FIRST EDITION, 8vo, pp. xii, 160, [4, ads] + colour frontispiece and 8 leaves of black & white photographic illustrations. Original green cloth, spine lettered in gilt. Some spotting to fore-edge. Dustjacket showing some spotting in uncoloured areas, short tear to rear joint fold and light dustsoiling to rear panel.
Quite a nice copy of New Naturalist Monograph 10, considered the rarest of the monographs.