Observations of the natural history of the swallow tribe; with ... facts relative to their migration and ... brumal torpidity: and a copious table of reference to authors ... To which is added, a general catalogue of British birds. : British Library, Historical Print Editions : 9781241512347 : 1241512345 : 26 Mar 2011 : Title: Observations of the natural history of the swallow tribe; with ... facts relative to their migration and ... brumal torpidity: and a copious table of reference to authors ... To which is added, a general catalogue of British birds.Publisher: British Library, Historical Print EditionsThe British Library is the national library of the United Kingdom. It is one of the world's largest research libraries holding over 150 million items in all known languages and formats: books, journals, newspapers, sound recordings, patents, maps, stamps, prints and much more. Its collections include around 14 million books, along with substantial additional collections of manuscripts