1926 June 16 meeting of the Royal Meteorological Society

1926 June 18 geophysical discussion

1926 June 30 meeting of the British Astronomical Association

1926 March 12 meeting of the Royal Astronomical Society

1926 March 17 meeting of the Royal Meteorological Society

1926 March 31 meeting of the British Astronomical Association

1926 May 14 meeting of the Royal Astronomical Society

1926 May 19 meeting of the Royal Meteorological Society

1926 May 26 meeting of the British Astronomical Association

1926 November 12 meeting of the Royal Astronomical Society

1926 November 17 meeting of the Royal Meteorological Society

1926 November 26 meeting of the British Astronomical Association

1926 November 5 geophysical discussion

1926 October 27 meeting of the British Astronomical Association

1927 April 20 meeting of the Royal Meteorological Society

1927 April 27 meeting of the British Astronomical Association

1927 April 8 meeting of the Royal Astronomical Society

1927 December 14 meeting of the Royal Meteorological Society

1927 December 2 geophysical discussion

1927 December 28 meeting of the British Astronomical Association