(3) Their care of the market is typified by Cicero in the most important of its subdivisions—the care of the corn-supply (_cura annonae_).[963] Their duty was to regulate prices as far as possible, especially by the prevention of monopolies; the aediles often sold corn at a moderate price fixed by the state, although sometimes ambition led them to incur the loss themselves;[964] and it was they who as a rule presided over the distributions ordained by the later _leges frumentariae_.[965] The supply of corn to an army in Italy from the city magazines was also one of their cares.[966] Other duties springing from their control of the market were the enforcement of the sumptuary laws,[967] the inspection of weights and measures with the maintenance of their normal standard,[968] and the regulation of the sale of slaves and cattle. This power found expression in civil jurisdiction, which was in this case also confined to the curule aediles. It was they who gave the _formula_ for the return of slaves and cattle sold under false representations, and appointed the _judex_ in such cases.[969] (4) The _cura ludorum_ of the aediles was not the mere presidency of festivals such as was possessed by other magistrates, but the establishment of regularly recurring games, very largely at their own expense. The games were given jointly by the respective pairs of colleagues,[970] the oldest festival, the _ludi Romani_, being in the hands of the curule,[971] the _ludi plebeii_ in those of the plebeian aediles.[972] The other festivals established from time to time—_Megalesia_, _Cerealia_, _Floralia_—increased the burden of the aedileship. The Megalesia apparently fell to the lot of the curule aediles,[973] the others seem to have been given indifferently by either pair.