1918 May 1 meeting of the British Astronomical Association

1918 May 10 meeting of the Royal Astronomical Society

1918 May 15 meeting of the Royal Meteorological Society

1918 May 29 meeting of the British Astronomical Association

1918 May 8 geophysical discussion

1918 November 20 meeting of the Royal Meteorological Society

1918 November 27 meeting of the British Astronomical Association

1918 November 8 meeting of the Royal Astronomical Society

1918 October 30 meeting of the British Astronomical Association

1919 April 11 meeting of the Royal Astronomical Society

1919 April 16 meeting of the Royal Meteorological Society

1919 April 30 meeting of the British Astronomical Association

1919 December 12 meeting of the Royal Astronomical Society

1919 December 17 meeting of the Royal Meteorological Society

1919 December 31 meeting of the British Astronomical Association

1919 February 14 meeting of the Royal Astronomical Society

1919 February 19 meeting of the Royal Meteorological Society

1919 February 26 meeting of the British Astronomical Association

1919 January 10 meeting of the Royal Astronomical Society

1919 January 15 meeting of the Royal Meteorological Society