Changes more comprehensive than those effected in the law itself were introduced into--what was more important in a political point of view, and more easily admitted of alteration--the system of judicial administration. First of all came the important limitation of the supreme judicial power by the embodiment of the common law in a written code, and the obligation of the magistrate thenceforth to decide no longer according to varying usage, but according to the written letter, in civil as well as in criminal procedure (303, 304). The appointment of a supreme magistrate in Rome exclusively for the administration of justice in 387,(9) and the establishment of separate police functionaries which took place contemporaneously in Rome, and was imitated under Roman influence in all the Latin communities,(10) secured greater speed and precision of justice. These police-magistrates or aediles had, of course, a certain jurisdiction at the same time assigned to them. On the one hand, they were the ordinary civil judges for sales concluded in open market, for the cattle and slave markets in particular; and on the other hand, they ordinarily acted in processes of fines and amercements as judges of first instance or--which was in Roman law the same thing--as public prosecutors. In consequence of this the administration of the laws imposing fines, and the equally indefinite and politically important right of fining in general, were vested mainly in them. Similar but subordinate functions, having especial reference to the poorer classes, pertained to the three night--or blood-masters (-tres viri nocturni- or -capitales-), first nominated in 465; they were entrusted with the duties of nocturnal police as regards fire and the public safety and with the superintendence of executions, with which a certain summary jurisdiction was very soon, perhaps even from the outset, associated.(11) Lastly from the increasing extent of the Roman community it became necessary, out of regard to the convenience of litigants, to station in the more remote townships special judges competent to deal at least with minor civil causes. This arrangement was the rule for the communities of burgesses -sine suffragio-,(12) and was perhaps even extended to the more remote communities of full burgesses,(13)--the first germs of a Romano-municipal jurisdiction developing itself by the side of that which was strictly Roman. Changes in Procedure