London: John Murray, 1976. Second, further revised impression of the eighth revised edition, Volume IV first impression of the eighth edition, four volumes, 8vo., pp.xx,845;xvi,784;xvi,973;xv,808, teal blue cloth, gilt, b/w plates, top edges blue; rubbing to extremities, rear inner hinge of Volume IV broken, with webbing visible between endpapers, a very good set, in very good complete and unclipped dust-jackets.