Contents :
I. The second century to the ninth, by A. J. Carlyle, 3d ed. 1930.--II. The political theory of the Roman lawyers and the canonists, from the tenth century to the thirteenth century, by A. J. Carlyle. 2d impression. 1928.--III. Political theory from the tenth century to the thirteenth, by A. J. Carlyle. 1928.--IV. The theories of the relation of the empire and the papacy from the tenth century to the twelfth, by A. J. Carlyle. 2d impression. 1932.--V. The political theory of the thirteenth century. 1928.--VI. Political theory from 1300 to 1600. 1936
