The earliest law suits (legis actiones) were conducted orally in two stages: a preliminary one before the jurisdictional magistrate, in which the issue was developed; and then the actual presentation of evidence to the judex, or judge. The first stage required that set forms of words be spoken by the parties and, sometimes, by the magistrate. The parties making an assertion of ownership, for instance, would grasp the thing in dispute and lay a wand on it, after which the magistrate would intervene and say, “Let go, both of you.” So formal was the procedure that a plaintiff who made the slightest mistake lost his case. For the second stage, before the judex, there were no formal rules. However, the plaintiff had the burden of proof, was responsible for physically producing the defendant in court and, often, for carrying out the sentence.
Under new procedures developed in the 2nd and 1st centuries bc, the issue at the magisterial stage was formulated in written instructions to the judex, couched in the form of an alternative: “If it appears that the defendant owes the plaintiff 10,000 sesterces, the judex is to condemn the defendant to pay the plaintiff 10,000 sesterces; if it does not so appear, he is to absolve him.” A draft of these written instructions was probably prepared for the plaintiff before he came into court, but there could be no trial until it was accepted by the defendant, for there was always a contractual element about a lawsuit under both the new and the old systems. Pressure, however, could be exercised by the magistrate on a defendant who refused to accept instructions that the magistrate had approved, just as a plaintiff could be forced to alter instructions that the magistrate had disapproved, by the magistrate’s refusal to otherwise give the order to the judex to decide the case.
In late republican times, still another system developed, first in the provinces, then in Rome. Under the new system the magistrate used his administrative powers, which were always considerable, for the purpose of settling disputes. He could command: thus if one person brought a complaint against another before him, he could investigate the matter and give the order he thought fit. As imperially appointed officers superseded republican magistrates, this administrative process became more common. The result was that the old contractual element in procedure disappeared as did the old two-stage division. Justice was now imposed from above by the state—not, as originally, left to a kind of voluntary arbitration supervised by the state.
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