No Edition Stated. 336 pages. No dust jacket. Vol I - Scientific. Green cloth with gilt lettering. B&W illustrations throughout. Frontispiece detached but present. Notable foxing and tanning to endpapers and page edges. Hospital plate to front paste down. Previous owner's name to front endpaper. Some gutter cracking. Mild wear and bumping to spine, board edges and corners, with scuffing, staining and marking to boards. Notable sunning to spine and board edges.