"Here," repeated Regina, turning so that Corbario could see exactly where the end of her finger touched her hair.

"To think that so slight an injury may have permanently affected the young man's memory!" Corbario appeared much impressed. "Well," he continued, speaking to Regina, "if we ever find out who he is, his relations owe you a debt of gratitude quite beyond all payment."

"Do you think I want to be paid?" asked Regina, and in her indignation she turned away and walked to the window.

But Marcello called her back.

"Please, Regina—please tell them to go away!" he pleaded.

Corbario nodded to the Superintendent, and they left the room.

"There is certainly a strong resemblance," said Folco, when they were outside, "but it really cannot be my poor Marcello. I was almost too much affected by the thought of seeing him again to control myself when we first entered, but when I came near I felt nothing. It is not he, I am sure. I loved him as if he were my own son; I brought him up; we were always together. It is not possible that I should be mistaken."

"No," replied the Superintendent, "I should hardly think it possible. Besides, from what the girl has told me, I am quite sure that he lay ill near Tivoli. How is it possible that he should have got there, all the way from the Roman shore?"

"And with a fractured skull! It is absurd!" Corbario was glad to find that the Superintendent held such a strong opinion. "It is not Marcello. The nose is not the same, and the expression of the mouth is quite different."

He said these things with conviction, but he was not deceived. He knew that Marcello Consalvi was living and that he had seen him, risen from the dead, and apparently likely to remain among the living for some time. The first awful moment of anxiety was past, it was true, and Folco was able to think more connectedly than he had since he had received the telegram recalling him from Paris; but there was to be another. The doctors said that his memory would return—what would he remember? It would come back, beginning, most probably, at the very moment in which it had been interrupted. For one instant he would fancy that he saw again what he had seen then. What had he seen? That was the question. Had he seen anything but the sand, the scrubby bushes, and the trees round the cottage in the distance? Had he heard anything but the howling of the southwest gale and the thundering of the big surf over the bar and up the beach? The injury was at the back of his head, but it was a little on one side. Had he been in the act of turning? Had he turned far enough to see before the blow had extinguished memory? How far was the sudden going out of thought really instantaneous? What fraction of a second intervened between full life and what was so like death? How long did it take a man to look round quickly? Much less than a second, surely! Without effort or hurry a man could turn his head all the way from left to right, so as to look over each shoulder alternately, while a second pendulum swung once. A second was a much longer time than most people realised. Instruments made for scientific photography could be made to expose the plate not more than one-thousandth of a second. Corbario knew that, and wondered whether a man's eye could receive any impression in so short a time. He shuddered when he thought that it might be possible.