 Basiliscus re @-@ instated Timothy Aelurus and Peter the Fuller to their sees , and by persuasion of the former issued ( 9 April 475 ) a circular letter ( <unk> ) to the bishops calling them to accept as valid only the first three ecumenical synods , and reject the Council of Chalcedon . All bishops were to sign the edict . While most of the Eastern bishops accepted the letter , Patriarch Acacius of Constantinople refused , with the support of the population of the city , clearly showing his disdain towards Basiliscus by draping the icons in Hagia Sophia in black . 
