1912 344 p., 3 folded maps, 17 plates (two in full colour), numerous text figures, contemporary full cloth with gilt title on spine. Endpapers with floral pattern.Interesting, rather early work on ideas relating to introducing the natural enemies of the also introduced noxious gypsy moth. Bookplate on front pastedown. Inscribed by a former owner on the frontispiece verso. A good copy.