In Gaul. Chapter XX: Conversion Of Constantine.--Part I. Part II. Part III. PartIV. The Motives, Progress, And Effects Of The Conversion Of Constantine.-- Legal Establishment And Constitution Of The Christian Or Catholic Church. Chapter XXI: Persecution Of Heresy, State Of The Church.--Part I. Part II. Part III. Part IV. Part V. Part VI. Part VII. Persecution Of Heresy.--The Schism Of The Donatists.--The Arian Controversy.--Athanasius.--Distracted State Of The Church And Empire Under Constantine And His Sons.--Toleration Of Paganism. Chapter XXII: Julian Declared Emperor.--Part I Part II. Part III. Part IV. Julian Is Declared Emperor By The Legions Of Gaul.--His March And Success.--The Death Of Constantius.--Civil Administration Of Julian. Chapter XXIII: Reign Of Julian.--Part I. Part II. Part III. Part IV. Part V. The Religion Of Julian.--Universal Toleration.--He Attempts To Restore And Reform The Pagan Worship--To Rebuild The Temple Of Jerusalem--His Artful Persecution Of The Christians.--Mutual Zeal And Injustice. Chapter XXIV: The Retreat And Death Of Julian.--Part I. Part II. Part III. Part IV. Part V. Residence Of Julian At Antioch.--His Successful Expedition Against The Persians.--Passage Of The Tigris--The Retreat And Death Of Julian.-- Election Of Jovian.--He Saves The Roman Army By A Disgraceful Treaty. Chapter XXV: Reigns Of Jovian And Valentinian, Division Of The Empire.-- Part I. Part II. Part III. Part IV. Part V. Part VI. Part