[Fifth and Sixth] Report on the Migration of Birds, in the Spring and Autumn of [1883-1884], London, West, Newman & Co., 1884-85, 2 vols., 8°, one folding map; and 14 other 14 other pamphlets on ornithology and natural history, bound in one vol., contemporary half calf (rubbed, foot of spine chipped); and 5 other vols. of contemporary natural history pamphlets. (6)" /> BRITISH MUSEUM (NATURAL HISTORY). <I>A Guide to the Gould Collection of Humming-Birds, </I>[London], by Order of the Trustees, 1884, 8°, one tinted lithographed map, wood-engraved illustrations -- OWEN, Richard. <I>On the Skull and Dentition of Tritylodon Longaevus, </I>[n.p., Geological Society, 1884, 8°, inscribed on half title: "John Henry Gurney Esq. with the author's kind regards," 2 lithographed plates -- HARVIE-BROWN, J.A. [and others].<I> [Fifth and Sixth] Report on the Migration of Birds, in the Spring and Autumn of [1883-1884],</I> London, West, Newman & Co., 1884-85, 2 vols., 8°, one folding map; and 14 other 14 other pamphlets on ornithology and natural history, bound in one vol., contemporary half calf (rubbed, foot of spine chipped); and 5 other vols. of contemporary natural history pamphlets. (6) | Christie's