I. The death of the Cæsar Gallus is announced to the emperor.—II. Ursicinus, the commander of the cavalry in the East; Julian, the brother of the Cæsar Gallus; and Gorgonius, the high chamberlain, are accused or treason.—III. The adherents and servants of the Cæsar Gallus are punished.—IV. The Allemanni of the district of Lintz are defeated by the Emperor Constantius with great loss—V. Silvanus, a Frank, the commander of the infantry in Gaul, is saluted as emperor at Cologne; and on the twenty-eighth day of his reign is destroyed by stratagem.—VI. The friends and adherents of Silvanus are put to death.—VII. Seditions of the Roman people are repressed by Leontius, the prefect of the city; Liberius, the bishop, is driven from his see.—VIII. Julian, the brother of Gallus, is created Cæsar by the Emperor Constantius, his uncle; and is appointed to command.—IX. On the origin of the Gauls, and from whence they derive the names of Celts and Gauls; and of their treaties.—X. Of the Gallic Alps, and of the various passes over them.—XI. A brief description of Gaul, and of the course of the River Rhone.—XII. Of the manners of the Gauls.—XIII. Of Musonianus, prefect of the Prætorium in the East.