Suddenly he noticed that something white had fluttered to the ground at his feet. He stooped and picked up a small thin sheet of note-paper, folded and sealed like an old-fashioned letter, and bearing the superscription:-- To the Count Ottaviano Celsi. Wyant stared at this mysterious document. Where had it come from? He was distinctly conscious of having seen it fall through the air, close to his feet. He glanced up at the dark ceiling of the chapel; then he turned and looked about the church. There was only one figure in it, that of a man who knelt near the high altar. Suddenly Wyant recalled the question of Doctor Lombard’s maid-servant. Was this the letter she had asked for? Had he been unconsciously carrying it about with him all the afternoon? Who was Count Ottaviano Celsi, and how came Wyant to have been chosen to act as that nobleman’s ambulant letter-box? Wyant laid his hat and stick on the chapel steps and began to explore his pockets, in the irrational hope of finding there some clue to the mystery; but they held nothing which he had not himself put there, and he was reduced to wondering how the letter, supposing some unknown hand to have bestowed it on him, had happened to fall out while he stood motionless before the picture. At this point he was disturbed by a step on the floor of the aisle, and turning, he saw his lustrous-eyed neighbor of the table d’hote. The young man bowed and waved an apologetic hand. “I do not intrude?” he inquired suavely. Without waiting for a reply, he mounted the steps of the chapel, glancing about him with the affable air of an afternoon caller. “I see,” he remarked with a smile, “that you know the hour at which our saint should be visited.” Wyant agreed that the hour was indeed felicitous. The stranger stood beamingly before the picture. “What grace! What poetry!” he murmured, apostrophizing the St. Catherine, but letting his glance slip rapidly about the chapel as he spoke. Wyant, detecting the manoeuvre, murmured a brief assent. “But it is cold here--mortally cold; you do not find it so?” The intruder put on his hat. “It is permitted at this hour--when the church is empty. And you, my dear sir--do you not feel the dampness? You are an artist, are you not? And to artists it is permitted to cover the head when they are engaged in the study of the paintings.” He darted suddenly toward the steps and bent over Wyant’s hat. “Permit me--cover yourself!” he said a moment later, holding out the hat with an ingratiating gesture. A light flashed on Wyant. “Perhaps,” he said, looking straight at the young man, “you will tell me your name. My own is Wyant.” The stranger, surprised, but not disconcerted, drew forth a coroneted card, which he offered with a low bow. On the card was engraved:-- Il Conte Ottaviano Celsi.