3rd edition. 90pp, colour plate frontispiece and further colour plate illustrations interleaved in text. Blue publisher's cloth-covered boards, gilt-stamped lettering on the spine, gilt motif on upper panel. 8vo. Cloth is a little tired, mottled fading at top of upper panel, gently rubbed and rounded at corners and spine ends. A little faint spotting on text block edges. Scattered small indentations on front free endpapers, gutter strained between pp32 and 33.