1900 November 28 meeting of the British Astronomical Association

1900 November 9 meeting of the Royal Astronomical Society

1900 October 31 meeting of the British Astronomical Association

1900-01 Possible Nova in Aquilla

1901 April 12 meeting of the Royal Astronomical Society

1901 April 17 meeting of the Royal Meteorological Society

1901 April 24 meeting of the British Astronomical Association

1901 December 13 meeting of the Royal Astronomical Society

1901 December 18 meeting of the British Astronomical Association

1901 December 18 meeting of the Royal Meteorological Society

1901 February 20 meeting of the Royal Meteorological Society

1901 February 27 meeting of the British Astronomical Association

1901 February 8 meeting of the Royal Astronomical Society

1901 January 11 meeting of the Royal Astronomical Society

1901 January 16 meeting of the Royal Meteorological Society

1901 January 30 meeting of the British Astronomical Association

1901 June 14 meeting of the Royal Astronomical Society

1901 June 19 meeting of the Royal Meteorological Society

1901 June 26 meeting of the British Astronomical Association

1901 March 20 meeting of the Royal Meteorological Society