1931 May 20 meeting of the Royal Meteorological Society

1931 May 27 meeting of the British Astronomical Association

1931 May 8 meeting of the Royal Astronomical Society

1931 November 13 meeting of the Royal Astronomical Society

1931 November 18 meeting of the Royal Meteorological Society

1931 November 23 meeting of the British Astronomical Association

1931 November 27 geophysical discussion

1931 October 28 meeting of the British Astronomical Association

1931 October 30 geophysical discussion

1932 April 20 meeting of the Royal Meteorological Society

1932 April 27 meeting of the British Astronomical Association

1932 April 29 geophysical discussion

1932 April 8 meeting of the Royal Astronomical Society

1932 December 14 meeting of the Royal Meteorological Society

1932 December 28 meeting of the British Astronomical Association

1932 December 9 meeting of the Royal Astronomical Society

1932 February 12 meeting of the Royal Astronomical Society

1932 February 17 meeting of the Royal Meteorological Society

1932 February 26 geophysical discussion

1932 February 29 meeting of the British Astronomical Association