The Inquisition was unaccustomed to submit to control, and soon chafed under these limitations. Already, in 1292, Nicholas IV. complained to Piero Gradenigo that the terms of the agreement were not carried out. The inquisitors, Bonagiunta of Mantua and Giuliano of Padua, reported that the papal and imperial laws against heresy were not enforced, and that under the arrangement for expenditures they were unable to employ a force of familiars sufficient to detect and seize the heretics. Heresy consequently, they said, continued to flourish in Venetian territory, for all of which Nicholas bitterly scolded the doge, and demanded such changes as should remove these scandals, but without effect. The Signoria, apparently, had not seen fit to abolish the office of secular inquisitors provided by the legislation of 1249. These were three in number, and were known as the “_tre Savi dell’ eresia_,“ or ”_assistenti_.” It was hardly possible that a duplicate organization such as this could work without clashing. The situation became intolerable, and in 1301 Frà Antonio, the Inquisitor of Treviso, resolved to put an end to it. He notified the three Savi, Tommaso Viaro, Marino Zorzi, and Lorenzo Segico, to recognize no superior save himself. Their submission not being forthcoming, he proceeded to Venice, and addressed to the Doge Gradenigo a monition ordering him, under pain of excommunication, to swear to obey all the papal constitutions on heresy. Gradenigo refused, alleging that this would be a violation of his oath of office; the inquisitor withdrew his monition, and matters remained as before. Whatever hopes had been entertained that the entering wedge would enable the Inquisition to establish itself without restriction were foiled by the steadfastness of the republic. The three Savi continued their functions and, perhaps, even enlarged them; it had become customary for them to be selected from among the senators, and they acted in conjunction with the inquisitor in all cases coming within his jurisdiction. As Venice extended her conquests on the mainland, in all cities under her domination the _rettori_ or governors performed this function, and their participation was required in all prosecutions for heresy, not only by the inquisitor, but by the bishops.[286] * * * * *