1892. Royal Astronomical Society’s Medal.
1911. Copley Medal of the Royal Society.
1912. Royal Geographical Society’s Medal.
Fellow of Trinity College, Cambridge, and Plumian Professor in the University.
Vice-President of the International Geodetic Association, Lowell Lecturer at Boston U.S. (1897).
Member of the Meteorological and Solar Physics Committees.
Past President of the Cambridge Philosophical Society, [193] Royal Astronomical Society, British Association.
Doctorates, etc., of Universities.
Oxford, Dublin, Glasgow, Pennsylvania, Padua (Socio onorario), Göttingen, Christiania, Cape of Good Hope, Moscow (honorary member).