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66 be added that the lines within which movement is permitted, and beyond which there is to be no travelling, were chalked with as much distinctness in the one case as in the other. In England the judge follows the analogies of reported decisions on insulated groups of facts. At Rome, as the intervention of the Prætor was at first dictated by simple concern for the safety of the state, it is likely that in the earliest times it was proportioned to the difficulty which it attempted to get rid of. Afterwards, when the taste for principle had been diffused by the Responses, he no doubt used the Edict as the means of giving a wider application to those fundamental principles, which he and the other practising jurisconsults, his contemporaries, believed themselves to have detected underlying the law. Latterly he acted wholly under the influence of Greek philosophical theories, which at once tempted him to advance and confined him to a particular course of progress.

The nature of the measures attributed to Salvius Julianus has been much disputed. Whatever they were, their effects on the Edict are sufficiently plain. It ceased to be extended by annual additions, and henceforward the equity jurisprudence of Rome was developed by the labours of a succession of great jurisconsults who fill with their writings the interval between the reign of Hadrian and the reign of Alexander Severus. A fragment of the