December 8 meeting of the Royal Astronomical Society

1905 February 10 meeting of the Royal Astronomical Society