As to the institutions of the Locrian tribes in Greece, very little is known, and they never took a prominent part in Greek history. Down to a late period the use of slaves was almost wholly unknown among them, as well as among the Phocians. This fact, which indicates a people of simple habits, strangers to luxury and commerce, and attached to ancient usages, may lead us to the further conclusion that their institutions were mostly aristocratical; and this conclusion is confirmed by all that we hear of them. Opus is celebrated, in the fifth century B.C., as a seat of law and order by Pindar. [Illustration: MT. PARNASSUS, IN PHOCIS] Equally scanty is our information as to the general condition of the Phocians. Their land, though neither extensive nor fertile, was divided among between twenty and thirty little commonwealths, which were united like the Achæans and the Bœotians, and sent deputies at stated times to a congress which was held in a large building, called the Phocicum, on the road between Daulis and Delphi. But Delphi, though lying in Phocis, disclaimed all connection with the rest of the nation. Its government, as was to be expected under its peculiar circumstances, was strictly aristocratical, and was in the hands of the same families which had the management of the temple, on which the prosperity of the city and the subsistence of a great part of the inhabitants depended. In early times the chief magistrate bore the title of king, afterwards that of _prytanis_. But a council of five, who were dignified with a title marking their sanctity, and were chosen from families which traced their origin--possibly through Dorus--to Deucalion, and held their offices for life, conducted the affairs of the oracle.