Question: The "Directa" decretal was written by Pope Siricius in February AD 385, it took the form of a long letter to Spanish bishop Himerius of Tarragona replying to the bishop’s requests for "directa" on various subjects sent several months earlier to which Pope of the Catholic Church from October 366 to his death in 384? 
Sentence (from "Pope Damasus I"): He spoke out against major heresies in the church (including Apollinarianism and Macedonianism) and encouraged production of the Vulgate Bible.
Relevant evidence: No