Unfamiliar as Tristan was with the factions that usurped the dominion of the Seven Hills, the escutcheons and coats-of-arms of these marauding parties meant little to him. Now and then however it would chance that two rival factions clashed, each disputing the other's passage. Then, only, did he become alive to the dangers that beset the unwary in the city of the Pontiff, and a sudden spirit of recklessness and daring, born of the moment, prompted the desire to plunge into this seething vortex, if but to purchase temporary oblivion and relief. He faced the many dangers of the streets, loitering here and there and curiously eyeing all things, and would eventually have lost himself, when the mantle of night began to fall on the Seven Hills, had he not instinctively remarked that the ascending road removed him from the river. CHAPTER V ON THE AVENTINE When Tristan at last regained his bearings, he found himself among the convents and cloisters on Mount Aventine. His eyes rested wearily on the eddying gleam of the Tiber as it wound its coils round the base of the Mount of Cloisters, thence they roamed among the grass and weed-grown ruins of ancient temples and crumbling porticoes, which rose on all sides in the silent desolation. Just then a last gleam of the disappearing sun touched the bronze figure of the Archangel on the summit of Castel San Angelo, imbuing it for an instant with a weird effect, as though the ghost of some departed watchman were waving a lighted torch aloft in the heavens. Then the glow faded before a dead grey twilight, which settled solemnly over the melancholy landscape. The full moon was rising slowly. Round and large she hung, like a yellow shield, on the dark, dense wall of the heavens. In the distance the faint outlines of the Alban Hills and the snow-capped summit of Monte Soracté were faintly discernible in the night mists. In the background the ill-famed ruins of the ancient temple of Isis rose into the purple dusk. The Tiber, in the light of the higher rising moon, gleamed like a golden ribbon. The gaunt masonry of the Septizonium of Alexander Severus was dimly rimmed with light, and streaks of amber radiance were wandering up and down the shadowy slopes of the Mount of Cloisters, like sorrowing ghosts bound upon some sorrowful errand. All sense of weariness had suddenly left Tristan. A compelling influence, stronger than himself, seemed to urge him on as to the fulfillment of some hidden purpose.