Papers regarding planetary, lunar and radio astronomy, including the following material:

Planetary and lunar tables, errors in the tables and papers on Drayton's theory of the Earth's processional rotation, 1893-1894.

Lunar tables and errors in them and material on lunar tides and motions of the moon, 1924-1925, with correspondence with F.R. Field and proofs and newscuttings of his articles on the history of the Earth, earthquakes, the effects of the Sun and the planets on the earth, sunspots and glaciation.

Papers on eclipses, new planets, lunar altitudes, measurements, etc., 1927-1936.

Correspondence with the International Scientific Radio Union, the B.B.C., the Radio Society of Great Britain and the Comité Francais de Radiotélégraphie Scientifique, 1935-1940, regarding the association between the fading of short radio waves, bright star eruptions and ionospheric disturbances.

Correspondence concerning coronas, sunspots and weather and radio conditions, 1923-1938.