1918 April 10 geophysical discussion

1918 April 12 meeting of the Royal Astronomical Society

1918 April 17 meeting of the Royal Meteorological Society

1918 December 13 meeting of the Royal Astronomical Society

1918 December 18 meeting of the Royal Meteorological Society

1918 February 13 geophysical discussion

1918 February 20 meeting of the Royal Meteorological Society

1918 February 27 meeting of the British Astronomical Association

1918 February 8 meeting of the Royal Astronomical Society

1918 January 11 meeting of the Royal Astronomical Society

1918 January 16 meeting of the Royal Meteorological Society

1918 January 30 meeting of the British Astronomical Association

1918 June 12 geophysical discussion

1918 June 14 meeting of the Royal Astronomical Society

1918 June 19 meeting of the Royal Meteorological Society

1918 June 26 meeting of the British Astronomical Association

1918 March 13 geophysical discussion

1918 March 20 meeting of the Royal Meteorological Society

1918 March 27 meeting of the British Astronomical Association

1918 March 8 meeting of the Royal Astronomical Society