1925 November 25 meeting of the British Astronomical Association

1925 November 6 geophysical discussion

1925 October 28 meeting of the British Astronomical Association

1925- 99

1926 April 21 meeting of the Royal Meteorological Society

1926 April 28 meeting of the British Astronomical Association

1926 April 9 meeting of the Royal Astronomical Society

1926 December 10 meeting of the Royal Astronomical Society

1926 December 15 meeting of the Royal Meteorological Society

1926 December 29 meeting of the British Astronomical Association

1926 December 3 geophysical discussion

1926 February 12 meeting of the Royal Astronomical Society

1926 February 17 meeting of the Royal Meteorological Society

1926 February 24 meeting of the British Astronomical Association

1926 February 5 geophysical discussion

1926 January 15 geophysical discussion

1926 January 20 meeting of the Royal Meteorological Society

1926 January 27 meeting of the British Astronomical Association

1926 January 8 meeting of the Royal Astronomical Society

1926 June 11 meeting of the Royal Astronomical Society