In judging the 'The History of the Decline and Fall of the Roman Empire' it should carefully be observed that it falls into two parts which are heterogeneous in the method of treatment. The first part, a little more than five-eighths of the work, supplies a very full history of 460 years (A.D. 180–641); the second and smaller part is a summary history of about 800 years (A.D. 641–1453) in which ce...