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CHAP. III. not undertaken to decide them, and he must soon have addressed himself to the more critical disputes which in the extension of commerce arose between Roman subjects and avowed foreigners. The great increase of such cases in the Roman Courts about the period of the first Punic War is marked by the appointment of a special Prætor, known subsequently as the Prætor Peregrinus, who gave them his undivided attention. Meantime, one precaution of the Roman people against the revival of oppression, had consisted in obliging every magistrate whose duties had any tendency to expand their sphere, to publish, on commencing his year of office, an Edict or proclamation, in which he declared the manner in which he intended to administer his department. The Prætor fell under the rule with other magistrates; but as it was necessarily impossible to construct each year a separate system of principles, he seems to have regularly republished his predecessor's Edict with such additions and changes as the exigency of the moment or his own views of the law compelled him to introduce. The Prætor's proclamation, thus lengthened by a new portion every year, obtained the name of the Edictum Perpetuum, that is, the continuous or unbroken edict. The immense length to which it extended, together perhaps with some distaste for its necessarily disorderly texture,