The last boon of Gracchus to the citizen body as a whole was a new agrarian law.[614] The necessity of such a measure was chiefly due to the suspension of the work of the agrarian commission, which had proved an obstacle to the continued execution of his brother's scheme; and there is every reason for believing that the new Sempronian law restored their judicial powers to the commissioners. But experience may have shown that the substance of Tiberius's enactment required to be supplemented or modified; and Caius adopted the procedure usually followed by a Roman legislator when he renewed a measure which had already been in operation. His law was not a brief series of amendments, but a comprehensive statute, so completely covering the ground of the earlier Sempronian law that later legislation cites the law of Caius, and not that of Tiberius Gracchus, as the authority for the regulations which had revolutionised the tenure of the public land.[615] The new provisions seem to have dealt with details rather than with principles, and there is no indication that they aimed at the acquisition of territory which had been exempted from the operation of the previous measure, or even touched the hazardous question of the rights of Rome to the land claimed by the Italian allies. We cannot attempt to define the extent to which the executive power granted by the new agrarian law was either necessary or effective. Certainly the returns of the census during the next ten years show no increase in the number of registered citizens;[616] but this circumstance may be due to the steps which were soon to be taken by the opponents of the Gracchi to nullify the results of their legislation. It is possible, however, that the new corn law may have somewhat damped the ardour of the proletariate for a life of agriculture which would have deprived them of its benefits.