CLARKE, William Eagle. Studies in Bird Migration, London: Gurney & Jackson, 1912, 2 volumes, 8°, frontispiece to each volume, 16 half tone plates, 7 maps, one folding, original publisher's cloth, dust-jacket (slightly chipped). [Wood, p. 291; Zimmer, p. 133: "a very detailed series of the studies of the various aspects of the migration of birds, with special attention to the British and Irish coasts"] With another 41 volumes on ornithology including Ussher and Warren's The Birds of Ireland (London, 1900), Tavistock's Parrots (London, n.d.), Verner's My Life among the Wild Birds in Spain (London, 1909), Lodge's Bird-Hunting through wild Europe (London, circa 1908) and Chapman's Bird-Life of the Borders (London, 1889). (43)