Such a divided form of government would have proved a source of discord between the most affectionate brothers. It was impossible that it could long subsist between two implacable enemies, who neither desired nor could trust a reconciliation. It was visible that one only could reign, and that the other must fall; and each of them, judging of his rival’s designs by his own, guarded his life with the most jealous vigilance from the repeated attacks of poison or the sword. Their rapid journey through Gaul and Italy, during which they never ate at the same table, or slept in the same house, displayed to the provinces the odious spectacle of fraternal discord. On their arrival at Rome, they immediately divided the vast extent of the imperial palace. 18 No communication was allowed between their apartments; the doors and passages were diligently fortified, and guards posted and relieved with the same strictness as in a besieged place. The emperors met only in public, in the presence of their afflicted mother; and each surrounded by a numerous train of armed followers. Even on these occasions of ceremony, the dissimulation of courts could ill disguise the rancor of their hearts. 19 18 (return) [ Mr. Hume is justly surprised at a passage of Herodian, (l. iv. p. 139,) who, on this occasion, represents the Imperial palace as equal in extent to the rest of Rome. The whole region of the Palatine Mount, on which it was built, occupied, at most, a circumference of eleven or twelve thousand feet, (see the Notitia and Victor, in Nardini’s Roma Antica.) But we should recollect that the opulent senators had almost surrounded the city with their extensive gardens and suburb palaces, the greatest part of which had been gradually confiscated by the emperors. If Geta resided in the gardens that bore his name on the Janiculum, and if Caracalla inhabited the gardens of Mæcenas on the Esquiline, the rival brothers were separated from each other by the distance of several miles; and yet the intermediate space was filled by the Imperial gardens of Sallust, of Lucullus, of Agrippa, of Domitian, of Caius, &c., all skirting round the city, and all connected with each other, and with the palace, by bridges thrown over the Tiber and the streets. But this explanation of Herodian would require, though it ill deserves, a particular dissertation, illustrated by a map of ancient Rome. (Hume, Essay on Populousness of Ancient Nations.—M.)] 19 (return) [ Herodian, l. iv. p. 139]