306-337. Constantine (in Gaul).

311. First edict of toleration (by Galerius).

312-337. Constantine (in Italy).

312. Second edict of toleration (from Milan).

314. Council of Arles, on the Donatists, &c.

315-337. Constantine (in Illyricum).

Cir. 317. Athanasius de Incarnatione Verbi Dei.

Cir. 318. Outbreak of Arian controversy.

323-337. Constantine (in the East).

325 (June). Council of Nicæa.