1950. Reprint of first edi. 426 pages. Pictorial dust jacket over green cloth. Black and white frontispiece. First Reprint of the 1859 Edition. Black and white diagram to page 90-1. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Boards have mild shelf wear with light rubbing and corner bumping. Some mild marking and tanning. Gilt lettering remains bright and clear. Boards are slightly bowed. Unclipped jacket has moderate edge wear with mild tears, chipping and creasing. Some tanning and foxing to all surfaces, particularly to spine. Some rubbing and marking.