1892. Royal Astronomical Society’s Medal.

1911. Copley Medal of the Royal Society.

1912. Royal Geographical Society’s Medal.

Offices.

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).