Photo-heliographic results 1874 to 1885 being supplementary results from photographs of the sun taken at Greenwich, at Harvard college, U.S.A., at Melbourne, in India, and in Mauritius in the years 1874 to 1885
Subtitle: and measured and reduced at the Royal observatory, Greenwich
By: under the direction of Sir W.H.M. Christie ... astronomer royal.
Publisher: Printed for H.M. Stationery off., by Neill & co., limited
Published: 1907
Place of publication: Edinburgh
Number of pages: 321
Subjects: Sunspots