1950. Third Edition. 114 pages. No dust jacket. This is an ex-Library book. Red cloth with gilt lettering to spine. Ex-library copy, with expected inserts and inscriptions. Revised by Raymond Mortimer. Includes black and white photographic plates and a colour frontispiece. Pages and plates remain bright and clear with mild thumbing throughout. Small tear to gutter on content page, tape supporting gutter p.viii. Mild staining to gutter p.2. Moderate tanning and foxing to text block edges. Boards have light shelf-wear with mild corner bumping and fraying. Mild rubbing all over. Tape holding ex-library number to spine. Small dents to bottom of front board. Mild sunning to spine and top edge of front board.