1924-1945 2 vols. xi, 487, lxviii, 548, xx p., 54 (of 56) pls, 38 coloured of which 5 are of eggs, roy. 4to., loose in printed covers as issued (in 16 parts). Two plates are missing: one col. plate of Climacocercus ruficollis and one black & white plate of Goshawk attacking Capercaillie. Some light scattered foxing of text and on a few of the uncoloured plates. Scarce work limited to 412 copies.