"You did that very neatly," Flower said in his ungracious way. "I suppose there are no tendons cut or anything of that kind? One hears of lockjaw following cut fingers. I suppose there's no risk of that?"
"For a strong man my uncle is terribly afraid of illness," Beatrice smiled. "I see he owes me a grudge for being the cause of his accident. And yet, indeed, I am certain that a man attempted to enter into the conservatory. Fortunately for me, I am in a position to prove it. You won't accuse me of imagining that there is a piece of string lying on the floor by the door. I will pick it up and convince you."
Beatrice raised the cord in her hand. It was about a foot in length, exceedingly fine and silky in texture, and containing at intervals five strangely complicated knots of most intricate pattern. With a smile of triumph on her face Beatrice handed the fragment to her uncle.
Flower made no reply. He held the string in his hand, gazing at it with eyes dark and dilated.
"Great heavens!" he exclaimed. The words seemed to be literally torn from him. "Is it possible----"
Beatrice and Wilfrid looked at Flower in astonishment. He did not seem to heed until his dull eyes met theirs and saw the question which neither cared to ask.
"A sharp, sudden pain," he gasped, "a pain in my head. I expect I have been working too hard. It has gone now. Perhaps it isn't worth taking any notice of. I am told that neuralgia sometimes is almost more than one can bear. So this is the piece of string the fellow was using, Beatrice? I am afraid I can't disbelieve you any longer. I am sure that there is no string like this in the house. In fact, I never saw anything like it before. What do you make of it, Dr. Mercer?"
Flower was speaking hurriedly. He had assumed an amiability foreign to his nature. He spoke like a man trying to undo a bad impression.
"It is curious, but I have seen something similar," Mercer said. "It was a piece of silken string of the same length, knotted exactly like this, and the incident happened in the Malay Archipelago. The ship on which I was doctor----"
"Oh, you've been a ship's doctor," Flower said swiftly.
Mercer bit his lip with vexation. The slip was an awkward one, but after that exclamation Flower showed no disposition to carry the query farther, and Wilfrid began to breathe more freely. He went on composedly enough.