*7. Extension of Centralized Control.*--In respect to the actual mechanism of government the principal achievement of the Norman-Plantagenet period was the overhauling and consolidation of the agencies of administration. Despite the fact that local institutions of Saxon origin were largely respected, so that they have continued to this day the most substantial Anglo-Saxon contribution to English polity, there was a notable linking-up of these hitherto largely disassociated institutions with the institutions of the central government. This was accomplished in part by the dissolution of the earldoms by which the monarchy had been menaced in later Saxon days, and in part by a tremendous increase of the power and importance of the sheriffs. It was accomplished still more largely, however, by the organization of two great departments of government--those of justice and finance--presided over by dignitaries of the royal household and manned by permanent staffs of expert officials. The department of justice comprised the Curia; that of finance, the Exchequer. At the head of the one was the Chancellor; at the head of the other, the Treasurer. The principal officials within the two comprised a single body of men, sitting now as _justitiarii_, or justices, and now as _barones_ of the Exchequer. The profits and costs of asserting and administering justice and the incomings and outgoings of the Exchequer were but different aspects of the same fundamental concerns of (p. 007) state.[7] The justices of the Curia who held court on circuit throughout the realm and the sheriffs who came up twice a year to render to the barons of the Exchequer an account of the sums due from the shires served as the real and tangible agencies through which the central and local governments were knit together. As will appear, it was from the Norman Curia that, in the course of time, there sprang immediately those diversified departments of administration whose heads comprise the actual executive of the British nation to-day. [Footnote 7: Anson, Law and Custom of the Constitution, II., Pt. I., II.]