Henry appeared completely triumphant; but the fourteen years which he had yet to live were for the most part to be times of trouble and frustrated hopes. He was growing old; the indomitable energy of his early career was beginning to slacken; his dreams of extended empire were vanishing. In the last period of his life he was more set on defending what he already enjoyed, and perfecting the details of administration in his realms, than on taking new adventures in hand. Probably the consciousness that his dominions would be broken up among his sons after his death had a disheartening effect upon him. At any rate his later years bear a considerable resemblance to the corresponding period of his grandfather's reign. The machinery of government which the one had sketched out the other completed. Under Henry II. the circuits of the itinerant justices became regular instead of intermittent; the judicial functions of the Curia Regis were delegated to a permanent committee of that body which took form as the court of king's bench (_Curia Regis in Banco_). The sheriffs were kept very tightly in hand, and under incessant supervision; once in 1170 nearly the whole body of them were dismissed for misuse of their office. The shire levies which had served the king so well against the feudal rebels of 1173 were reorganized, with uniformity of weapons and armour, by the _Assize of Arms_ of 1181. There was also a considerable amount of new legislation with the object of protecting the minor subjects of the crown, and the system of trial by jurors was advanced to the detriment of the absurd old practices of trial by ordeal and trial by wager of battle. The 13th-century jury was a rough and primitive institution, which acted at once as accuser, witness and judge--but it was at any rate preferable to the chances of the red-hot iron, or the club of the duellist.