twelve o'clock
Andrea regarded her fixedly with a little trepidation . When she rose , she took up one of her gloves . The other she left in the shadowy corner of the piano -- for him . Three days afterwards , when astonished Rome had awakened to find itself under a covering of snow , Andrea received a note to the following effect -- ' _ Tuesday , 2 p. m. _ -- To-night , between eleven and twelve o'clock , you will wait for me in a carriage in front of the Palazzo Barberini , outside the gates . If by midnight I am not there , you can go away again . -- _ A stranger _ . ' The tone of the note was mysterious and romantic .