Brandt, J. F.--Zoogeographische und Palæontologische Beiträge, "Verhandl. der Kais. russ. Mineral. Gesell." (2nd ser.), vol. ii., 1867.
Brauer, A.--Die Arktische Subregion, "Zool. Jahrbücher" (Abth. System.), 1888.
Brehm, A. E.--"From North Pole to Equator," 1896.
Brooke, Sir V.--On the Classification of the Cervidæ, "Proc. Zool. Soc. London," 1878.
Bulman, G. W.--The Effect of the Glacial Period on the Fauna and Flora of the British Islands, "Natural Science," vol. iii., 1893.
Bunge, D.--La faune éteinte des bouches de la Léna et des îles de la Nouvelle Sibérie, "Congrès Intern. de Zoologie," vol. ii., Moscow, 1892.
Carpenter, G. H.--Problems of the British Fauna, "Natural Science," vol. ii., 1897.
Christ, H.--"Das Pflanzenleben der Schweiz," 1879.
Cole, G. J.--Borderland, "Irish Naturalist," vol. vi., 1897.
Credner, R.--Die Reliktenseen, "Petermann's Geog. Mitth.," 1887.
Darwin, C.--"Origin of Species," 6th ed., 1878.
Dawkins, W. Boyd.--=a.= "Early Man in Britain," 1880. =b.= "The British Pleistocene Mammalia," part A, Preliminary Treatise, 1878. =c.= The Former Range of the Reindeer in Europe, "Popular Science Review," vol. vii., 1868.
Drude, O.--Betrachtungen ii. d. hypothetischen vegetationslosen Einöden im temperirten Klima der Nördlichen Hemisphäre zur Eiszeit, "Petermann's Geog. Mitth.," vol. xxxv., 1889.
Emery, C.--On the Origin of European and North American Ants, "Nature," vol. lii., 1895.
Engler, A.--"Versuch einer Entwicklungsgeschichte d. extratrop. Florengebiete d. Nördlichen Hemisphäre," 1879.
Falsan, A.--"La Période Glaciaire," 1889.
Feilden, H. W.--=a.= Notes on the Glacial Geology of Arctic Europe and its Islands, part 2, "Quart. Journ. Geol. Soc.," vol. lii., 1896. =b.= Notes on a small Collection of Spitsbergen Plants, "Trans. Norfolk and Norwich Nat. Hist. Soc.," vol. vi., 1894.
Fischer, P.--Faune malacologique de Cauterets, suivie d'une étude sur la répartition des Mollusques, "Journal de Conchyliologie" (3rd series), vol. xvi., 1876.
Forbes, E.--The Geological Relations of the Fauna and Flora of the British Isles, etc., "Memoirs Geol. Survey," vol. i., 1846.
Geikie, Sir A.--"Text-book of Geology," 1882.
Geikie, J.--=a.= "The Great Ice Age," 1894. =b.= On Changes of Climate during the Glacial Period, "Geological Magazine," vol. ix., 1872.