About the same time, Acacius, also from Edessa, established a school at Seleucia. It was revived in 530, and was in existence as late as 605. A school was established at Dorkena, A. D. 585. At Bagdad were two schools in 832, and two others were in its neighborhood. Schools existed at Terhana, Mahuza, Maraga, and Adiabene, in Assyria, and at Maraga, in Aderbijan.