London: MacMillan and Co 1871. xvi, 279 pages plus addendum (1 page). 2 folding plates. Original green pebbled cloth with gold lettering on spine. Front and rear hinges cracked but still sound. Spine darkened but still readable. Corners bumped, minor wear overall to the binding. Bookplate of Sydney Ross on front pastedown. Occasional foxing, most prevalent on the first few and last few pages. Good. Cloth. 
Airy was an astronomer who supplied all the major participants in the discovery of the planet Neptune with the observational data they requested. His efficiency in the observatory was noted by other government services and he rapidly became the prototype of the modern government scientist (Concise DSB). The first edition was issued in 1868.
Dr. Sydney Ross cataloged the Herschel Library at Collingwood.