Page:Memoirs of the Geological Survey of Great Britain, Volume 1.djvu/381

368 such an assemblage of mollusks now inhabiting the coasts of Greenland (as determined by the researches of the late Dr. Möller, and formerly by Otho Fabricius ), and such as may be found on the coasts of Massachusetts ),—but approaching most nearly the former, and probably nearest that living on the coast of Labrador.

That the climate, under which the glacial animals lived, was colder, is borne out by an examination of the species themselves. We find the entire assemblage made up—1st, of species now living throughout the Celtic region in common with the Northern Seas, and scarcely ranging south of the British Seas; such are—

2nd. Of species which range far south into the Lusitanian and Mediterranean regions, but which are most prolific in the Celtic and Northern Seas; as—

3rd. Of species still existing in the British Seas, but confined to the