And again she would croon those sad melancholy songs that came from her lips like faint echoes of Aeolian harps. Now she flung them upon the air in bursts of weird music, to the accompaniment of a breaking wave, songs so passionate and elemental that they seemed the cry of these same radiant waters when churned by the storm into fury. Or they might have been such wailings as spirits imprisoned in old sea caves would utter to the hollow walls, or which the ghosts of ship-wrecked crews might send forth from the rocks where they had perished. Or again they might suggest some earthly passion, love, jealousy, the cry of a longing heart, till the dirge seemed to wear itself out and the soul of the listener seemed to sail out of the tempest into bright and peaceful waters like those that skirted dream-lost Avalon, scarcely rippled by the faint breeze of summer, breaking in long unfurling waves among the rocks at their feet. Thus they used to sit long hours, heart listening to heart, soul clinging to soul, while she bared her throat to the scent-laden breezes that fanned her and looked out on the dazzling horizon--till a lightning flash from the clear azure splintered the dream and broke two lives. For a long time Tristan gazed about, vainly trying to order his thoughts. Could he but forget! Would but the present engulf the past!-- His adventure at the Church of Santa Maria of the Aventine and his chance meeting with Theodora recurred to him at intervals throughout the day, and he could not but admit that the reports of the woman's beauty were far from exaggerated. Perchance, if the memory of Hellayne had been less firmly rooted in his soul, he, too, might, like many another, have sought solace at the forbidden fount. However, he was resolved to avoid her, for he had seen something in the swift glance she had bestowed upon him that discoursed of matters it behooved him to beware of. And yet he wondered how she had received his denial, she, whom no man had denied before. Then this memory also faded before the exigencies of the hour. The sun had sunk to rest in a sky of turquoise, crimson and gold, when Tristan found himself standing on the eminence where seven decades later Crescentius, the Senator of Rome, was to build the Church of Santa Maria in Ara Coeli. Leaning on a broken pillar, Tristan watched the evening light as it spread a veil of ethereal splendor over the Seven Hills and there came to him a strange feeling of remoteness as to one standing upon some hill-set shrine. Far beneath him lay the Forum. White columns shone roseate in the dying light of day. Wrapt in deep thoughts and meditations, Tristan descended the stairs leading from the summit whence in after time the name of Santa Maria in Ara Coeli--Holy Mother at the Altar of Heaven--was to ring in the ears of thousands like a beautiful rhythmic chant, and after a time he found himself in the Piazza fronting the Lateran. Seized with a sudden impulse he entered the church.