His feet echoed on the dirty staircase so he mounted slowly up till he stood in front of his own door.  Slowly, like one making an effort that was almost painful to him he searched for his key and drew it out.  His hand shook as he inserted the key into the keyhole.  He tried to steady his hand, but he could not control its furtive and perpetual movement.  When the door was open he struck a match, and lit a candle that stood on a chair in the dingy and narrow lobby.  Then he turned round wearily to shut the door.  He was possessed by a great fatigue, and wondered whether, if he fell on his bed in the blackness, he would be able to sleep.  As he turned, he saw, lying on the matting at his feet, a square white envelope.  It was lying upside down.  Some one must have pushed it under the door while he was out.

He stood looking at it for a minute.  Then he shut the door, bent down, picked up the envelope, turned it over and held it near the candle flame.  He read his name and the handwriting was Rosamund’s.

After a long pause he took the candle and carried the letter into his sitting-room.  He set the candle down on the table on which lay “The Kasidah” and a few other books, laid the letter beside it, with trembling hands drew up a chair and sat down.

Rosamund had written to him.  When?  Before she had learnt the truth or afterwards?

For a long time he sat there, leaning over the table, staring at the address which her hand had written.  And he saw her hand, so different from Mrs. Clarke’s, and he remembered its touch upon his, absolutely unlike the touch of any other hand ever felt by him.  Something quivered in his flesh.  The agony of the body rushed upon him and mingled with the agony of the soul.  He bent down, laid his hot forehead against the letter, and shut his eyes.

A clock struck presently.  He opened his eyes, lifted his head, took up the envelope, quickly tore it, and unfolded the paper within.

“HOTEL DE BYZANCE, CONSTANTINOPLE, Wednesday evening

“I am here.  I want to see you.  Shall I come to you to-morrow?  I can come at any time, or I can meet you at any place you choose.  Only tell me the hour and how to go if it is difficult.

“ROSAMUND.”

Wednesday evening!  It was now the night of Wednesday.  Then Rosamund had written to him after she had been to Santa Sophia and had met Mrs. Clarke.  She knew, and yet she wrote to him; she asked to see him; she even offered to come to his rooms.  The thing was incomprehensible.

He read the note again.  He pored over every word in it almost like a child.  Then he held it in his hand, sat back in his chair and wondered.