1867. No edition remarks. 236 pages. No dust jacket. Brown cloth covered boards with gilt. Black and white diagrams throughout. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Pencil inscriptions to endpapers. Some marginalia. A previous owner's name stamp to front free endpaper and pastedown. Boards have heavy shelf wear with bumping and fraying to corners and crushing, fraying and tearing to spine ends and edges. All surfaces tanned and sunned, particularly spine. Gilt lettering to spine is slightly dulled. Some additional mild marks and staining.