They were conversing in animated fashion, but in low tones; and they ceased talking only when they caught up with the others.
Olivo introduced Casanova and Lorenzi to one another.

They exchanged glances with a cold aloofness that seemed to offer mutual assurances of dislike; then, with a forced smile, both bowed stiffly without offering to shake hands.

Lorenzi was handsome, with a narrow visage and features sharply cut for his age.

At the back of his eyes something difficult to grasp seemed to lurk, something likely to suggest caution to one of experience.

For a moment, Casanova was in doubt as to who it was that Lorenzi reminded him of.