"Caro senatore," observed Don Agostino, tranquilly, "are you aware that it grows late? We can continue our discussion as we return to the city. Signorina," he continued, turning to Giacinta, "you are sitting with your back to the view. Is it not beautiful, with the moonlight falling on those ruins?"

He rose from his chair as he spoke, and motioned to Giacinta to accompany him to the parapet of the terrace.

"Bring your father away," he said to her, in a low voice, "and Silvio. It is as well for us not to be seen together."

"But Baron d'Antin does not know Silvio by sight," returned Giacinta, "and I doubt if he knows either my father or me by sight. Do you know him, monsignore?" she added.

"I have never seen him," said Don Agostino, "and it is not of him I am thinking—but of the other, the young man who is with him. No, do not look round, signorina! At present I think that we are unobserved. It will be more prudent for me to leave you without any further ceremony. We can meet again outside the restaurant."

"But who is he—that other one?" asked Giacinta, quickly.

"A person I would rather not meet," replied Don Agostino—"at least," he added, "I would rather not be seen by him under the present circumstances, signorina. I beg of you to explain to your father that he will find me waiting for him outside," and, turning from her, Don Agostino walked rapidly towards the door, having satisfied himself that the new-comers were occupied with the head-waiter in ordering their dinner, and that he could probably leave the terrace unobserved by them.

XX

On emerging from the restaurant, the Rossanos found Don Agostino awaiting them.

"Giacinta told me I must pay the bill and come away," the professor said to him. "For myself," he added, "I should have preferred to remain another half-hour. That white wine is certainly good. May one ask, monsignore, what made you leave us so suddenly? Did you discover a cardinal of the holy office in disguise?"