ten o'clock
`` Thank you , thank you , my dear Hylton . That 's exactly what I wanted to know . _ Au revoir _ . I think we said ten o'clock . '' He marched away briskly . With his white hair gleaming between his little black felt hat cocked at an angle and the collar of his flapping old-fashioned opera-cloak , he looked like some weird bird of the night . I entered the hotel feeling the hot and cold of the man who has said a damnable thing .