1928 February 10 meeting of the Royal Astronomical Society

1928 February 15 meeting of the Royal Meteorological Society

1928 February 29 meeting of the British Astronomical Association

1928 February 3 geophysical discussion

1928 January 13 meeting of the Royal Astronomical Society

1928 January 16 meeting of the Royal Meteorological Society

1928 January 18 meeting of the Royal Meteorological Society

1928 January 25 meeting of the British Astronomical Association

1928 June 20 meeting of the Royal Meteorological Society

1928 June 27 meeting of the British Astronomical Association

1928 June 8 meeting of the Royal Astronomical Society

1928 March 2 geophysical discussion

1928 March 21 meeting of the Royal Meteorological Society

1928 March 28 meeting of the British Astronomical Association

1928 March 9 meeting of the Royal Astronomical Society

1928 May 11 meeting of the Royal Astronomical Society

1928 May 16 meeting of the Royal Meteorological Society

1928 May 30 meeting of the British Astronomical Association

1928 May 4 geophysical discussion

1928 November 16 geophysical discussion